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Dissertations / Theses on the topic 'Plants, Effect of nitrogen on'

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Published: 4 June 2021
Last updated: 31 January 2023

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1

Zhou, Maoqian 1961. "Nitrogen fixation by alfalfa as affected by salt stress and nitrogen levels." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277231.

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The growth and Nitrogen fixation by one low salt tolerant alfalfa (Medicago sativa L.) and two germination salt tolerant selections inoculated with were investigated at two salt levels (0, -0.6 Mpa) and two N rates (1, 5ppm) using a system which automatically recirculates a nutrient solution. The high level of salinity (-0.6 Mpa osmotic potential of culture solution) resulted in substantial reduction in the N fixation percentage and total fixed N. The effect of salinity was more pronounced for later cuttings than for the earlier cutting. The N fixation percentages were substantially decreased
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2

Abraham, Trevor Ian. "Photosynthetic and growth response of C₃ and C₄ subspecies of Alloteropsis semialata to nitrogen-supply." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1003750.

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The greater photosynthetic nitrogen use efficiency (PNUE) of C4 compared with C3 plants may explain the relative success of C4 grasses in nutrient poor environments. This study compared the responses in photosynthetic parameters, leaf nitrogen and biomass allocation between the C3 and C4 subspecies of Alloteropsis semialata supplied soil nitrogen at three levels. Photosynthesis was assessed by means of CO2 response curves and the leaf nitrogen content assayed. Plants were destructively harvested, leaf areas determined and the dry biomass of functional plant components was measured. Results con
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3

Cepeda, Jose de los Angeles 1955. "Nitrogen fixation by alfalfa as affected by osmotic potentials and measured by nitrogen-15 techniques." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276591.

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One low salt tolerant alfalfa (Medicago sativa L.) cultivar and two germination salt tolerant alfalfa selections were compared for growth and N fixation at four salinity levels (0, -0.3, -0.6 and -1.2 Mpa). In the first experiment a Hoagland's solution at 5 ppm-N was used; in the second experiment the solution had a 1 ppm-N concentration and supplemental light was used. No significant differences were found among the cultivars. This provides additional support that germination salt tolerance is not necessarily related to salt tolerance for growth. Nitrogen fixed to the first harvest was 61, 48
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4

Papadopoulos, Anastasios K. "Nitrogen and moisture distributions under subirrigated soybeans." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55520.

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A field lysimeter experiment was conducted on a sandy loam soil during the 1990 and 1991 growing seasons. The experiment tested the effects of different watertables on soybean yields, and on moisture distribution and nitrogen concentration of the soil profile. The watertable depths were 40, 60, 80, and 100 centimeters (cm).<br>Yields were measured in terms of number of beans per plant, number of pods per plant, number of beans per pod, and seed protein content at harvest.<br>Soil samples collected at depths of 30 and 70 cm from the soil surface were analyzed for moisture content and NO$ sb3 sp
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5

Campos, Felipe Girotto [UNESP]. "Annona emarginata (Schltdl.) H. Rainer 'araticum-de-terra-fria' cultivada com variação de nitrogênio: produtividade e perfil químico dos voláteis foliares." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/127598.

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Made available in DSpace on 2015-09-17T15:24:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-07-31. Added 1 bitstream(s) on 2015-09-17T15:47:48Z : No. of bitstreams: 1 000846843.pdf: 2165230 bytes, checksum: ab9198f9a55c917b25a89ffa7ed83969 (MD5)<br>A espécie Annona emarginata (Schltdl.) H. Rainer 'araticum-de-terra-fria' possui grande potencial como porta-enxerto para o híbrido atemoia (Annona cherimola Mill. x Annona squamosa L.), conferindo resistência contra a broca do tronco, característica dependente de seus metabolismos primário e secundário. O nitrogênio é um elemento essen
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6

Campos, Felipe Girotto 1989. "Annona emarginata (Schltdl.) H. Rainer 'araticum-de-terra-fria' cultivada com variação de nitrogênio: produtividade e perfil químico dos voláteis foliares /." Botucatu, 2014. http://hdl.handle.net/11449/127598.

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Orientador: Carmen Sílvia Fernandes Boaro<br>Banca: Gisela Ferreira<br>Banca: Ivan de La Cruz Chacón<br>Resumo: A espécie Annona emarginata (Schltdl.) H. Rainer 'araticum-de-terra-fria' possui grande potencial como porta-enxerto para o híbrido atemoia (Annona cherimola Mill. x Annona squamosa L.), conferindo resistência contra a broca do tronco, característica dependente de seus metabolismos primário e secundário. O nitrogênio é um elemento essencial na síntese de aminoácidos, proteínas, entre elas, a Ribulose 1,5 - difosfato (Rubisco), ácidos nucleicos, clorofila e metabolitos secundários, en
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7

Anderson, Annette. "The effects of acetolactate synthase (ALS) inhibiting herbicides on the growth, yield, nodulation and nitrogen fixation of selected legumes." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09pha545.pdf.

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Bibliography: leaves 251-268. The main aim of this thesis is to determine the effects of sulfonylurea residues and in-crop usage of selected ALS-inhibiting herbicides on the growth, yield, nodulation and nitrogen fixation of legumes under alkaline conditions. Reviews literature concerning ALS-inhibiting herbicides, nitrogen fixation and the effects of herbicides on legumes, rhizobia, nodulation and nitrogen fixation; Glasshouse trial investigating the effects of flumetsulam on biomass and nodulation of chickpea; Field trail investigating the effects of sulfonylurea residues and 'in crop' usage
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8

Al-Rawahy, Salim Ali. "Nitrogen uptake, growth rate and yield of tomatoes under saline conditions." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184894.

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Results of two studies are reported here, a greenhouse study and a field study. In the greenhouse study, dry matter yield and nitrogen (total and 15N) uptake of leaves, stems and roots of tomato plants (Lycopersicum esculentum Mill., cv. Columbia) subjected to saline stress by NaCl were studied. The integrated effects of responses of these tissues to salinity on the whole plant basis and levels of Na⁺, Cl⁻ and K⁺ accumulation in these tissues were also studied. The treatments consisted of low (control, 0.3 bar), medium (4.3 bars), and high (8.3 bars) salinity. The saline treatments were prepar
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9

Ayub, Najma. "The effect of VAM inoculation on interplant ¹⁵N transfer." Thesis, University of Aberdeen, 1991. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU546184.

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This thesis reports a study carried out to investigate the involvement of VA mycorrhizas in interplant 15N transfer in a model pasture system and in a model agroforestry system. Two pot experiments were designed to investigate the effect of VAM inoculation on 15N transfer from clover to rye grass in sterile (in the first experiment the sterilisation was by autoclaving and in the second, by gamma-irradiation) and fresh soil. A third pot experiment was designed to investigate the effect of VAM inoculation on 15N transfer from grass and clover to wild cherry seedlings in fresh soil. For these pot
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10

Antunes, Cristiane Leite [UNESP]. "Fertirrigação nitrogenada por gotejamento e época de aplicação foliar de ácido giberélico 'GA IND.3' em alface americana (Lactuca sativa L.)." Universidade Estadual Paulista (UNESP), 2001. http://hdl.handle.net/11449/93828.

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Made available in DSpace on 2014-06-11T19:26:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-01-31Bitstream added on 2014-06-13T20:34:45Z : No. of bitstreams: 1 antunes_cl_me_botfca.pdf: 3224894 bytes, checksum: ebe83c98cf65dede1137b2f26b044f56 (MD5)<br>Com o objetivo de avaliar os efeitos do nitrogênio aplicado ao solo, via fertirrigação por gotejamento, e a aplicação foliar do ácido giberélico (GA3), na nutrição e nos componentes de produção da alface tipo americana, cv. 'Lucy Brown', em cultivo protegido, foi efetuado o presente trabalho. O delineamento experimental utilizado fo
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11

Darwiche, Amal Omar 1964. "Effect of cytokinin, gibberellin, and nitrogen applications on the growth of eldarica pine seedlings." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/276979.

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A greenhouse experiment was conducted over a ninety day period to test the effect of different nitrogen fertilizer regimes and several application rates of compounds with gibberellin and cytokinin activity (GA4/7 and BA, respectively) on the growth and development of Pinus brutia var. eldarica. Nitrogen produced no significant effects and this was attributed to its abundance in the potting medium, to begin with. All levels of growth regulators used showed a highly significant effect on vegetative development. A reduction in root collar diameter, shoot elongation, needle nitrogen content and ov
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12

Schievenin, Dimitrio Fernandes 1989. "Regeneração natural sob talhões puros de espécies nativas com diferentes atributos funcionais /." Botucatu, 2016. http://hdl.handle.net/11449/138942.

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Orientador: Vera Lex Engel<br>Banca: Antonio Carlos Galvão de Melo<br>Banca: Giselda Durigan<br>Resumo: A facilitação e a inibição da regeneração natural por plantações florestais já foram demonstradas em regiões tropicais. Os mecanismos de facilitação e a influência das espécies plantadas na trajetória do sistema em regeneração, no entanto, ainda não estão completamente elucidados. Objetivou-se neste estudo investigar se, a partir das características funcionais das espécies do dossel, há diferenças nos processos de colonização do sub-bosque. O estudo foi realizado na região central do Estado
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13

Kana'n, Ghassan Jadou Mousa. "Molecular studies of genes required for nitrate assimilation in fungi and higher plants." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/14338.

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Nitrate assimilation is an extremely important part of the nitrogen cycle and is carried out by most bacteria, fungi and plants. A relatively short catalytic pathway reduces nitrate to nitrite (via nitrate reductase activity) and then nitrite to ammonium ions (via nitrite reductase activity) which are converted into organic nitrogen by further metabolic pathways. A considerable amount of information is known about the biochemistry, genetics and recently, the molecular biology of these two enzymes. Much less is known about the transport of nitrate and nitrite into cells as well as the synthesis
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14

Foroutan-Pour, Kayhan. "Aspects of barley post-anthesis nitrogen physiology." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22730.

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The protein concentration of cereal grains is low and the production of cereal crops with increased grain protein concentrations is desirable. This work investigates the physiological aspects of protein accumulation potential in barley grain. A recently developed perfusion system was used in four experiments conducted in 1993 and 1994. In the field experiment, plants were allowed to take up urea at 15 or 30 mM N, or ethephon at 15 $ mu$ M. Abscisic acid and 2,4-D decreased total seed weight spike$ sp{-1}$. Gibberellic acid and 2,4-D increased seed protein concentration and content, while ABA d
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15

Tolman, Deborah A. "The influence of plant age and nitrogen rate on nutrient removal from the container medium solution." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/91106.

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Adequate nutrient supply to the medium solution of container-grown crops is a major concern to container plant production practices. The extent to which nutrients are removed by the plant from the medium solution of a container, however, has never been demonstrated. Mariogold, Tagetes erecta ‘Inca’ seeds were glasshouse-grown in 500 cc plastic pots containing 1 peat: 1 perlite (v/v) medium and fertilized daily with 200 ppm N as ammonium nitrate. Thirty, 35, 40, 45 and 50 day old plants were subjected to either 20, SO, 80 or 110 ppm N. Medium solutions were tested at hour 0 and 6, and analyzed
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16

Nelson, J. M., D. A. Dierig, and G. L. Hart. "Effect of Planting Date, Nitrogen Fertility and Postemergence Herbicides on Lesquerella Production." College of Agriculture, University of Arizona (Tucson, AZ), 1994. http://hdl.handle.net/10150/201436.

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Lesquerella is a potential crop plant that produces seeds containing hydroxy fatty acids similar to those in castor beans. An important step in the commercialization of this plant for Arizona farms is the development of an efficient agronomic production system. Research on cultural practices for lesquerella was conducted during the 1991-92 and 1992-93 seasons. Results of planting date experiments indicate that early fall planting dates are superior to late fall or winter dates in terms of dry matter production and seed yield. Lesquerella produced a marked response to nitrogen (N) in tests comp
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17

Yu, Shaobing. "Winter wheat nitrogen management in south coastal British Columbia." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29888.

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Nitrogen is essential to obtain high yields of winter wheat in south coastal British Columbia, which includes Vancouver Island and the lower Fraser Valley. An accurate recommendation for N application is required to keep input costs down for most economical returns and to limit environmental problems related to leaching of excess N. The questions are how much, when and which form of N should be applied to winter wheat. The general objective of this study is to improve our understanding of winter wheat growth and N uptake. This study monitors the soil N supply and characterizes the plant develo
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18

McGriff, Terry Lee 1952. "Nitrogen fertility studies on the buffalo gourd (Cucurbita foetidissima) grown as an annual root crop." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277132.

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A fertility study was initiated at the Maricopa Agricultural Center in 1984 to determine how nitrogen levels influenced growth, development, and root yield of the potential domesticate, buffalo gourd (Cucurbita foetidissima). Nitrogen had little or no effect upon the following parameters: seedling emergence, early growth rates, specific leaf weights, individual root weights, consumptive water use, canopy organic N content, and nitrate and ash content of all organs. Percent root dry matter and total carbohydrate content dropped linearly as N was increased, whereas canopy dry matter production,
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19

Ward, Michael Patrick. "Biochemistry, genetics and molecular biology of nitrite reduction in barley." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/14341.

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Nitrite reduction is the third step of the nitrate assimilation pathway in higher plants and is catalysed by nitrite reductase. The whole-plant barley mutants STA1010, STA2760 and STA4169 accumulate nitrite in the leaf after treatment with nitrate and, like the nir1 mutant STA3999 (Duncanson et al, 1993), lack detectable nitrite reductase cross-reacting material in the leaf and root. STA1010, STA2760 and STA4169 carry a recessive mutation in a single nuclear gene, identified as the Nir1 locus. RFLP analysis of the nir1 mutant STA3999 has allowed the Nir1 locus to be mapped to within 0.3cM of t
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20

Fajri, Abolhassan. "Nitrogen fixation by pasture legumes : effects of herbicides and defoliation." Title page, table of contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phf1755.pdf.

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Bibliography: leaves 209-254. Experiments detailed in this thesis, evaluate the impact of various herbicides and herbicide mixtures on the growth, nodulation and nitrogen fixation of annual pasture legumes, the efficacy of the herbicides for weed control, and the potential role of mechanical defoliation to replace herbicides, leading to lower cost and more sustainable farming systems.
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21

Antunes, Cristiane Leite. "Fertirrigação nitrogenada por gotejamento e época de aplicação foliar de ácido giberélico 'GA IND.3' em alface americana (Lactuca sativa L.) /." Botucatu : [s.n.], 2001. http://hdl.handle.net/11449/93828.

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Orientador: Antônio de Pádua Sousa<br>Banca: Roberto Lyra Villas Bôas<br>Banca: Tarlei Arriel Botrel<br>Resumo: Com o objetivo de avaliar os efeitos do nitrogênio aplicado ao solo, via fertirrigação por gotejamento, e a aplicação foliar do ácido giberélico (GA3), na nutrição e nos componentes de produção da alface tipo americana, cv. 'Lucy Brown', em cultivo protegido, foi efetuado o presente trabalho. O delineamento experimental utilizado foi o de blocos casualizados em esquema de parcelas subdivididas: quatro doses de nitrogênio (60, 120, 180 e 240 kg de N.ha-1), na parcela, e quatro épocas
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22

Jablonski, Leanne M. "Reproductive response to elevated CO2 : the roles of vegetative carbon storage, nitrogen and seed traits." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34646.

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This study focused on the reproductive response to elevated CO2 of plants possessing below-ground storage. I tested the hypotheses that under elevated CO2: (1) Plants with greater non-foliar storage capacity win show more reproductive response and (2) The altered foliar physiology of carbon (C) and nitrogen (N) use will cause increases in seed number and quality. Carbon dioxide treatments of High (650 muL L-1) and Ambient (360 muL L-1) were used in a controlled environment, simulated growing season, and in a natural pasture community. Hypothesis 1 was tested experimentally using four Raphanus
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23

Rocha, Kassiano Felipe 1989. "Dinâmica do nitrogênio em rotações de forrageiras com milho /." Botucatu, 2017. http://hdl.handle.net/11449/152127.

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Orientador: Ciro Antonio Rosolem<br>Banca: Luis Ignacio Prochnow<br>Banca: José Antonio Quaggio<br>Banca: Heitor Cantarella<br>Banca: Eduardo Mariano<br>Resumo: Forrageiras do gênero Urochloa podem alterar a dinâmica do N no solo, afetando processos microbiológicos do ciclo do N, sua disponibilidade no solo e perdas no sistema. O objetivo do trabalho foi avaliar o efeito do cultivo de Urochloa ruziziensis, Urochloa brizantha e Panicum maximum na dinâmica do N no solo, ou seja, potencial de nitrificação, atividade de microrganismos amonificantes, nitrificantes e fixadores de N, bem como possíve
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24

Lotfollahi, Mohammad. "The effect of subsoil mineral nitrogen on grain protein concentration of wheat." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phl882.pdf.

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Copy of author's previously published work inserted. Bibliography: leaves 147-189. This project examines the uptake of mineral N from the subsoil after anthesis and its effect on grain protein concentration (GPC) of wheat. The overall objective is to examine the importance of subsoil mineral N and to investigate the ability of wheat to take up N from the subsoil late in the season under different conditions of N supply and soil water availability. Greenhouse experiments investigate the importance of subsoil mineral N availability on GPC of wheat and the factors that contribute to the effective
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25

Sena, Virley Gardeny Lima. "Sequestro de carbono e eficiência do uso de nutrientes pelo milho em plantio direto sobre palha de leguminosas arbóreas /." Botucatu, 2019. http://hdl.handle.net/11449/182276.

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Orientador: Juliano Carlos Calonego<br>Coorientador: Emanoel Gomes de Moura<br>Banca: João Paulo Gonsiorkiewicz Rigon<br>Banca: Gustavo Pavan Mateus<br>Banca: Iraê Amaral Guerrini<br>Banca: Emerson Guerrini<br>Resumo: Nas proximidades da região amazônica, trópico úmido maranhense, sobretudo na região centro norte do Estado, há condições edafoclimáticas que divergem de outras regiões do Brasil e impossibilitam o avanço da agricultura. A elevada pluviosidade somada às altas temperaturas em solos altamente intemperizados, predispostos a coesão e de baixa fertilidade natural dificultam o uso de té
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26

Candian, Joara Secchi 1991. "Doses e épocas de aplicação de torta de mamona na produção, características físico-químicas e teores de macronutrientes em couve-flor sob manejo orgânico /." Botucatu, 2018. http://hdl.handle.net/11449/153788.

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Orientador: Antonio Ismael Inácio Cardoso<br>Banca: Roberto Lyra Villas Bôas<br>Banca: Santino Seabra Júnior<br>Banca: Pedro Jovchelevich<br>Banca: Jackson Mirellys Azevêdo Souza<br>Resumo: A couve-flor, comparada a outras brássicas, é a mais exigente em solos férteis e com alto teor de matéria orgânica. O nitrogênio pode ser perdido facilmente no solo, seja por volatilização ou por lixiviação, sendo indicado que seu fornecimento ocorra juntamente com a aplicação de materiais ricos em matéria orgânica, parte no plantio e parte em cobertura. Diante do exposto, objetivou-se com este estudo avali
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27

Rawahy, Salim Ali 1951. "EFFECT OF SODIUM-CHLORIDE, SODIUM-SULFATE AND CALCIUM-CHLORIDE SALTS ON NITROGEN AND PHOSPHORUS UPTAKE BY TOMATO PLANTS (SALINITY, OSMOTIC PRESSURE, SPECIFIC ION EFFECT)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275527.

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28

Abranches, Jorge Luiz 1984. "Resposta da cultura do café arábica à aplicação de ureia revestida /." Botucatu, 2018. http://hdl.handle.net/11449/152971.

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Orientador: Rogério Peres Soratto<br>Coorientador: Marcos José Perdoná<br>Banca : Adriana Novais Martins<br>Banca : Marcelo de Almeida Silva<br>Resumo: Nas condições em que o café arábica (Coffea arabica L.) é cultivado no Brasil, o nitrogênio (N) é o elemento que mais limita as produções, em razão da alta demanda pela cultura e baixa disponibilidade, na maioria dos solos brasileiros, nesse elemento. Através do revestimento dos fertilizantes tradicionais, por resinas sintéticas, orgânicas ou inorgânicas, esses insumos tendem a liberar os nutrientes de forma lenta. Desta forma, uma possibilidad
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Stein, Chad M. "Post-fire vegetation in Sierran forests effects on nitrogen fixation, soil nitrogen availability, and water quality /." abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1438931.

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30

Ades, Dennis Raymond. "The role of iron nutrition in regulating patterns of photosynthesis and nitrogen metabolism in the green alga Scenedesmus quadricauda." PDXScholar, 1987. https://pdxscholar.library.pdx.edu/open_access_etds/3649.

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The influence of iron nutrition on patterns of photosynthetic behavior, nitrogen metabolism, and fixed-carbon allocation is reported for a common freshwater green alga. Cultures of Scenedesmus quadricauda were grown in Fraquil medium in which iron concentrations ranged from 1.0 μM to 0.01 μM (log 10-6 to 10-8 M, respectively). Carbon 14 and nitrogen uptake experiments were conducted at photosynthetically saturating and subsaturating photon flux densities.
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Brimecombe, Melissa Jane. "The effect of introduced Pseudomonas fluorescens strains on nitrogen dynamics in the rhizosphere of crop plants." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/842952/.

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The primary aim of this study was to investigate the effects of seed inoculation with the biocontrol agent Pseudomonas fluorescens strain F113 (producing the antibiotic DAPG) and its modified derivative strain F113G22 (with DAPG production disrupted) on the uptake of nitrogen by pea and wheat plants. Uptake of N by the two plant species was investigated in soil microcosms amended with 15N-labelled fertilisers (urea or ammonium nitrate) or 15N-labelled plant residues. Uptake of fertiliser-N was unaffected by inoculation. However, uptake of N derived from organic residues was enhanced in pea ino
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32

Torp, Mikaela. "The effect of snow on plants and their interactions with herbivores." Doctoral thesis, Umeå : Department of Ecology and Environmental Science, Umeå University, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-30444.

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33

Wang, Dan. "Effects of CO₂ and nitrogen on plant response to heat stress /." Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1225299873.

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Dissertation (Ph.D.)--University of Toledo, 2008.<br>Typescript. "Submitted as partial fulfillment of the requirements for The Doctor of Philosophy Degree in Biology (Ecology-track)." Bibliography: leaves 6-9, 29-35, 71-78, 111-118, 149-153.
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Malan, Michelle. "The effect of atmospheric nitrogen deposition on fynbos soils and plants in the Cape Town metropolitan area." Thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/26698.

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Gilabel, Amanda Prado 1991. "Co-inoculação de rhizobium e azospirillum e adubação nitrogenada na cultura do feijão comum /." Botucatu, 2018. http://hdl.handle.net/11449/152913.

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Orientador: Rogério Peres Soratto<br>Coorientador: Adalton Mazetti Fernandes<br>Banca: Dirceu Maximino Fernandes<br>Banca: José Lavres Junior<br>Resumo: Devido ao alto custo e baixa eficiência de aproveitamento dos fertilizantes nitrogenados pelas plantas, existe grande interesse em estratégias, como a fixação biológica de N2 (FBN), para a redução da aplicação de nitrogênio (N) inorgânico nas culturas. A co-inoculação consiste na combinação de bactérias do gênero Rhizobium (simbióticas) com as do gênero Azospirillum (associativas), aos quais podem produzir efeito sinérgico proporcionando resul
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Grohskopf, Marco André 1988. "Interação entre fósforo e nitrogênio em fertilizante organomineral /." Botucatu, 2017. http://hdl.handle.net/11449/152480.

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Orientador: Dirceu Maximino Fernandes<br>Coorientador: Juliano Corulli Corrêa<br>Banca: Roberto Lyra Villas Bôas<br>Banca: Juliano Carlos Calonego<br>Banca: Paulo Cesar Teixeira<br>Banca: Rosemary Marques de Almeida Bertani<br>Resumo: A adubação é dentre as práticas agrícolas a de maior relevância para estabelecer novos patamares de produção, com ênfase para as inovações em fertilizantes. O objetivo do trabalho foi avaliar o efeito da interação entre fósforo (P) e nitrogênio (N) em fertilizante organomineral a base de cama de aves no sistema solo-planta em Latossolo Vermelho Distroférrico. Trê
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Beche, Eduardo. "Caracteres agronômicos e fisiológicos associados ao progresso do melhoramento genético de trigo no Brasil." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/465.

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CNPq<br>Conhecer os processos responsáveis pelo avanço do progresso genético do rendimento de grãos é uma etapa essencial para o desenvolvimento de cultivares mais produtivas. Os objetivos do estudo foram: a) Avaliar a duração dos subperíodos de desenvolvimento de cultivares de trigo brasileiros, lançados entre 1940 e 2009, e quantificar a importância de cada fenofase sobre o rendimento de grãos e seus componentes. b) Caracterizar, fisiologica e agronomicamente, cultivares de trigo desenvolvidos entre 1940 e 2009, a fim de identificar critérios de seleção mais efetivos à continuidade do progre
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Pivetta, Laércio Augusto [UNESP]. "Ciclagem do nitrogênio relacionada ao sistema de produção." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/132163.

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Made available in DSpace on 2015-12-10T14:24:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-02-27. Added 1 bitstream(s) on 2015-12-10T14:30:29Z : No. of bitstreams: 1 000851992.pdf: 1315382 bytes, checksum: f1e0b3c6239228aceaa5d9a87e506ffa (MD5)<br>O conhecimento de como o manejo do solo influencia na dinâmica do nitrogênio (N) em longo prazo pode fornecer bases para desenvolver sistemas de produção que otimizem a ciclagem deste nutriente. Objetivou-se com este trabalho avaliar o efeito de sistemas de manejo, com plantas de cobertura e escarificação, em rotação com a cultura da so
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Pivetta, Laercio Augusto 1986. "Ciclagem do nitrogênio relacionada ao sistema de produção /." Botucatu, 2015. http://hdl.handle.net/11449/132163.

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Orientador: Ciro Antonio Rosolem<br>Banca: Rogerio Peres Soratto<br>Banca: Monica Sarolli Silva de Mendonça Costa<br>Banca: André Cesar Vitti<br>Banca: Paulo César Ocheuze Trivelin<br>Resumo: O conhecimento de como o manejo do solo influencia na dinâmica do nitrogênio (N) em longo prazo pode fornecer bases para desenvolver sistemas de produção que otimizem a ciclagem deste nutriente. Objetivou-se com este trabalho avaliar o efeito de sistemas de manejo, com plantas de cobertura e escarificação, em rotação com a cultura da soja, no balanço e ciclagem do N e na produtividade da soja. O experimen
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Horner, Emily Renee. "THE EFFECT OF NITROGEN APPLICATION TIMING ON PLANT AVAILABLE PHOSPHORUS." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211932436.

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Tavares, Ana Emília Barbosa 1983. "Manejo da adubação nitrogenada na produção e qualidade de frutos e sementes de abobrinha-de-moita /." Botucatu, 2018. http://hdl.handle.net/11449/154382.

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Orientador: Antonio Ismael Inácio Cardoso<br>Banca: João Nakagawa<br>Banca: Hélio Grassi Filho<br>Banca: Cristiaini Kano<br>Banca: Pâmela Gomes Nakada Freitas<br>Resumo: Objetivou-se avaliar o efeito de doses e parcelamentos da adubação nitrogenada em cobertura na produção e teor de macronutrientes de frutos imaturos de abobrinha-demoita. Foram conduzidos dois experimentos, com treze tratamentos, no esquema fatorial 4x3+1, com quatro doses de nitrogênio em cobertura (62,5; 125,0; 187,5; 250,0 kg ha-1 de N), três parcelamentos (1 6 ⁄ + 1 3 ⁄ + 1 2 ⁄ ; 1 4 ⁄ + 1 2 ⁄ + 1 4 ⁄ e 1 3 ⁄ + 1 3 ⁄ + 1 3
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42

Kraaij, Tineke. "Effects of rain, nitrogen, fire and grazing on bush encroachment in semi-arid savanna, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52817.

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Thesis (MScFor)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: Increases in woody plant density ('bush encroachment') reduce livestock production and biodiversity. By convention, soil moisture, soil nutrients, fire and herbivory are regarded as the principal factors governing the tree-grass ratio of savannas. An experiment with a completely-crossed design was employed to investigate woody seedling (Acacia me/lifera) recruitment near Kimberley, Northern Cape, South Africa, after fire and under conditions of maximum-recorded rainfall, nitrogen addition and grazing. The field experiment
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43

Caglia, Stefania. "Nitrogen Removal in the Pilot Plant ITEST (Increased Technology in Sewage Treatment)." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171846.

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Regions with a cold winter, as in the Baltic countries, have a problem to meet the nitrogen requirement in the Urban Wastewater Treatment Directive 98/15/EC. Especially in the winter season, the temperature of the influent wastewater could arrive also below 10°C and this delays the biological processes that takes place in the wastewater treatment. With the decrease of the temperature, the efficiency of nitrogen removal in the system decreases and leads to a high nitrogen loading in the effluent. The ITEST (Increased Technology and Efficiency in Sewage Treatment) project situated in Hammarby Sj
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Lopes, Iza Paula de Carvalho. "Indicadores do estado de nitrogênio da planta, produtividade e biofortificação de tubérculos de batata influenciados por doses de sulfato de magnésio." Universidade Federal de Viçosa, 2014. http://locus.ufv.br/handle/123456789/4636.

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Made available in DSpace on 2015-03-26T13:40:03Z (GMT). No. of bitstreams: 1 texto completo.pdf: 866222 bytes, checksum: cbdbded2850cc1ef6103484fe1a6ca43 (MD5) Previous issue date: 2014-07-18<br>Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>The aim of this study was to evaluate the effect of magnesium sulphate (MgSO4.7H2O) rates on potato nitrogen status indicators and tuber yield, biofortification, greening and sprouting, Agata cultivar. The experiment was carried out on the field of Universidade Federal de Viçosa from June 7 to September 23th, 2013. The treatments consisted of
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Gould, R. P. "The effects of gaseous sulphur dioxide and nitrogen dioxide on carbon allocation in plants." Thesis, Lancaster University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377896.

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Fernandes, Fabiana Morbi. "Estimativa da necessidade de nitrogênio na cultura da batata com base no índice relativo de clorofila /." Botucatu, 2017. http://hdl.handle.net/11449/151369.

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Orientador: Rogério Peres Soratto<br>Coorientador: Adalton Mazetti Fernandes<br>Banca: Dirceu Maximino Fernandes<br>Banca: José Magno Queiroz Luz<br>Resumo: O nitrogênio (N) é um dos nutrientes extraídos em maior quantidade pela batateira e tem grande impacto no desempenho dessa cultura. A resposta da cultura da batata à adubação nitrogenada é dependente de diversos fatores, o que torna essencial o manejo correto do N, maximizando assim a absorção deste pela planta. Além disso, a aplicação de doses insuficientes ou demasiadamente elevadas de N pode reduzir a produtividade e a qualidade dos tub
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47

Ferreira, Tamires Esther 1988. "Decomposição da palha de cana-de-açúcar em área de recolhimento variável sob adubação nitrogenada mineral ou inoculação com bactérias diazotróficas /." Botucatu, 2017. http://hdl.handle.net/11449/151920.

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Orientador: Carlos Alexandre Costa Crusciol<br>Coorientador: Nilza Patricia Ramos<br>Banca: Cristinano Alberto de Andrade<br>Banca: Raffaela Rossetto<br>Resumo: A operação de recolhimento da palha de cana-de-açúcar trouxe a oportunidade ímpar de agregar sustentabilidade e renda extra ao setor sucroalcooleiro. Com isto, dúvidas surgiram sobre os efeitos que esta prática ocasionaria ao sistema solo-planta, e quais seriam as necessidades de alteração nas práticas de manejo, principalmente quando se trata da adubação nitrogenada, além de permitir a exploração de tecnologia pouco explorada, como a
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Ottman, M. J., T. A. Doerge, and E. C. Martin. "Late Season Water and Nitrogen Effects on Durum Quality, 1995 (Preliminary)." College of Agriculture, University of Arizona (Tucson, AZ), 1995. http://hdl.handle.net/10150/201443.

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Durum grain quality is affected by many factors, but water and nitrogen are factors that the grower can control. The purpose of this research was to determine 1) the nitrogen application rate required at pollen shed to maintain adequate grain protein levels if irrigation is excessive or deficient during grain fill and 2) if nitrogen applications during grain fill can elevate grain protein. Field research was conducted at the Maricopa Agricultural Center using the durum varieties Duraking, Minos, and Turbo. The field was treated uniformly until pollen shed when nitrogen was applied at rates of
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Wang, Guangyao (Sam), Kevin Brunson, Kelly Thorp, and Mike Ottman. "Cultivar and Nitrogen Effects on Yield and Grain Protein in Irrigated Durum Wheat, 2012." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2013. http://hdl.handle.net/10150/312150.

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The grain yield and nitrogen use efficiency of durum wheat vary in response to genotypic and nitrogen fertilization were studied in field during two growth seasons. The aim of this study was to evaluate the effects the N fertilizer rate on grain yield and quality under irrigated desert conditions in relation to N utilization. Six durum wheat cultivars (Duraking, Havasu, Kronos, Ocotillo, Orita, Topper) were grown in field trails under irrigated regimes at five N levels (0, 65, 110, 160, 240 lbs/acre) in 2010-2011 and six N levels (0, 65, 110, 160, 240, 360 kg ha-1) in 2011-2012 at Maricopa Ag
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Haselbauer, Franciele Rechembach. "Produtividade da aveia branca cv. IPR 126 submetida à níveis e formas de parcelamento de nitrogênio em cobertura, com e sem cortes." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2653.

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CAPES<br>A intensificação da produção em sistemas integrados de produção, basifica-se na sustentabilidade do mesmo, buscando os melhores arranjos para sustentação de bons resultados. A adubação é de extrema importância para o sucesso na produtividade, sendo a nitrogenada que requer maior atenção na produção, principalmente, de gramíneas. No cultivo de pastagens muitas vezes há um negligenciamento na adubação, sendo maior quando se trata para cobertura. Com base nesta premissa, o trabalho tem o objetivo de encontrar uma resposta para a adubação nitrogenada aplicada na aveia branca, bem como se
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