To see the other types of publications on this topic, follow the link: Pingo plants.
Journal articles on the topic 'Pingo plants'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Pingo plants.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Silva, Rogério Alexandrino da, Paulo César Ferreira Linhares, Anielson dos Santos Souza, Maria Francisca Soares Pereira, Janilson Pinheiro de Assis, Roberto Pequeno de Sousa, Ariana Morais Neves, Lunara de Sousa Alves, and Rita Ianáskara Gomes da Silva. "Yield of ‘Pingo de Ouro’ Cowpea Bean Under Different Sowing Densities and Goat Manure Doses in the Region of Mossoró, Brazil." Journal of Agricultural Science 10, no. 12 (November 15, 2018): 329. http://dx.doi.org/10.5539/jas.v10n12p329.
Full textAbstract:
Using goat manure may substantially increase cowpea bean productivity. This study evaluated the yield of ‘pingo de ouro’ cowpea bean under different sowing densities and goat doses in the region of Mossoró, Brazil. The experiment was conducted from October to December 2016 at the Experimental Farm Rafael Fernandes, Mossoró-RN, Brazil. Treatments arranged in two-way factorial with four goat manure doses (0.0, 0.5, 1 and 2 kg m-1), and two sowing densities of bean (75,000 and 37,500 plants ha-1), with three replicates. The experiment was performed in complete randomized blocks design. We evaluated the number and length of pods per plant, number of seed per pod, weight of 100 dry grains and dry grain yield. Higher grain yield occurred using 2.0 kg m-1 of goat manure (1,162.4 kg ha-1 or 234 kg 2,000 m-2) and 75,000 plants ha-1 (693.4 kg ha-1 or 138.6 kg 2,000 m-2). High sowing density in combination with goat manure is an affective.
2
RODRIGUES, ERINA VITÓRIO, KAESEL JACKSON DAMASCENO-SILVA, MAURISRAEL DE MOURA ROCHA, EDSON ALVES BASTOS, and ADRIANO DOS SANTOS. "TOLERANCE OF F 2 POPULATIONS OF COWPEA TO WATER DEFICIT." Revista Caatinga 31, no. 1 (March 2018): 48–55. http://dx.doi.org/10.1590/1983-21252018v31n106rc.
Full textAbstract:
ABSTRACT Water deficit affects plant development and the overcoming of its effects depends on the genotype, duration of stress, severity of damage and development stage of the plant at water stress. Cowpea is considered tolerant to water deficit, however, studies have shown that its yield can be reduced under this condition. Thus, the objective of this work was to evaluate the effect of water deficit on F2 populations of cowpea and select tolerant genotypes. Thirty F2 populations of cowpea and their parents (BRS-Paraguaçu, Pingo-de-Ouro-1-2, BRS-Xiquexique, CNCx-698-128G, Santo-Inácio and MNC99-510F-16-1) were evaluated in two experiments, one under induced water deficit and other under full irrigation, in the experimental field of the Embrapa Mid-North, in Teresina, State of Piauí, Brazil. A triple lattice incomplete block experiment design was used, with three replications. The experimental plots consisted of six 2-m rows, with spacing of 1.0 m between rows and 0.50 m between plants. The grain production was evaluated and its decrease related to the relative production and tolerance to stress was calculated. The grain production of the genotypes had an average decrease of 29.83% under water deficit. The genotypes from the crosses BRS-Paraguaçu x CNCx-698-128G, BRS-Xiquexique x Pingo-de-Ouro-1-2, CNCx-698-128G x BRS-Xiquexique, CNCx-698-128G x MNC99-510F-16-1, Santo-Inácio x BRS-Xiquexique and MNC99-510F-16-1 x BRS-Paraguaçu had high production and high tolerance to water deficit.
3
RODRIGUES, ERINA VITÓRIO, KAESEL JACKSON DAMASCENO-SILVA, MAURISRAEL DE MOURA ROCHA, EDSON ALVES BASTOS, and ADRIANO DOS SANTOS. "DIALLEL ANALYSIS OF TOLERANCE TO DROUGHT IN COWPEA GENOTYPES." Revista Caatinga 31, no. 1 (March 2018): 40–47. http://dx.doi.org/10.1590/1983-21252018v31n105rc.
Full textAbstract:
ABSTRACT The low use of technologies by farmers and the occurrence of biotic and abiotic stresses are limiting factors for cowpea production in the Brazilian Northeast region. The tolerance of genotypes to drought is an alternative to decrease the negative effects of stresses on cowpea production. Thus, the objective of this work was to identify parents and combinations of cowpea genotypes with high probability of generating segregating populations with tolerance to drought. Six cowpea genotypes were crossed in a complete diallel cross design, totaling 30 F2 populations, which were evaluated together with their parents in an experiment under water deficit at the experimental field of the Embrapa Mid-North, Teresina, State of Piauí, Brazil. A triple lattice incomplete block experiment design was used, with three replications, with experimental plot consisting of six 2-m plant rows. Fifteen plants per plot were sampled to evaluate their agronomic characteristics, whose results were subjected to analysis of variance and means were used to estimate the general and specific combining abilities. The genotypes showed significant differences in all characteristics evaluated, denoting the genetic variability of the population. The additive effects were more important than the non-additive effects, and maternal inheritance was detected. The genotypes BRS Xiquexique, Pingo-de-Ouro-1-2 and MNC99-510F-16-1 were the most promising for use in recurrent selection programs for tolerance to water deficit. The hybrid combinations (1) BRS Paraguaçu X (4) CNCx-698-128G, (2) Pingo-de-Ouro-1-2 X (3) BRS Xiquexique, (3) BRS Xiquexique X (5) Santo-Inácio, (4) CNCx-698-128G X (6) MNC99-510F-16-1 and (5) Santo-Inácio X (4) CNCx-698-128G showed potential for generating superior lineages regarding bean production and tolerance to water deficit.
4
Ecker, Scheila Lúcia, Adriana Lugaresi, Gian Carlos Girardi, Bachelor Louis, Leandro Galon, and Clevison Luiz Giacobbo. "Conduction systems in fig tree with two cultivars, evaluating fruits quality and yield." Scientia Agraria Paranaensis 1, no. 1 (May 1, 2020): 77. http://dx.doi.org/10.18188/sap.v19i1.23054.
Full textAbstract:
The fig tree is rustic and one of the fruit species with great economic importance, because it adapts easily to different climate and soil types. The objective of this study was to evaluate the influence the branches number and the fig tree cultivar on yield and fruit quality. The orchard implanted with two cultivars, Roxo de Valinhos and Pingo de Mel, and conducted with different numbers of productive branches, being: 16, 24 and 32. The utilized lineation was completely randomized, with three replicates, each replicate being composed of four plants. The analyzed variables were: branches length (cm), number of fruits per plant, number of fruits per branch meter, yield of mature fruits (Kg ha-1), yield of green fruits (Kg ha-1), accumulated productivity (Kg ha-1), fruit size (cm3), average fruit weight (g), soluble solids (°Brix) and fruit dry matter (%). The daily elongation rate and the mean length of the branches did not influence the different treatments. For productivity, noticed superiority on cultivar Roxo de Valinhos, with the higher the number of productive branches in the plants. Fruit quality, relative to soluble solids and dry matter, also did not influence the treatments. Fruits in larger caliber and size found from plants of the cultivar Roxo de Valinhos. Both for the production of fruits for fresh consumption and for the industrialization it is recommended the conduction with greater number of productive branches being between 24 and 32, for the greater productive yield.
5
Zorto Aguilera, Fernando, and Wilson Licona Martínez. "Análisis comparativo del costo del kWh de plantas de potencia utilizando como combustible biomasa de los pinos afectados por el Dendroctonus Frontalis en Honduras." Revista Ciencia y Tecnología, no. 23 (November 30, 2018): 113–28. http://dx.doi.org/10.5377/rct.v0i23.6864.
Full textAbstract:
En Honduras en el 2106 se presentó un problema de aprovechamiento de madera de pino afectada por el Dendroctunus Frontalis, el cual afectó a 389.024.38 ha de pino. Por tal motivo es necesario una solución viable a dicho problema, por lo cual se propone el estudio de ubicación de dos escenarios para el manejo de la biomasa. En el Escenario 1 se desea instalar una planta con capacidad de 50MW y para el Escenario 2 se instala zonificado dos plantas de potencia una de 35 MW y otra de 25 MW para verificar, cuál de las dos soluciones genera un costo unitario de Kilowatio-hora más bajo. En este caso, se evaluaron cuatro tipos de tecnologías de plantas de potencia para recudir al máximo el flujo de combustible en cada escenario. En este caso el Escenario 2 nos presenta los mejores valores de costo unitarios de kilowatio-hora siendo estos en la planta de potencia CR3REG2REC para la número 1 con capacidad de 35 MW netos y en la planta de potencia CR3REG2REC número 2 con capacidad de 25 MW netos en US$ 0.0543/kWh y 0.0799 US$/kWH respectivamente.
6
Agricolas, Ciencias. "Contenido de osmoprotectores, ácido ascórbico y ascorbato peroxidasa en hojas de frijol sometidas a estrés por sequía." Revista Mexicana de Ciencias Agrícolas 5, no. 5 (February 15, 2018): 859. http://dx.doi.org/10.29312/remexca.v5i5.907.
Full textAbstract:
La acumulación de osmoprotectores en plantas que se encuentran en condiciones de estrés por sequía, le permiten contrarrestar el efecto negativo que le provoca dichas condición ambiental. En el presente trabajo se estudió la respuesta bioquímica de plantas de frijol con base en la acumulación de carbohidratos solubles, almidón, ácido ascórbico, así como la actividad de la enzima ascorbato peroxidasa, en las hojas simples y en las dos primeras hojas trifolioladas de la variedad resistente, Pinto Villa, y la susceptible a sequía Bayo Madero, ambas de raza Durango. Las plantas de ambas variedades se sometieron a tres tratamientos de humedad, riego, sequía y riego de recuperación. Con respecto a Bayo Madero, Pinto Villa mostró una mayor respuesta de tolerancia al estrés de humedad relacionada con: altas concentraciones de prolina, de ácido ascórbico y mayor actividad de la enzima ascorbato peroxidasa, ésta última en el tratamiento de sequía. En relación a la cantidad de carbohidratos solubles, Bayo Madero fue estadísticamente superior (p< 0.05) a Pinto Villa, lo cual puede indicar que estos compuestos están siendo utilizados por la planta para sintetizar otros compuestos osmoprotectores como la prolina y que pueden considerarse como indicadores importantes para clasificar especies vegetales que sobrevivan y cumplan su ciclo biológico bajo condiciones de estrés de humedad.
7
Lopes, Guilherme E. Machado, Henrique Duarte Vieira, Janie Mendes Jasmim, Aldo Shimoya, and Cláudio Roberto Marciano. "Casca do fruto da mamoneira como substrato para as plantas." Revista Ceres 58, no. 3 (June 2011): 350–58. http://dx.doi.org/10.1590/s0034-737x2011000300016.
Full textAbstract:
A casca do fruto da mamoneira (CFM) é um resíduo gerado, em grande quantidade, no beneficiamento da mamona. O objetivo desta pesquisa foi avaliar as características físicas e químicas da CFM e seu efeito, como substrato, para plantas. A avaliação das características da CFM foi realizada em um experimento fatorial (2x3), constituído da combinação de dois tipos de casca (CFM in natura e compostada) e três granulometrias (peneiras 3, 5 e 10 mm de malha), em delineamento de blocos ao acaso. Os teores de macro e micronutrientes, condutividade elétrica (CE), pH, densidade seca (DS), densidade úmida (DU), porosidade total (PT) e espaço de aeração (EA) foram avaliados. A avaliação da CFM como substrato para plantas foi realizada, utilizando-se mudas de tomateiro (Lycopersicon esculentum Mill.) e estacas de pingo-de-ouro (Duranta repens L.) como espécies indicadoras. Para o cultivo de mudas de tomateiro, a CFM, na granulometria de 3 mm, in natura, ou compostada, foi misturada com Plantmax® em cinco proporções [0:100; 25:75; 50:50; 75:25; 100:0 (v/v)]. Para o enraizamentode pingo-de-ouro, estacas foram plantadas em CFM, in natura, ou compostada, de três granulometrias (3, 5 e 10 mm). A CFM compostada, na granulometria de 3 mm, apresentou as características físicas mais adequadas. A CFM in natura apresentou efeitos negativos, sendo inadequada como substrato. A CFM compostada permitiu obter 100% de germinação e mudas normais de tomateiro, bem como estacas enraizadas de pingo- de- ouro, podendo, portanto, ser utilizada como substrato, pura, ou em misturas.
8
SILVA, LEANDRO CARVALHO DA, DANIEL RODRIGUES NERE, ERVINO BLEICHER, ANTÕNIO VINICIUS CORREA BARBOSA, and ERALDO JOSÉ MADUREIRA TAVARES. "DEMOGRAPHIC PARAMETERS OF BLACK APHID IN COWPEA CULTIVARS." Revista Ciência Agrícola 16, no. 1 (May 23, 2018): 69. http://dx.doi.org/10.28998/rca.v16i1.3782.
Full textAbstract:
Pode-se dizer que a sobrevivência e o desenvolvimento de Aphis craccivora Koch (Hemiptera: Aphididae) é afetado pelo tipo de planta hospedeira. Objetivou-se estimar os parâmetros demográficos do pulgão-preto (Aphis craccivora Koch) em cultivares de feijão-caupi (Vigna unguiculata (L.) Walp.) recomendadas para a colheita mecanizada no Brasil. Foram usadas as cultivares: BRS Pingo de Ouro, BRS Tumucumaque, BRS Itaim, BRS Nova Era, BRS Imponente e BRS Guariba. A cultivar VITA 7 fez parte do estudo na qualidade de padrão de susceptibilidade ao inseto. Foi formado uma coorte, onde cada cultivar teve 10 plantas como réplicas, e cada réplica recebeu um pulgão. Foram registrados diariamente o número de indivíduos vivos, o número de descendentes, os quais em seguida eram retirados e a longevidade dos insetos da coorte. A razão finita de crescimento (λ) do pulgão-preto nas cultivares BRS Nova Era, BRS Imponente, BRS Tumucumaque, VITA 7, BRS Itaim, BRS Pingo de Ouro e BRS Guariba foi, respectivamente, de 1,77, 1,74, 1,73, 1,73, 1,73, 1,71 e 1,16. Os dados sugerem que a cultivar BRS Guariba apresenta resistência do tipo antibiose frente ao pulgão-preto, e que possivelmente sua população não deve estar sujeita a surtos.
9
Laya, Willie Samodra, Moehansyah Moehansyah, and Jamzuri Hadie. "PERTUMBUHAN KACANG HIAS (Arachis pintoi) PADA MEDIA TANAH PASCA PENAMBANGAN BATUBARA YANG DIPERKAYA MIKORIZA, KAPUR DAN PUPUK NPK." EnviroScienteae 12, no. 2 (September 16, 2016): 120. http://dx.doi.org/10.20527/es.v12i2.1690.
Full textAbstract:
This study aimed to determine the effects of the provision of arbuscular mycorrhizal fungi (AMF), the provision of lime, and the provision of NPK fertilizer, and the interaction effect of the provision of Arbuscular mycorrhizal fungi (AMF), lime and NPK fertilizers in promoting the growth of pinto peanut in the soil media of post-mining land. The research method used was a completely randomized design (CRD) three-factor factorial with the first factor is the type of inoculant FMA (M) = 3 levels, the second factor is the provision of lime (K) = 3 levels, and the third factor is the NPK fertilizer (P) = 3 levels. These results indicated that the interaction between AMF Glomus sp. and NPK fertilizer dose of 1 gram/polybag can increase height increase pinto peanut plants for 34.16 % of the controls. The interaction between AMF Gigaspora sp. The lime dose of 50 % Al-dd and Fertilizers NPK dose of 1 gram/polybag can increase the growth of leaves pinto peanut plants at 108.33 % of the controls. The interaction between AMF Glomus sp. and NPK fertilizer dose of 2 grams/polybag can increase canopy and root biomass pinto peanut plants at 245.21 % of the controls. The interaction between AMF Glomus sp. and NPK fertilizer dose of 2 grams/polybag can increase canopy and root biomass pinto peanut plants at 245.21 % of the controls. Level relative mycorrhizal dependency (RMD) was influenced by the type of AMF plant inoculated host. Highest RMD shown in pinto peanut using AMF Glomus sp. is 31.99% at moderately dependent.
10
Zaldaño Hernández, Oscar Roberto. "Impacto ambiental de las aguas residuales de la Planta El Pino Programa Moscamed, sobre las comunidades de influencia en El Cerinal, Barberena, Santa Rosa." Revista Naturaleza, Sociedad y Ambiente 5, no. 1 (November 30, 2018): 11–23. http://dx.doi.org/10.37533/cunsurori.v5i1.27.
Full textAbstract:
La mosca del Mediterráneo, Ceratitis capitata (Wied.), Díptera: Tephritidae, es una de las plagas agrícolas de mayor impactoa nivel mundial. Ataca los frutos de unas 400 especies de plantas de importancia agrícola. En los países donde está presente, como Guatemala, limita la producción y exportación hortofrutícola. La Planta El Pino, es la unidad de producción del Programa Moscamed Guatemala, cuyo propósito es mantener el estatus de las zonas internacionalmente reconocidas como libres de plaga, en Estados Unidos, México, Belice y Guatemala. En este estudio se documenta el proceso de tratamiento de aguas servidas en la Planta El Pino y se evalúa su impacto ambiental, según el acuerdo 236-2006 del Ministerio del Ambiente yRecursos Naturales. Los resultados obtenidos se comparan con los de dos comunidades cercanas e independientes. Se incluyen los resultados del estudio técnico sobre la calidad de aguas servidas, realizado en el 2017 y una encuesta para medir la percepción sobre el impacto social y ambiental de la organización en las comunidades de influencia.
11
Ergun, Muharrem, E. T. Paparozzi, D. Nuland, D. P. Coyne, and D. Smith. "Factors Affecting Seed Coat Yellowing of Pinto Beans." HortScience 33, no. 3 (June 1998): 458c—458. http://dx.doi.org/10.21273/hortsci.33.3.458c.
Full textAbstract:
The pinto bean breeding line 94-4 (Phaseolus vulgaris L.) showed seed coat yellowing in on-farm field trials in Nebraska in 1996. After reviewing weather data, sprinkler irrigation appeared to be one of the cultural factors involved with increase in seed coat yellowing. Cultural conditions were again investigated in 1997 in on-farm trials. In one test half of the NE 94-4 plants were cut and combined promptly while the other half of the cut plants were left on the ground, rained upon, and combined later. Seed from the pods of former and latter treatments were compared for degree of seed coat yellowing. Yellowing was recorded visually by determining percentage of the yellow area on a bean seed. The seed from the pods of the cut wetted plants showed more discoloration than seed from the plants that were not rained on. In another experiment two or four samples (40 g each) were taken from each of seven cultivars as well as NE 94-4 to determine degree of yellow discoloration of seed. The percent seed coat yellowing of the varieties/line was as follows: `Apache' 12.5%, `Bill Z' 14.9%, `Buckskin' 20.7%, `Chase' 9.2%, `NE-94-4' 54.1%, `179' 48%, `Vision' 35.5%, `Winchester' 10%. Results of pigment extraction and simulated irrigation experiments will be presented in order to better explain the cause of pinto seed coat yellowing.
12
Madrid-Aispuro, Rosa E., José Á. Prieto-Ruíz, Arnulfo Aldrete, José C. Hernández-Díaz, Christian Wehenkel, and Jorge A. Chávez-Simenta. "CRECIMIENTO DE Pinus cembroides ZUCC. EN VIVERO EN DIVERSOS SUSTRATOS Y FERTILIZANTES." Agrociencia 54, no. 4 (December 29, 2020): 539–54. http://dx.doi.org/10.47163/agrociencia.v54i4.2051.
Full textAbstract:
Los sustratos a base de aserrín crudo de pino y corteza compostada de pino, con fertilizantes de liberación controlada, son una alternativa para producir planta forestal en vivero. El objetivo de este estudio fue evaluar el efecto del sustrato, fertilizante de liberación controlada (FLC) y fertilizante hidrosoluble (FH) en el crecimiento de Pinus cembroides Zucc. en vivero. Las mezclas evaluadas fueron corteza compostada de pino (P. douglasiana Martínez), aserrín crudo de pino (P. engelmannii Carr., P. cooperi Blanco y P. durangensis Martínez) y turba de musgo (Sphagnum sp.): M1 (60:0:40), M2 (35:30:35), M3 (25:50:25), M4 (15:70:15), con tres esquemas de fertilización basados en combinaciones seleccionadas de las dosis 0, 4 y 8 kg m–3 de FLC (Multicote®), y 0.0, 0.5 y 1.0 g L–1 de FH (Triple 19® de N, P y K). El diseño experimental fue completamente al azar con arreglo factorial 4 x 3. Las variables evaluadas fueron: altura, diámetro, biomasa total, índice de calidad de Dickson, volumen radical (VR) y concentración de N, P y K en el follaje. La mezcla de sustratos y el esquema de fertilización afectaron significativamente (p≤0.0001) las variables estudiadas. Las plantas con altura y biomasa total mayores, fueron las del tratamiento con 4 kg m–3 de FLC más 0.5 g L–1 de FH. El diámetro y los VR mayores se obtuvieron con 8 kg m–3 de Multicote®. Los valores inferiores, en la mayoría de las variables, ocurrieron cuando se aplicó sólo aserrín crudo de pino y en mezclas con mayor proporción de aserrín. En los tratamientos que contuvieron FLC y FH se obtuvieron plantas con atributos morfológicos mayores, independientemente del sustrato.
13
Casaroti, Bruna Guerreiro, Gustavo Alves Pereira, and Luiz De Souza Corrêa. "EFEITO DE DIFERENTES PORTA-ENXERTOS SOBRE O DESENVOLVIMENTO E PRODUÇÃO DE FIGO VERDE, PELA VARIEDADE ROXO DE VALINHOS." Cultura Agronômica: Revista de Ciências Agronômicas 24, no. 2 (April 1, 2015): 225–33. http://dx.doi.org/10.32929/2446-8355.2015v24n2p225-233.
Full textAbstract:
A figueira (Ficus carica), uma planta da família Moraceae, é umas das frutíferas mais antigas do mundo. Seu principal método de propagação é a estaquia, sendo que essa apresenta algumas falhas. O objetivo do presente trabalho foi avaliar o efeito de diferentes porta-enxertos sobre o desenvolvimento bem como produção da figueira variedade Roxo de Valinhos. O trabalho foi realizado na Fazenda de Ensino e Pesquisa da Faculdade de Engenharia – UNESP, campus Ilha Solteira, localizada no município de Selvíria, MS, no período de 03 de abril de 2009 a 27 de março de 2010. Foram avaliados 10 diferentes porta-enxertos (Calimyrna, Genovesco, Roxo de Valinhos, Celeste, Bonato, White Genova, Pingo de Mel IAC, Pingo de Mel, Caprifigo e Troyano). Avaliou-se o número de frutos colhidos por planta e época de colheita, comprimento médio e massa seca dos ramos ao final da colheita. O porta-enxerto que apresentou os melhores resultados para os parâmetros analisados foi o Bonato.
14
Hosseinpur, A. R., H. R. Motaghian, and M. H. Salehi. " Potassium release kinetics and its correlation with pinto bean (Phaseolus vulgaris) plant indices." Plant, Soil and Environment 58, No. 7 (July 23, 2012): 328–33. http://dx.doi.org/10.17221/70/2012-pse.
Full textAbstract:
The rate of potassium (K) release from soils is a dynamic process, and it is important to the evaluation of soil K availability to plant. The objectives of this study were to determine K release characteristics and the correlation of these parameters with bean plant indices in surface soils of 15 calcareous soils. The kinetics of K release was determined by successive extraction with 0.01 mol/L CaCl<sub>2</sub> in a period of 2–2017 h at 25 ± 1°C. The results showed that the cumulative K‏ release ranged from 111 to 411 mg/kg. A plot of cumulative amount of K released showed a discontinuity in slope at 168 h. Thus, two equations were applied to segments of the total reaction time (2 to 168 and 168 to 2017 h). The amounts of K released during 2–168 and 168–2017 h ranged from 55 to 299 and 44 to 119 mg/kg, respectively. Release kinetics of K conformed fairly well to parabolic diffusion, simplified Elovich and power function models in two segments. Potassium released after 2–168 and 168–2017 h and K release rate constants were significantly correlated (P < 0.05) with bean plant indices, while correlation between K extracted by using 1 mol/L NH<sub>4</sub>OAc (ammonium acetate) and plant indices was not significant. The results of this research showed that information obtained from K release studies in laboratory and kinetics equation parameters can help to estimate the K supplying power of soils.
15
PINTO, IRAJÁ DAMIANI. "Permian Insects from Paraná Basin, South Brazil, IV Coleoptera." Pesquisas em Geociências 19, no. 19 (June 30, 1987): 5. http://dx.doi.org/10.22456/1807-9806.21678.
Full textAbstract:
São descritos dois Coleopteros (Insecta) do Permiano: Kaltanicupes ponomarenkoi Pinto, sp. nov. e Protocupoides rohdendorfi Pinto, sp. nov. da família Permocupedidae. Eles foram encontrado na Formação Irati, associados a outros insetos, crustáceos, escamas de peixes e plantas no Estado do Rio Grande do Sul, sul do Brasil.
16
Felix, Joel. "Response of Dry Bulb Onion, Sugar Beet, and Pinto Beans to Imazosulfuron Soil Residues." Weed Technology 25, no. 4 (December 2011): 586–90. http://dx.doi.org/10.1614/wt-d-11-00007.1.
Full textAbstract:
Field studies were conducted in 2010 in Ontario, OR, to evaluate the response of direct-seeded dry bulb onion, sugar beet, and pinto beans to imazosulfuron soil residues 12 mo after application to control weeds in potato. The studies were organized as randomized complete block designs with three replications each. Imazosulfuron was applied alone PRE at 224 and 450 g ai ha−1, sequentially at 224 g ha−1PRE and POST, or in tank mixture withS-metolachlor 1,060 g ha−1. Very few onion plants emerged in plots previously treated with imazosulfuron at 224 g ha−1, regardless of timing. Emerged onion plants were severely injured and never matured. No onions emerged from residues of imazosulfuron applied at 450 g ha−1. A few sugar beet plants emerged from 224 g ha−1but were severely stunted and never grew beyond the first set of leaves. There was no sugar beet emergence from imazosulfuron sequential applications, regardless of the rate and application timing. However, imazosulfuron residues did not affect pinto beans, which emerged and produced marketable yield, similar to grower standard and nontreated plots. The results suggest sensitivity of direct-seeded dry bulb onion and sugar beet, but not pinto beans, to imazosulfuron residues 12 mo after application.
17
Jiménez Galindo, José Cruz, and Jorge Alberto Acosta Gallegos. "Efecto de la densidad de cosecha en rendimiento de frijol Pinto Saltillo de riego en Chihuahua, México." Revista Mexicana de Ciencias Agrícolas 4, no. 2 (May 18, 2018): 243–57. http://dx.doi.org/10.29312/remexca.v4i2.1235.
Full textAbstract:
Se describen estudios sobre el uso de las altas densidades en frijol de riego en el estado de Chihuahua. La mayoría de los productores de frijol de riego cosechan una densidad por debajo de las recomendaciones de INIFAP. Los objetivos de los estudios aquí reportados fueron: a) realizar un muestreo aleatorio en parcelas comerciales de productores de frijol de riego en Chihuahua para determinar la población de plantas en uso; y b) evaluar el rendimiento de grano de la variedad Pinto Saltillo de riego con diferentes densidades, localidades y años. El muestreo de densidad en parcelas de productores de frijol de riego se realizó en 2009. Los experimentos para determinar el uso de altas densidades o densidades óptimas se realizaron en 2010 en Fco. I. Madero, Bachiniva y en 2011 en Carbajal de Abajo, Cusihuiriachi e Independencia, Namiquipa. En cada localidad se utilizó el sistema de riego disponible por el productor pivote central, en las dos primeras localidades y sistema de aspersión manual en la tercera localidad. La fertilización y el manejo vario de acuerdo al productor. Las densidades utilizadas variaron desde 1 hasta 16 plantas por metro lineal (planta por m-1). La densidad promedio recomendada para frijol de riego en las tres localidades fue la de 8 planta por m-1 (100 000 plantas por hectárea en la cosecha). Al determinar un promedio de rendimiento de grano en las tres localidades estudiadas resultó un incremento de 1 966.2 a 2 305.7 kg ha-1, de esta forma sembrando la densidad óptima se podría incrementar el rendimiento de frijol de riego como lo prevé el Gobierno Federal de aumentar el promedio nacional del frijol de riego de 1 700 kg ha-1 a un rango de 2 000 a 2 500 kg ha-1.
18
Zaiter, Haytham Z., Dermot P. Coyne, and James R. Steadman. "Rust Reaction and Pubescence in Alubia Beans." HortScience 25, no. 6 (June 1990): 664–65. http://dx.doi.org/10.21273/hortsci.25.6.664.
Full textAbstract:
Sixteen Alubia lines (15 with long, straight hairs and one with short, hooked hairs on trifoliolate leaves) derived from single-plant selections made in an Alubia landrace (Argentine) were used to evaluate the relation of abaxial leaf pubescence to reaction to rust in a greenhouse experiment. The pinto cultivar UI-114 (short, hooked hairs) was used as a susceptible check. One plant per pot, replicated six times, in a randomized complete-block design was used. The primary leaves and the sixth trifoliolates of all plants from 12- and 50-day-old plants, respectively, were inoculated with a water suspension of urediniospores (105 cells/ml) of rust isolate US-NP85-10-1. Pustule size and rust intensity were assessed 14 days later. No rust pustules were observed on the sixth trifoliolate leaves of the pubescent (long, straight hairs) Alubia lines, but large pustules were observed on the primary leaves (short, hooked hairs) of all Alubia lines and pinto `UI-114'. as well as on the sixth trifoliolate leaf of A-07-2 and pinto `UI-144' (the latter two with short, hooked hairs).
19
Ergun, Muharrem, Ellen T. Paparozzi, Dermot P. Coyne, Durward Smith, Stephen Kachman, and David S. Nuland. "Testing the Effects of Moisture on Seedcoat Color of Pinto Dry Beans." HortScience 36, no. 2 (April 2001): 302–4. http://dx.doi.org/10.21273/hortsci.36.2.302.
Full textAbstract:
Seedcoat color is an important trait, as it affects marketing and consumer acceptance of pinto beans (Phaseolus vulgaris L.). Pinto breeding line NE 94-4 showed seedcoat yellowing in on-farm field trials in Nebraska in 1996 and 1997. Hail, sprinkler irrigation, and fall rainfall appeared to be involved in increasing seedcoat yellowing, based on analysis of field and weather data of on-farm trial sites. The objective of this study was to determine the effect of moisture on seedcoat yellowing of pinto line NE 94-4 (susceptible) and pinto `UI-114' (highly resistant). Two greenhouse experiments were conducted involving misting of bean plants near maturity and injecting water into maturing bean pods. Another experiment evaluated the response of seeds of these two bean entries to moisture by placing them on moist filter paper in petri dishes in the laboratory. Results showed that both genotype and moisture content are involved in seedcoat yellowing. This simple, cheap, and effective filter paper test was then used to evaluate seedcoat yellowing of nine pinto genotypes in response to moisture. Pinto NE 94-4 and `Kodiak' showed the greatest change, while `Bill Z' showed the least change, in seedcoat color.
20
Márquez Martínez, Jonathan, María Cristina Guadalupe López Peralta, Eleodoro Hernández Meneses, and Nicacio Cruz Huerta. "REGENERACIÓN in vitro DE PLANTAS DE Tillandsia viridiflora (Beer) Baker POR ORGANOGÉNESIS DIRECTA." Agrociencia 54, no. 6 (November 11, 2020): 763–78. http://dx.doi.org/10.47163/agrociencia.v54i6.2180.
Full textAbstract:
Tillandsia viridiflora (Beer) Baker es una bromelia epífita endémica de México y la destrucción de su hábitat y comercio ilegal han propiciado su inserción como especie amenazada en la NOM-059-SEMARNAT-2010. Para su aprovechamiento comercial como planta ornamental se requiere un sistema de propagación masiva. Las técnicas de cultivo de tejidos vegetales in vitro son una opción para producir gran cantidad de plantas. Los objetivos de este estudio fueron determinar las condiciones óptimas para regenerar plantas in vitro por organogénesis directa y aclimatarlas. La organogénesis se evaluó en medio Murashige-Skoog (MS) con 6-bencilaminopurina (BAP, 0.0 y 8.8 µM) y ácido naftalenacético (ANA, 0.0 y 2.1 µM) a partir de plántulas in vitro germinadas en medio MS con 50% de la concentración de sales. Grupos de brotes se colocaron en medio MS con ácido giberélico (AG3, 0 y 5.77 µM) para promover el alargamiento. El enraizamiento de brotes se evaluó en medio MS con 50% de la concentración de sales adicionado con ANA (0.00 y 2.15 µM) y ácido indol-3-butírico (AIB) (0.00 y 2.15 µM). En la aclimatación se evaluaron dos alturas de planta y dos tipos de sustrato: turba+perlita (1:1) y corteza de pino (Pinus). El estudio se estableció en un diseño completamente al azar y los datos obtenidos se analizaron con ANDEVA; para la comparación de medias se usó la prueba de Tukey. La germinación fue 82% a las cinco semanas. En la organogénesis se indujeron 10.4 brotes por explante con 6.65 µM de BAP y 0.5 µM de ANA y en la multiplicación se obtuvieron 13 brotes con 4.4 µM de BAP y 0.5 µM de ANA, ambos casos en 12 semanas. El alargamiento mayor (1.5 cm) de los brotes se indujo con 5.7 µM de ácido giberélico. El mayor número de raíces (2.4 raíces por planta) se indujo con 1.0 µM de ANA. En la aclimatación la supervivencia fue 100% con plantas de 4.5 y 6.5 cm plantadas en turba+perlita y corteza de pino.
21
Moraes, João Gutemberg Leite, and Ervino Bleicher. "Preferência do pulgão-preto, Aphis craccivora Koch, a diferentes genótipos de feijão-de-corda, Vigna unguiculata (L.) Walp." Ciência Rural 37, no. 6 (December 2007): 1554–57. http://dx.doi.org/10.1590/s0103-84782007000600008.
Full textAbstract:
Este trabalho foi desenvolvido visando a avaliar a resposta de cultivares de feijão-de-corda, Vigna unguiculata (L.) Walp., à presença do pulgão-preto (Aphis craccivora Koch). Os experimentos foram conduzidos de agosto a outubro de 2004, em casa-de-vegetação da Universidade Federal do Ceará (UFC). As cultivares foram: "Epace-10", "Epace-11", "Patativa", "Pingo de Ouro", "Pitiúba", "BR-10 Piauí", "BR-12 Canindé", "BR-14 Mulato" e "BR-17 Gurguéia". O experimento constou de três ensaios, cada um com cinco tratamentos e seis repetições, sendo o delineamento estatístico inteiramente casualizado. Os genótipos foram cultivados em copos plásticos de 300ml e mantidos em gaiolas protegidas por tela antiafídeos. As plantas foram infestadas após doze dias do plantio através da liberação de cinco fêmeas adultas do pulgão-preto por planta. As avaliações foram realizadas após o terceiro e o quinto dia da infestação, constando da contagem direta das formas adulta e jovem do inseto presentes nas plantas. Os dados obtidos foram analisados através de análise de variância e pelo teste de Tukey em 5% de probabilidade de erro. As cultivares "Epace-10" e "Patativa" foram as menos preferidas por A. craccivora.
22
Nleya, T. M., A. E. Slinkard, and A. Vandenberg. "Evaluation of determinate and indeterminate pinto bean cultivars under an available soil moisture gradient." Canadian Journal of Plant Science 79, no. 1 (January 1, 1999): 27–34. http://dx.doi.org/10.4141/p98-030.
Full textAbstract:
Determinate dry bean (Phaseolus vulgaris L.) cultivars are preferred under irrigation in western Canada. Expansion of dry bean production into dryland areas in western Canada requires re-evaluation of the best growth habit. The objective of this study was to compare determinate and indeterminate pinto bean cultivars for seed yield and other agronomic traits under a soil moisture gradient. Six pinto bean cultivars, three determinate and three indeterminate, were grown under an available soil moisture gradient in Saskatoon SK, Canada at one environment in 1993 and at two environments in 1994. An increase in available soil moisture, induced by growing rows of pinto bean plants at increasing distances from a spring-seeded winter barley (Hordeum vulgare L.) strip, increased number of pods per plant, plant height, seed weight, seed yield and seed nitrogen concentration for both determinate and indeterminate cultivars of pinto bean. Indeterminate cultivars, however, were taller and higher yielding than determinate cultivars at every level of soil moisture under these dryland conditions. Key words: Phaseolus vulgaris, dry bean, pinto bean, soil moisture, drought stress
23
Rosales Serna, Rigoberto, Francisco Javier Ibarra Pérez, and Evenor Idilio Cuéllar Robles. "Pinto Centenario, nueva variedad de frijol para el estado de Durango." Revista Mexicana de Ciencias Agrícolas 3, no. 8 (June 14, 2018): 1655–62. http://dx.doi.org/10.29312/remexca.v3i8.1330.
Full textAbstract:
Los agricultores que cultivan frijol (Phaseolus vulgaris L.) en condiciones de temporal requieren variedades precoces que produzcan grano tolerante al oscurecimiento y tamaño mayor en relación con Pinto Saltillo, la cual es la variedad más popular en Durango. El objetivo fue obtener una variedad de frijol superior a Pinto Saltillo en precocidad, tamaño de grano y calidad comercial. La variedad Pinto Centenario (PT08034) fue generada con el método genealógico, a partir de la cruza entre Pinto Mestizo y Pinto Saltillo [(Pinto Mestizo/Pinto Saltillo)-7-5]. Pinto Centenario mostró rendimiento (1 242 kg ha-1) estadísticamente similar a Pinto Saltillo (1 201 kg ha-1), resultó más precoz a madurez (89 vs 92 días) y mostró peso de 100 semillas significativamente mayor (35 g vs 30 g), con un intervalo entre 26 y 45 g/100 semillas. El hábito de crecimiento de Pinto Centenario es de enredadera indeterminada, con guías cortas no trepadoras, el dosel tiene un promedio de altura de 27 cm y la guía crece 75 cm. La forma transversal y longitudinal de la semilla de Pinto Centenario es elíptica y tiene testa de color crema, pintas de color café e hilio amarillo. En condiciones de campo, la planta de Pinto Centenario mostró tolerancia a enfermedades como antracnosis y roya; así como susceptibilidad intermedia a tizón común y pudriciones de raíz. Pinto Centenario fue incluido en programas de validación en el Altiplano de México para establecer sus posibilidades de adopción, adaptabilidad y potencial para incrementar el rendimiento y calidad del frijol producido en la región.
24
Mündel, H. H., F. A. Kiehn, H. C. Huang, R. L. Conner, and P. Balasubramanian. "Agrinto Pinto Bean." Canadian Journal of Plant Science 86, no. 4 (October 10, 2006): 1175–77. http://dx.doi.org/10.4141/p06-045.
Full textAbstract:
Agrinto is a tall, partially upright pinto bean (Phaseolus vulgaris L.), with s hort vines, average seed weight of 340 mg, which was developed at the Agriculture and Agri-Food Canada (AAFC) Research Centre, Lethbridge, AB, in collaboration with the AAFC Research Station, Morden, MB. Agrinto is well adapted to wide-row irrigated produ ction of the Canadian prairies, with yields comparable to the check cultivar, Othello. Agrinto is resistant to both yellow and orange strains of the bacterial wilt, caused by Curtobacterium flaccumfasciens pv. flaccumfasciens (Hedges) Collins & Jones. Agrinto is resistant to race 73 of anthracnose [caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib] and is moderately resistant to white mould [caused by Sclerotinia sclerotiorum (Lib.) de Bary]. Key words: Phaseolus vulgaris, pinto bean, cultivar description, bacterial wilt resistance, upright
25
Mündel, H. H., F. A. Kiehn, H. C. Huang, R. L. Conner, and P. Balasubramanian. "Island pinto bean." Canadian Journal of Plant Science 88, no. 1 (January 1, 2008): 161–63. http://dx.doi.org/10.4141/cjps07044.
Full textAbstract:
Island is a high-yielding, tall, partially upright pinto bean (Phaseolus vulgaris L.), with short vines and an average seed weight of 38.5 g 100 seeds-1. It was developed at the Agriculture and Agri-Food Canada (AAFC) Research Centre, Lethbridge, AB, in collaboration with the AAFC Research Station, Morden, MB. Island is well adapted to wide-row irrigated production of the Canadian prairies, with yields exceeding those of Othello, the check cultivar. Island is moderately susceptible, as is Othello, to race 73 of anthracnose [caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib]; and is moderately resistant to white mould [caused by Sclerotinia sclerotiorum (Lib.) de Bary]. Key words: Pinto (bean), cultivar description, high yield
26
Balasubramanian, P. M., F. A. Kiehn, H. H. Mündel, R. L. Conner, and H. C. Huang. "Winmor pinto bean." Canadian Journal of Plant Science 88, no. 5 (September 1, 2008): 933–35. http://dx.doi.org/10.4141/cjps08048.
Full textAbstract:
Winmor is an early-maturing, partially upright pinto bean (Phaseolus vulgaris L.) with high yield potential and an average seed weight of 35.8 g 100 seeds-1. Winmor was developed at the Agriculture and Agri-Food Canada (AAFC) Research Station, Morden, MB, in collaboration with the AAFC Research Centre, Lethbridge, AB. Winmor is well adapted to the Canadian prairies, especially for production in southern Manitoba. Winmor is resistant to anthracnose race 73 [caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib.], the predominant race in Manitoba. Winmor is susceptible, as is the check cultivar AC Pintoba, to white mould [caused by Sclerotinia sclerotiorum (Lib.) de Bary] and common bacterial blight [caused by Xanthomonas axonopodis pv. phaseoli (Smith) Vauterin et al. (Xap)]. Key words: Pinto bean, cultivar description, anthracnose resistance, early maturity
27
Bonilla Rivera, Pablo, and Bertha Pareja Pareja. "Flavonoides de Ephera americana (pinco pinco), Acción biológica sobre el sistema inmunológico (IgE)." Ciencia e Investigación 4, no. 1 (June 18, 2001): 57–77. http://dx.doi.org/10.15381/ci.v4i1.3398.
Full textAbstract:
Se realizó el estudio fitoquímico y de la actividad biológica de la parte aérea de Ephedra americana, "pinco-pinco" planta que crece en zonas altoandinas del departamento del Cusco, en la provincia de Calca, Perú, aproximadamente a 3500 msnm. Con la muestra en polvo, se realizó la marcha fitoquímica , determinándose la presencia de alcaloides, compuestos fenólicos tipo flavonoides, taninos, glicósidos, etc., mediante ensayos de solubilidad se observó que los metabolitos secundarios eran de mediana y alta polaridad, confirmándose por cromatografía en capa fina. Se procedió a la separación de los compuestos fenólicos por cromatografía en columna rápida, obteniéndose varias fracciones. Estas fueron purificadas mediante cromatografía a escala preparativa utilizando diversos sistemas de solventes elucidándose estructuralmente cinco flavonoides de conocida actividad antioxidante, denominados: Hesperidina; Crisina; 3',4' ,S,7-tetrahidroxi-6,8-di-R flavona; 3' ,5,7' -trihidroxi- 4' ,6-dimetoxi flavonol y 4' -hidroxi-S,7-dimetoxi flavonona. En el extracto etanólico se determinó actividad inmunoestimulante, efecto antioxidante, acción tóxica sobre Artemia salina, acción antiulcerosa, acción sobre la motilidad intestinal, actividad antiinflamatoria, su toxicidad y actividad antimicrobiana.
28
Pedroza-Sandoval, Aurelio, Ricardo Trejo-Calzada, Ignacio Sánchez-Cohen, José Alfredo Samaniego-Gaxiola, and Luis Gerardo Yánez-Chávez. "Evaluación de tres variedades de frijol pinto bajo riego y sequía en Durango, México." Agronomía Mesoamericana 27, no. 1 (December 9, 2015): 167. http://dx.doi.org/10.15517/am.v27i1.21896.
Full textAbstract:
<p class="p1">El objetivo de este estudio fue evaluar el crecimiento y fisiología de tres variedades de frijol en condiciones de riego y sequía. El estudio se llevó a cabo durante el 2014 en el campo experimental de la Universidad Autónoma de Chapingo, Unidad Regional Universitaria de Zonas Áridas, Durango, México. Se usó un diseño experimental de bloques al azar con tres repeticiones en un arreglo de parcelas divididas. Estas parcelas fueron los contenidos de humedad en el suelo: favorable, próximo a capacidad de campo (CC: 22-26%) y desfavorable, próximo al punto de marchitez permanente (PMP: 16-20%); las subparcelas fueron las variedades de frijol: Pinto Centauro, Pinto Americano y Pinto Saltillo. La variedad Pinto Centauro fue la de mayor altura de planta (10,2 cm), cobertura vegetal (155,1 cm<span class="s2">2</span>) y producción de materia seca por planta (5,2 g) y fisiológicamente sobresalió en su eficiencia en el uso de agua (15,8 μmol de CO<span class="s2">2</span>: μmol de H<span class="s2">2</span>0). La variedad Pinto Americano fue la de mayor estabilidad en crecimiento y desarrollo al pasar de la condición de humedad favorable (CC) a la desfavorable (PMP), lo cual la hace más viable ante condiciones restrictivas de disponibilidad hídrica; pero alta susceptibilidad a la pudrición de raíz asociada a patógenos del suelo.</p>
29
Bauer, Troy A., Karen A. Renner, Donald Penner, and James D. Kelly. "Pinto Bean (Phaseolus vulgaris) Varietal Tolerance to Imazethapyr." Weed Science 43, no. 3 (September 1995): 417–24. http://dx.doi.org/10.1017/s0043174500081418.
Full textAbstract:
Field and laboratory studies were conducted to determine if differences existed in pinto bean varietal tolerance to postemergence application of imazethapyr under field conditions; if differences in tolerance were due to differential acetolactate synthase enzyme sensitivity or differences in14C-imazethapyr absorption, translocation, and metabolism; and the heritability of imazethapyr tolerance in pinto bean. All rates of imazethapyr injured Olathe, Sierra, UI-114, P89405, Aztec, and P90570 pinto bean varieties 7 d after treatment in 1991 and 1992, except 53 g ai ha−1of imazethapyr applied to Sierra pinto bean in 1991. Olathe was injured more than other varieties in 1991, and physiological maturity of Olathe was delayed more than Sierra in 1991 and 1992. Seed yields of all varieties were not reduced in 1991, and only P90570 had reduced seed yields from 53 g ha−1of imazethapyr in 1992. Differential sensitivity of the acetolactate synthase enzyme to imazethapyr was not the mechanism of differential varietal response. Olathe pinto bean absorbed and translocated 1.4 and 1.3 times more14C-imazethapyr, respectively, than Sierra pinto bean 24 h after application. No differences in14C-imazethapyr metabolism were detected between Olathe and Sierra pinto bean. Broad heritability of imazethapyr tolerance in pinto bean was calculated to be 0.85. The number of genes controlling the inheritance of imazethapyr tolerance in pinto bean was greater than one.
30
Amthor, Jeffrey S., and Jonathan R. Cumming. "Low levels of ozone increase bean leaf maintenance respiration." Canadian Journal of Botany 66, no. 4 (April 1, 1988): 724–26. http://dx.doi.org/10.1139/b88-105.
Full textAbstract:
Pinto bean (Phaseolus vulgaris) plants were exposed to charcoal-filtered air with or without added low levels of ozone (90 nL∙L−1). Dark respiration (CO2 efflux) by expanding primary leaves of the plants was measured and mathematically partitioned into growth and maintenance components. The growth respiration coefficient was unaffected by ozone, whereas the maintenance respiration coefficient increased 15%. Such a relative increase in maintenance respiration results in a diversion of energy and metabolic intermediates from growth processes.
31
Harding, M. W., J. C. Stutz, and R. W. Roberson. "Host-parasite relationships in bean cultivars of varying susceptibility to bean rust." Canadian Journal of Botany 77, no. 11 (January 30, 2000): 1551–59. http://dx.doi.org/10.1139/b99-104.
Full textAbstract:
Components of disease development were measured in three cultivars of Phaseolus vulgaris L. (common bean) infected with Uromyces appendiculatus (Pers.:Pers.) Unger (bean rust fungus) race O. Disease measurements and light and electron microscope data of host-parasite relationships were obtained and analyzed. Uredinial size, infection efficiency, latent period, and fungal colony radius were measured from infected bean leaves that were grown under controlled conditions. Phaseolus vulgaris cultivar Pinto 111, a highly susceptible check, displayed the largest uredinia, the highest infection efficiency, large colony radii, and a short latent period. Cultivars Early Gallatin and Kentucky Wonder (K.W.) 814 displayed moderate and low susceptibility, respectively. Cultivar Early Gallatin had smaller uredinia, reduced infection efficiency, and longer latent period when compared with cv. Pinto 111. Cultivar K.W. 814 was characterized by minute pustules, restricted colony expansion, and the longest latent period. Ultrastructural data of host-parasite relationships were collected from infected leaf tissues and prepared for transmission electron microscopy by high-pressure cryofixation and freeze substitution. In 'Pinto 111' the collars around haustorial necks were composed of a fibrillar network embedded in an electron transparent matrix. Ultrastructural observations indicated that Cultivars K.W. 814 and Early Gallatin deposited more collar material than 'Pinto 111.' Networks of tubular endomembranes developed near the host-parasite interface in the host cytoplasm of cultivars K.W. 814 and Early Gallatin. The tubules showed continuity with the extrahaustorial membrane and contained an amorphous, electron-dense material in the lumen. Tubular endomembranes were not seen in the highly susceptible cultivar Pinto 111.
32
Mesbah, Abdel O., Stephen D. Miller, and Paul J. Koetz. "Common Sunflower (Helianthus annuus) and Green Foxtail (Setaria viridis) Interference in Dry Bean." Weed Technology 18, no. 4 (December 2004): 902–7. http://dx.doi.org/10.1614/wt-03-054r1.
Full textAbstract:
Field experiments were conducted in 1994 and 1995 under sprinkler irrigation at the University of Wyoming Research and Extension Center at Torrington to evaluate the effects of season-long interference and the effects of duration of interference of several common sunflower and green foxtail densities, alone or in combination, on pinto bean yield. Green foxtail densities did not significantly affect pinto bean yield in 1994 and reduced yield only at the highest density in 1995. In contrast, sunflower densities reduced pinto bean yield, except at the lowest density in 1994. Pinto bean yield was reduced as the combined density of green foxtail and sunflower increased. Compared with yield losses from each weed species alone, yield reductions from mixed species were additive in 1994 and at low weed densities in 1995 and less than additive at higher weed densities in 1995. The minimum number of weeds per m of row that will economically reduce pinto bean yield was estimated to be 1.6 to 2.9 for green foxtail and 0.12 to 0.2 for sunflower. Pinto bean yield reduction increased as the duration of green foxtail and sunflower interference increased, whether grown alone or in combination. The maximum duration that green foxtail, sunflower, and green foxtail plus sunflower can interfere with pinto bean before causing economical losses was estimated to be 4.5, 3.2, and 2.5 wk, respectively.
33
Aguilera Rodríguez, Manuel, Arnulfo Aldrete, Tomás Martínez Trinidad, and Víctor Manuel Ordaz Chaparro. "Producción de Pinus pseudostrobus Lindl. con sustratos de aserrín y fertilizantes de liberación controlada." Revista Mexicana de Ciencias Forestales 7, no. 34 (November 8, 2017): 007–19. http://dx.doi.org/10.29298/rmcf.v7i34.79.
Full textAbstract:
El aserrín de pino se ha empleado para la producción de planta en los viveros forestales con resultados prometedores. El objetivo del presente trabajo consistió en probar la eficiencia de dos sustratos de ese material y dos fertilizantes de liberación controlada. Se produjo Pinus pseudostrobus en charolas de poliestireno de 77 cavidades, con S1 (aserrín de pino intemperizado, corteza compostada de pino, turba de musgo y vermiculita, 60, 15, 15, y 10 %), y S2 (aserrín fresco de pino, corteza compostada de pino, turba de musgo y vermiculita, 60, 15, 15 y 10 %); además de dos fertilizantes con dos periodos de liberación de nutrimentos: Multicote® (18-6-12, de 8 y 4 meses) y Osmocote Plus® (15-9-12, de 8 a 9 meses y 5 a 6 meses), con una dosis única de 8 g L-1 de sustrato. Se usó un diseño completamente al azar, con 12 tratamientos y cuatro repeticiones. En todos los casos se obtuvo planta de buena calidad, con diámetro mayor de 5 mm, altura de 22 a 25 cm e índice de calidad de Dickson superior a 0.7. Los valores de las variables morfológicas fueron iguales en ambos sustratos, excepto el peso seco radical que fue superior en el sustrato S2. Osmocote® presentó valores superiores a Multicote®, pero solo en la variable altura fue menor. Se concluye que el aserrín de pino es útil como sustrato, y que la combinación de fertilizantes con diferentes períodos de liberación es más eficiente que la aplicación de un solo fertilizante.
34
Bytnerowicz, A., P. J. Temple, and O. C. Taylor. "Effects of simulated acid fog on leaf acidification and injury development of pinto beans." Canadian Journal of Botany 64, no. 5 (May 1, 1986): 918–22. http://dx.doi.org/10.1139/b86-123.
Full textAbstract:
Pinto beans (Phaseolus vulgaris L. cv. UI 111) were exposed for 8 h to simulated fog solutions made up of 2:1 nitric acid: sulfuric acid plus background ions, acidified to pH 3.2, 2.8, 2.4, and 2.0. Rate of fog deposition was ca. 1 mm h−1. Examination of visible foliar injury development, scanning electron microscopy (SEM) examination, and measurement of leaf extract pH were performed every 2 h. Both visual and SEM observations during exposure showed no change in leaf surface characteristics for plants exposed to pH 3.2 and 2.8 fog solutions but 1 week after pH 2.8 exposures, injury was seen on primary leaves and young trifoliate leaves. The first indications of injury at pH 2.4 were seen under SEM after 8 h of exposure. Foliar injury was apparent after only 2 h of exposure at pH 2.0 and severe acid necrosis developed after 24 h. Changes in acidity of leaf extracts were closely correlated with subsequent injury development. No changes were observed in extracts of plants exposed to pH 3.2 simulated fog compared with controls. After 8 h of exposure, leaf extracts of plants exposed to pH 2.8 fog had dropped 0.05 pH units. Plants exposed to pH 2.4 and pH 2.0 for 8 h had leaf extracts that were 0.12 and 0.18 pH units lower, respectively. Comparison of the three measured parameters of acid fog effects (visible injury development, SEM examination of leaf surfaces, and determination of leaf extract pH) showed extract pH to be a simple, quantifiable, and sensitive indicator of the negative effects of acid precipitation on plants.
35
Acosta Gallegos, Jorge A., Yanet Jiménez Hernández, Víctor Montero Tavera, S. Horacio Guzmán Maldonado, and José Luis Anaya López. "San Rafael, nueva variedad de frijol pinto de reacción neutral al fotoperiodo para el centro de México." Revista Mexicana de Ciencias Agrícolas 7, no. 3 (October 2, 2017): 717. http://dx.doi.org/10.29312/remexca.v7i3.330.
Full textAbstract:
El frijol de tipo pinto es de alta demanda por los consumidores del Centro-Norte de México. Se describe la nueva variedad ‘San Rafael’derivada de la cruza biparental de Pinto Bayacora por Pinto Saltillo realizada en 2004 en el Campo Experimental Bajío del Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias. El proceso de selección de ‘San Rafael’ se llevó a cabo bajo condiciones de riego y temporal en la región del Bajío y en una localidad del altiplano en el Norte de Guanajuato. La planta de ‘San Rafael’ es de hábito indeterminado postrado de guía corta, ciclo de cultivo corto de reacción neutral al fotoperiodo (puede sembrarse en cualquier época del año y latitud sin que se modifique su ciclo). San Rafael presenta resistencia a las principales enfermedades foliares que ocurren en el Altiplano, como son tizón de halo, antracnosis y roya. El grano es de tipo pinto, forma ovalada, tamaño mediano, con tolerancia al oscurecimiento (larga vida de anaquel), tipo de grano de alto valor comercial. Por su respuesta neutral al fotoperíodo, ‘San Rafael’ permitirá su explotación en diferentes ventanas de tiempo, ampliando así la oferta de frijol fresco en el año. ‘San Rafael’ se adapta a los sistemas de producción bajo riego y temporal en el altiplano y la región del noroeste. Por lo definido de su ciclo de cultivo y tamaño de planta, esta variedad se puede utilizar en sistemas de surcos cerrados a doble hilera.
36
Kim, Y., C. Seigneur, and O. Duclaux. "Development of a plume-in-grid model for industrial point and volume sources: application to power plant and refinery sources in the Paris region." Geoscientific Model Development 7, no. 2 (April 4, 2014): 569–85. http://dx.doi.org/10.5194/gmd-7-569-2014.
Full textAbstract:
Abstract. Plume-in-grid (PinG) models incorporating a host Eulerian model and a subgrid-scale model (usually a Gaussian plume or puff model) have been used for the simulations of stack emissions (e.g., fossil fuel-fired power plants and cement plants) for gaseous and particulate species such as nitrogen oxides (NOx), sulfur dioxide (SO2), particulate matter (PM) and mercury (Hg). Here, we describe the extension of a PinG model to study the impact of an oil refinery where volatile organic compound (VOC) emissions can be important. The model is based on a reactive PinG model for ozone (O3), which incorporates a three-dimensional (3-D) Eulerian model and a Gaussian puff model. The model is extended to treat PM, with treatments of aerosol chemistry, particle size distribution, and the formation of secondary aerosols, which are consistent in both the 3-D Eulerian host model and the Gaussian puff model. Furthermore, the PinG model is extended to include the treatment of volume sources to simulate fugitive VOC emissions. The new PinG model is evaluated over Greater Paris during July 2009. Model performance is satisfactory for O3, PM2.5 and most PM2.5 components. Two industrial sources, a coal-fired power plant and an oil refinery, are simulated with the PinG model. The characteristics of the sources (stack height and diameter, exhaust temperature and velocity) govern the surface concentrations of primary pollutants (NOx, SO2 and VOC). O3 concentrations are impacted differently near the power plant than near the refinery, because of the presence of VOC emissions at the latter. The formation of sulfate is influenced by both the dispersion of SO2 and the oxidant concentration; however, the former tends to dominate in the simulations presented here. The impact of PinG modeling on the formation of secondary organic aerosol (SOA) is small and results mostly from the effect of different oxidant concentrations on biogenic SOA formation. The investigation of the criteria for injecting plumes into the host model (fixed travel time and/or puff size) shows that a size-based criterion is recommended to treat the formation of secondary aerosols (sulfate, nitrate, and ammonium), in particular, farther downwind of the sources (beyond about 15 km). The impacts of PinG modeling are less significant in a simulation with a coarse grid size (10 km) than with a fine grid size (2 km), because the concentrations of the species emitted from the PinG sources are relatively less important compared to background concentrations when injected into the host model with a coarser grid size.
37
Kim, Y., C. Seigneur, and O. Duclaux. "Development of a plume-in-grid model for industrial point and volume sources: application to power plant and refinery sources in the Paris region." Geoscientific Model Development Discussions 6, no. 4 (November 27, 2013): 5863–900. http://dx.doi.org/10.5194/gmdd-6-5863-2013.
Full textAbstract:
Abstract. Plume-in-grid (PinG) models incorporating a host Eulerian model and a subgrid-scale model (usually a Gaussian plume or puff model) have been used for the simulations of stack emissions (e.g., fossil fuel-fired power plants and cement plants) for gaseous and particulate species such as nitrogen oxides (NOx), sulfur dioxide (SO2), particulate matter (PM) and mercury (Hg). Here, we describe the extension of a PinG model to study the impact of an oil refinery where volatile organic compound (VOC) emissions can be important. The model is based on a reactive PinG model for ozone (O3), which incorporates a three-dimensional (3-D) Eulerian model and a Gaussian puff model. The model is extended to treat PM, with treatments of aerosol chemistry, particle size distribution, and the formation of secondary aerosols, which are consistent in both the 3-D Eulerian host model and the Gaussian puff model. Furthermore, the PinG model is extended to include the treatment of volume sources to simulate fugitive VOC emissions. The new PinG model is evaluated over Greater Paris during July 2009. Model performance is satisfactory for O3, PM2.5 and most PM2.5 components. Two industrial sources, a coal-fired power plant and an oil refinery, are simulated with the PinG model. The characteristics of the sources (stack height and diameter, exhaust temperature and velocity) govern the surface concentrations of primary pollutants (NOx, SO2 and VOC). O3 concentrations are impacted differently near the power plant than near the refinery, because of the presence of VOC emissions at the latter. The formation of sulfate is influenced by both the dispersion of SO2 and the oxidant concentration; however, the former tends to dominate in the simulations presented here. The impact of PinG modeling on the formation of secondary organic aerosols (SOA) is small and results mostly from the effect of different oxidant concentrations on biogenic SOA formation. The investigation of the criteria for injecting plumes into the host model (fixed travel time and/or puff size) shows that a size-based criterion is recommended to treat the formation of secondary aerosols (sulfate, nitrate, and ammonium), in particular, farther downwind of the sources (from about 15 km). The impacts of the PinG modeling are less significant in a simulation with a coarse grid size (10 km) than with a fine grid size (2 km), because the concentrations of the species emitted from the PinG sources are relatively less important compared to background concentrations when injected into the host model.
38
Garber, Nicholas P., and Mary W. Olsen. "Leaf Spot of Pinto Bean Caused by a Long-beaked Alternaria in Southeastern Arizona." Plant Health Progress 12, no. 1 (January 2011): 32. http://dx.doi.org/10.1094/php-2011-1018-01-br.
Full textAbstract:
This report identifies an Alternaria disease affecting pinto beans in incidence in Arizona. The similarity of disease symptoms and morphology of the pathogen to a recently characterized Alternaria and its disease of bean in Brazil causes concern about its potentially damaging effects on pinto bean production in Arizona. Accepted for publication 20 September 2011. Published 18 October 2011.
39
del Río, L. E., J. R. Venette, and H. A. Lamey. "Impact of White Mold Incidence on Dry Bean Yield Under Nonirrigated Conditions." Plant Disease 88, no. 12 (December 2004): 1352–56. http://dx.doi.org/10.1094/pdis.2004.88.12.1352.
Full textAbstract:
Studies on chemical control of white mold, conducted between 1994 and 2001 at several locations in North Dakota, resulted in diverse levels of white mold incidence and severity. Navy bean cultivars were evaluated in on-farm trials between 1994 and 1996, while pinto bean cultivars were used between 1997 and 2001. The relationship between yield and white mold incidence in these trials was examined using correlation and regression analysis. White mold incidence was correlated to severity using a second-degree polynomial equation (R 2 = 0.90, P = 0.0001) in pinto bean experiments. For every percent unit increase in white mold incidence, yield was reduced by 12 kg/ha (range 7 to 19 kg/ha) in pinto bean and by 23 kg/ha (range 19 to 26 kg/ha) in navy bean. In both instances, the coefficients of determination were significant (P < 0.04) for most locations or years, and ranged from 0.42 to 0.87 for pinto bean and from 0.98 to 0.99 for navy bean. Fungicide-protected plots had an average white mold incidence of 34 and 50% compared with 76 and 73% in nonprotected plots for pinto and navy bean, respectively. Fungicide applications increased yields by 33 and 26% (P ≤ 0.05) for pinto and navy bean, respectively.
40
BRACKMANN, AURI, DANIEL ALEXANDRE NEUWALD, and CRISTIANO ANDRÉ STEFFENS. "ARMAZENAMENTO DE MAÇÃ 'FUJI' COM INCIDÊNCIA DE PINGO-DE-MEL." Revista Brasileira de Fruticultura 23, no. 3 (December 2001): 526–31. http://dx.doi.org/10.1590/s0100-29452001000300015.
Full textAbstract:
Foram realizados dois experimentos com o objetivo de avaliar o efeito da temperatura e da concentração de O2, durante o armazenamento em atmosfera controlada (AC) sobre a conservação da maçã 'Fuji' afetada com pingo-de-mel. No experimento 1, utilizaram-se pressões parciais de 0,8; 1,1 e 1,6kPa de O2 combinado com <0,5kPa de CO2, na temperatura de 0,5ºC. No experimento 2, combinaram-se armazenamento refrigerado (AR) e AC (1,1kPa de O2 e <0,5kPa de CO2) com as temperaturas de -0,5ºC e 0,5ºC. A UR, em ambos os experimentos, foi de 96%. Após sete meses de armazenamento e mais sete dias a 20ºC, no experimento 1, a redução da pressão parcial de O2 diminuiu a degradação dos ácidos, incidência de degenerescência senescente e manteve a cor verde da epiderme. Por outro lado, a incidência de podridão, na saída da câmara, aumentou com a redução da pressão parcial de O2. No experimento 2, o uso de AC manteve a firmeza de polpa, a acidez titulável mais elevada e a cor da epiderme mais verde dos frutos, na saída da câmara. A incidência de degenerescência senescente e podridões foram menores em AC, e a temperatura de -0,5ºC também reduziu a incidência de degenerescência senescente em relação a 0,5ºC. A incidência de degenerescência com cortiça foi mais elevada em AC.
41
Balasubramanian, P. M., H. H. Mündel, S. Chatterton, R. L. Conner, and A. Hou. "AAC Burdett pinto dry bean." Canadian Journal of Plant Science 95, no. 1 (January 2015): 179–81. http://dx.doi.org/10.4141/cjps-2014-248.
Full textAbstract:
Balasubramanian, P., Mündel, H.-H., Chatterton, S., Conner, R. L. and Hou, A. 2015. AAC Burdett pinto dry bean. Can. J. Plant Sci. 95: 179–181. AAC Burdett is an early-maturing pinto bean (Phaseolus vulgaris L.) cultivar with an upright, indeterminate bush growth habit, lodging resistance, white mould avoidance and high yield potential. AAC Burdett was developed at the Agriculture and Agri-Food Canada (AAFC) Research Centre, Lethbridge, AB. AAC Burdett is suitable for irrigated production in Alberta and Saskatchewan.
42
Balasubramanian, Parthiba M., Syama Chatterton, and Robert L. Conner. "AAC Expedition pinto dry bean." Canadian Journal of Plant Science 99, no. 3 (June 1, 2019): 399–404. http://dx.doi.org/10.1139/cjps-2018-0258.
Full textAbstract:
AAC Expedition is a high-yielding pinto dry bean (Phaseolus vulgaris L.) cultivar with a semi-upright, indeterminate bush (type IIb) growth habit, large seed size, low percentage of hard seed, and bright seed coat colour. Its improved seed quality traits, particularly its bright seed coat colour, low percentage of hard seeds after soaking, and high yield potential, will make AAC Expedition a preferred pinto bean cultivar for commercial production. AAC Expedition, developed by the Agriculture and Agri-Food Canada Lethbridge Research and Development Centre, Lethbridge, AB, is well suited for commercial production under irrigation in Alberta and Saskatchewan.
43
Luz, Petterson Baptista da, Francismar Francisco Alves Aguiar, Armando Reis Tavares, Shoey Kanashiro, Janaina Aguiar, and Thais Denise Rodrigues do Nascimento. "Desenvolvimento de Rhapis excelsa (Thunberg) Henry Ex. Rehder (Palmeira-Ráfia): Influência da altura do recipiente na formação de mudas." Ciência e Agrotecnologia 30, no. 1 (February 2006): 31–34. http://dx.doi.org/10.1590/s1413-70542006000100004.
Full textAbstract:
Rhapis excelsa, originária do sul da China, é uma das palmeiras ornamentais mais cultivadas no mundo, principalmente em vaso. Objetivou-se com esta pesquisa investigar a influência da altura do vaso no desenvolvimento da espécie. Para tanto, mudas de dois anos de idade, apresentando 10 cm de altura e sistema radicular com 10 cm de comprimento, foram transplantadas para recipientes de PVC com 10 cm de diâmetro e 20, 25, 30, 35 e 40 cm de altura, que se constituíram em tratamentos. O substrato utilizado foi uma mistura de casca de pinho, vermiculita e solo argiloso (2:1:1), adubado com 45 g de Osmocote (15:10:10). Os parâmetros avaliados foram: altura da planta, diâmetro do colo, número de folhas, número de perfilhos emitidos, avaliados aos 6, 12 e 18 meses após a instalação do experimento. Aos 18 meses foram tomados também o peso da matéria seca da parte aérea e o peso da matéria seca das raízes. O delineamento experimental foi inteiramente casualizado, com cinco repetições com duas plantas. Houve diferença significativa para a variável altura de plantas, aos 6 meses, sendo que o recipiente de 40 cm de altura apresentou o pior resultado. Não houve diferença significativa entre as variáveis analisadas aos 12 meses de investigação. Já aos 18 meses, houve diferenças significativas entre os tratamentos para as variáveis altura da planta e diâmetro do colo, sendo o recipiente de 40 cm inferior aos demais em relação à altura da planta e o de 25 cm superior quanto ao diâmetro do colo. A utilização do recipiente com 25 cm de altura revelou-se interessante pela qualidade das plantas formadas e em relação a aspectos econômicos da produção.
44
Singh, Hardeep, Megha R. Poudel, Bruce Dunn, Charles Fontanier, and Gopal Kakani. "Greenhouse Carbon Dioxide Supplementation with Irrigation and Fertilization Management of Geranium and Fountain Grass." HortScience 55, no. 11 (November 2020): 1772–80. http://dx.doi.org/10.21273/hortsci15327-20.
Full textAbstract:
Increase in ambient carbon dioxide (CO2) concentration is beneficial for plant growth due to increased photosynthesis and water use efficiency. A greenhouse study was conducted to investigate how supplemented CO2 influences optimal irrigation and fertilization management for production of two ornamental plants. Two identical greenhouses were used, with one having CO2 supplementation and the other serving as the control with ambient CO2 concentration. Tensiometer-based irrigation treatments were applied at soil tensions of –5, –10, and –15 kPa with 0-, 3-, 6-, or 9-g controlled-release fertilizer rates applied in factorial with irrigation treatments. Plugs of geranium ‘Pinto Premium Rose Bicolor’ and fountain grass were grown under experimental conditions for 12 and 16 weeks, respectively. The results showed that CO2 supplementation increased the dry weight of geranium ‘Pinto Premium Rose Bicolor’ and fountain grass by 35% and 39%, respectively. Under the two driest irrigation regimes (–10 and –15 kPa), photosynthesis of geranium ‘Pinto Premium Rose Bicolor’ increased with CO2 supplementation compared with the ambient condition. Similarly, for fountain grass, the moderately watered (–10 kPa) treatment had a greater rate of photosynthesis with greater fertilizer rates of 6 or 9 g. CO2 supplementation resulted in increased water use efficiency of both species, whereas rate of transpiration was lower only in fountain grass. Among different fertilizer rates, 6- or 9-g fertilizer rates had greater values for dry weight, number of flowers, and stomatal conductance in both species. Therefore, it can be concluded that CO2 supplementation can help in efficient use of water for greenhouse production of ornamental plants.
45
Bernaola Paucar, Rosario Marilú, Juan Francisco Zamora Natera, José De Jesús Vargas Radillo, Víctor Manuel Cetina Alcalá, Ramón Rodríguez Macías, and Eduardo Salcedo Pérez. "Calidad de planta en etapa de vivero de dos especies de pino en sistema Doble-Trasplante." Revista Mexicana de Ciencias Forestales 7, no. 33 (November 16, 2017): 074–93. http://dx.doi.org/10.29298/rmcf.v7i33.91.
Full textAbstract:
El objetivo de esta investigación fue evaluar la calidad de planta producida en el sistema de Doble-Trasplante, con diferente volumen de contenedor y fertilización, en dos coníferas: Pinus douglasiana y Pinus devoniana, cuyas características e índices de calidad en vivero permitan estimar el éxito de su supervivencia en campo. Se seleccionaron 500 plantas por especie de 12 meses de edad (125 por tratamiento), producidas en charolas de poliestireno con un volumen por cavidad de 0.165 L., las cuales se trasplantaron y mantuvieron durante cinco meses en los contenedores de 1 y 5 L y con dos rutinas de fertilización (con y sin fertilizante). Se aplicó un diseño en bloques completamente al azar, con arreglo factorial 22 con cuatro tratamientos por taxon. El volumen del contenedor, en ambos taxa, tuvo un efecto positivo en las variables de crecimiento; sin embargo, solo Pinus devoniana registró una respuesta positiva a la fertilización adicional. Los contenidos foliares de N, Fe, Cu, Ca y Mn presentaron una relación con el crecimiento en los dos pinos bajo estudio. Para predecir el porcentaje de supervivencia en campo, el índice de Dickson (IQ) resultó ser el mejor indicador de calidad para P. douglasiana, mientras que para P. devoniana fue el índice de contenedor raíz (ICR). Por lo anterior, y por su facilidad de uso, el ICR se propone como un método práctico para determinar la calidad de planta en vivero.
46
Arnold, Richard N., Martina W. Murray, Eddie J. Gregory, and Dan Smeal. "Weed Control in Pinto Beans (Phaseolus vulgaris) with Imazethapyr Combinations." Weed Technology 7, no. 2 (June 1993): 361–64. http://dx.doi.org/10.1017/s0890037x00027731.
Full textAbstract:
Imazethapyr, alone and in combination with other herbicides, was applied PPI, PRE, and POST to pinto beans to determine weed control and selectivity to the crop. All of the herbicides improved pinto bean yield as compared with the unweeded control. Imazethapyr applied PPI and POST provided excellent control of black nightshade, kochia, Russian thistle, prostrate pigweed, and redroot pigweed. Barnyardgrass control with imazethapyr ranged from 58 to 96% and increased to 98% or greater when imazethapyr was combined with metolachlor, pendimethalin, trifluralin, or EPTC. Pinto bean yield was not reduced from any herbicide treatment compared to the handweeded control.
47
Thomson, M. Scott, and R. E. Stinner. "TRICHOGRAMMA SPP. (HYMENOPTERA: TRICHOGRAMMATIDAE): FIELD HOSTS AND MULTIPLE PARASITISM IN NORTH CAROLINA." Journal of Entomological Science 24, no. 2 (April 1, 1989): 232–40. http://dx.doi.org/10.18474/0749-8004-24.2.232.
Full textAbstract:
Trichogramma spp. were reared from eggs of six families of Lepidoptera and two families of Neuroptera, collected from a variety of host plants in campestral habitats of central and eastern North Carolina. The species collected and frequency among 705 parasitized host eggs (mostly Heliothis spp., Ogdoconta cinereola (Guenée), and Diatraea crambidoides (Grote) or Ostrinia nubilalis (Hübner)) were Trichogramma exiguum Pinto and Platner, 610; T. parkeri Nagarkatti, 30; T. pretiosum Riley, 25; T. maltbyi Nagaraja & Nagarkatti, 9; T. minutum Riley, 8; T. nomlaki Pinto and Oatman, 2; T. nubilale Ertle and Davis, 1. Also, 20 host eggs were parasitized by more than one of these species. The data support the generalization that Trichogramma spp. are highly polyphagous and that a number of species occur in close ecological association.
48
Osuna-Ceja, Esteban Salvador, Luis Reyes-Muro, José Saúl Padilla-Ramírez, and Miguel Ángel Martínez-Gamiño. "Rendimiento de frijol Pinto Saltillo en altas densidades de población bajo temporal." Revista Mexicana de Ciencias Agrícolas 3, no. 7 (June 19, 2018): 1389–400. http://dx.doi.org/10.29312/remexca.v3i7.1345.
Full textAbstract:
Para la obtención de altos rendimientos en frijol de temporal es necesario ajustar el manejo agronómico del cultivo al medio ambiente. La presente investigación se realizó con el objetivo de evaluar la respuesta de rendimiento de la variedad Pinto Saltillo, con hábito de crecimiento indeterminado postrado, a diferentes densidades de plantas (90 mil, 145 mil y 260 mil plantas ha-1) y distanciamiento entre surcos (0.76, 0.40 y 0.20 m). Los experimentos se realizaron en Sandovales y Pabellón, Ags. durante primavera-verano en 2010 y 2011. Se estudiaron tres métodos de siembra (una, hilera en surcos de 0.76 m, y tres y seis hileras en surcos estrechos en camas a 1.52 m). Se registraron datos sobre rendimiento y sus componentes. En ambos años, los análisis de varianza para el rendimiento y sus componentes mostraron diferencias significativas (p< 0.01) entre tratamientos. Los máximos rendimientos se obtuvieron con la siembra a tres y seis hileras, en densidades de 145 mil y 260 mil plantas ha-1, respectivamente. El rendimiento aumentó 28.6% y 41% al reducir la distancia entre surcos, del distanciamiento tradicional de 0.76 m, a 0.40 y 0.20 m, respectivamente. Se concluye que la variedad de frijol estudiada incrementa su rendimiento en alta densidad de plantas bajo condiciones de temporal en la región semiárida de México.
49
McMillan, M. S., H. F. Schwartz, and K. L. Otto. "Sexual Stage Development of Uromyces appendiculatus and Its Potential Use for Disease Resistance Screening of Phaseolus vulgaris." Plant Disease 87, no. 9 (September 2003): 1133–38. http://dx.doi.org/10.1094/pdis.2003.87.9.1133.
Full textAbstract:
In June 1989, pycnia and aecia of the bean rust pathogen were observed in eastern Colorado on volunteer plants of pinto bean cvs. UI 114 and UI 126 that grew from seed that remained in the field after harvest the previous season. Harvested aeciospores were viable and produced typical reddish-brown uredinia on unifoliolate leaves of UI 114 seedlings in the greenhouse. Evidence of bean rust overwintering has been confirmed in 10 years from 1989 to 2002 in eastern Colorado and the surrounding region. Overwintering conditions were reproduced at Fort Collins, CO in fall 1992 and spring 1993. Debris treatments had significantly higher disease incidence on stems, total number of lesions on stems, disease incidence on leaves, and total number of lesions on leaves of plants of pinto cvs. UI 114 and Olathe than plants without debris. Bean leaves of both cultivars had significantly higher disease incidence than stems. There also was an increased incidence of aecial infection for UI 114 seedlings that germinated through leaf debris with rust compared with stem debris under greenhouse conditions with abundant moisture. Bean leaf debris smaller than 0.36 mm in diameter resulted in significantly more aecial lesions on UI 114 than larger leaf debris and stem debris. Additional greenhouse experiments demonstrated that diverse collections of naturally occurring, overwintered, rust-infested bean debris from eastern Colorado produced different levels of pycnial and aecial infection on pinto cvs. UI 114, Olathe, and Chase. Chase, currently resistant to the uredinial stage of the prevalent bean rust races in Colorado and surrounding states, had a low incidence of aecial lesions on seedling stems when exposed to pycnial and aecial stages in the greenhouse. These observations indicate that selection of bean rust resistance genes should rely on multiple sources of resistant germ plasm to counter the potential increase in new races that could derive from sexual recombination in bean-production regions.
50
Brogowski, Zygmunt, and Danuta Czępińska-Kamińska. "The state of ionic balance in selected plant species from natural habitats of the Piska Primeval Forest (NE Poland)." Soil Science Annual 64, no. 4 (December 1, 2013): 151–57. http://dx.doi.org/10.2478/ssa-2013-0024.
Full textAbstract:
Abstract The objective of this paper was an attempt to estimate the impact of variable habitat conditions on the ionic state and ionic balance of selected species of plants occurring in an environment with scarce anthropogenic pressure in the Piska Primeval Forest, north-eastern Poland. The analysed mono- and dicotyledonous plants showed very high amounts of total nitrogen, exceeding sum of alkaline cations (Ca2+, Mg2+, K+, Na+), particularly at poor natural habitats (Sphagno-girgensohni-Picetum and Pino-Quercetum communities). Lack of alkaline cations is probably compensated by nitrogen in the form of NH4+, therefore maintaining the ionic balance of cations and anions in plants. Plants inhabiting habitats such as the Tilio-Carpinetum community show very high amounts of potassium. Some potassium radioactivity is probably indispensable for the physiological processes in plants instead of solar radiation