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Journal articles on the topic 'Agronomic measurements'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Schmitz, Peder K., and Hans J. Kandel. "Using Canopy Measurements to Predict Soybean Seed Yield." Remote Sensing 13, no. 16 (2021): 3260. http://dx.doi.org/10.3390/rs13163260.

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Predicting soybean [Glycine max (L.) Merr.] seed yield is of interest for crop producers to make important agronomic and economic decisions. Evaluating the soybean canopy across a range of common agronomic practices, using canopy measurements, provides a large inference for soybean producers. The individual and synergistic relationships between fractional green canopy cover (FGCC), photosynthetically active radiation (PAR) interception, and a normalized difference vegetative index (NDVI) measurements taken throughout the growing season to predict soybean seed yield in North Dakota, USA, were i

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Mohammadi, Mohammadreza, John Finnan, Mark Sterling, and Chris Baker. "A calibrated oat lodging model compared with agronomic measurements." Field Crops Research 255 (September 2020): 107784. http://dx.doi.org/10.1016/j.fcr.2020.107784.

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3

Enciso, Juan, Carlos A. Avila, Jinha Jung, et al. "Validation of agronomic UAV and field measurements for tomato varieties." Computers and Electronics in Agriculture 158 (March 2019): 278–83. http://dx.doi.org/10.1016/j.compag.2019.02.011.

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HOCKETT, E. A. "RELATIONSHIP OF ADVENTITIOUS ROOTS AND AGRONOMIC CHARACTERISTICS IN BARLEY." Canadian Journal of Plant Science 66, no. 2 (1986): 257–80. http://dx.doi.org/10.4141/cjps86-040.

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The number of adventitious roots of two- and six-row barleys (Hordeum vulgare L.) grown under irrigation at Bozeman, Montana in 1970 and 1971, was related to yield and other agronomic characteristics. Adventitious roots were counted shortly before heading and at maturity and correlated with 15 agronomic characteristics. Adventitious root number was not correlated with yield of barley, except for two out of six cases in two-row barley. Roots per tiller, per plant and per square metre were all positively correlated with each other. The number of kernels per spike increased as roots per tiller in

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Duru, Michel, Pablo Cruz, and Jean Pierre Theau. "A simplified method for characterising agronomic services provided by species-rich grasslands." Crop and Pasture Science 61, no. 5 (2010): 420. http://dx.doi.org/10.1071/cp09296.

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In order to encourage farmers and their advisors to promote species-rich grasslands, the agronomic services they can provide should be demonstrated. Methods based on functional ecology are promising, but difficult to use in an applied context. Thus, we aimed to construct a simplified method, tailored for non-researchers, for assessing grassland agronomic services. We assess them by focusing on the grass species that was coupled to a leaf dry matter content (LDMC) database. These simplifications are supported by several hypotheses tested in our paper: (i) trade-offs between agronomic properties

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Edenborn, S. L., A. J. Sexstone, Y. Sutanto, and J. A. Chapman. "Relationships among Contrasting Measurements of Microbial Dynamics in Pasture and Organic Farm Soils." Applied and Environmental Soil Science 2011 (2011): 1–10. http://dx.doi.org/10.1155/2011/537459.

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Soil bacteria exhibit short-term variations in community structure, providing an indication of anthropogenic disturbances. In this study, microbial biomass carbon (MBC), potentially mineralizable nitrogen (PMN), community level physiological profiling (CLPP), and culture-dependent DGGE (CD DGGE) fingerprinting of the 16S rRNA gene were used to compare microbial communities in organic farm and pasture soils subjected to differing agronomic treatments. Correlation analyses revealed significant relationships between MBC, PMN, and data derived from microbial community analyses. All measures separa

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Barmeier, Gero, Bodo Mistele, and Urs Schmidhalter. "Referencing laser and ultrasonic height measurements of barleycultivars by using a herbometre as standard." Crop and Pasture Science 67, no. 12 (2016): 1215. http://dx.doi.org/10.1071/cp16238.

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Assessment of plant height is an important factor for agronomic and breeder decisions; however, current field phenotyping, such as visual scoring or using a ruler, is time consuming, labour intensive, costly and subjective. For agronomists and plant breeders, the most common method used to measure plant height is still a meter stick. In a 3-year study, we have adopted a herbometre similar to a rising plate meter as a reference method to obtain the weighted plant height of barley cultivars and to evaluate vehicle-based ultrasonic and laser distance sensors. Sets of 30 spring barley cultivars an

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GARNSWORTHY, P. C., J. WISEMAN, and K. FEGEROS. "Prediction of chemical, nutritive and agronomic characteristics of wheat by near infrared spectroscopy." Journal of Agricultural Science 135, no. 4 (2000): 409–17. http://dx.doi.org/10.1017/s0021859699008382.

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Near infrared spectroscopy (NIRS) is widely used in the flour milling industry for rapid determination of moisture and protein in wheat. However, these measurements give little indication of the nutritive value of wheat when fed to poultry or pigs. Accurate estimates of nutritive value require specialist facilities and are time-consuming and costly. Accordingly, prediction from chemical or NIRS measurements would be of some considerable benefit. In the current study 160 samples of wheat, representing 24 different varieties, were used to generate NIRS calibration equations for chemical, nutriti

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Vitharana, U. W. A., M. Van Meirvenne, D. Simpson, L. Cockx, and G. Hofman. "Agronomic consequences of potential management zones delineated on the basis of EM38DD measurements." Near Surface Geophysics 6, no. 5 (2007): 289–96. http://dx.doi.org/10.3997/1873-0604.2008003.

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10

Sojka, R. E., G. A. Lehrsch, S. J. Kostka, et al. "Soil Water Measurements Relevant to Agronomic and Environmental Functions of Chemically Treated Soil." Journal of ASTM International 6, no. 1 (2009): 101497. http://dx.doi.org/10.1520/jai101497.

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11

Jogloy, S., J. C. Wynne, and M. K. Beute. "Inheritance of Late Leafspot Resistance and Agronomic Traits in Peanut1." Peanut Science 14, no. 2 (1987): 86–90. http://dx.doi.org/10.3146/i0095-3679-14-2-9.

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Abstract Twenty peanut (Arachis hypogaea L.) populations in F2 generation from an M x N mating design involving five late leafspot (Cercosporidium personatum)-resistant female parents and four adapted male parents were evaluated for late leafspot resistance with a detached leaf culture technique. Agronomic traits were evaluated in the field. Objectives were 1) to identify the best parent for agronomic traits and the best source of resistance to late leafspot, 2) determine the correlations among components of resistance, 3) determine the correlations of resistance and agronomic traits, and 4) e

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12

King, Graham J. "Progress of Apple Genetic Mapping in Europe." HortScience 30, no. 4 (1995): 749B—749. http://dx.doi.org/10.21273/hortsci.30.4.749b.

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The progress of the European Apple Genome Mapping Project will be described. Five populations segregating for a range of agronomic genes have been established in six European countries. Isozyme systems, RFLPs, RAPDs, and other PCR-based markers are being used to construct a unified genetic linkage map. Genotypic and phenotypic measurements have been precisely defined and standardized among participants. Phenotypic measurements for many agronomic traits are being replicated in different geographical locations over several years. Statistical and genetic analyses are aimed at defining components

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13

Adeniji, OT, PM Kusolwa, and SWOM Reuben. "Genetic diversity based on agronomic and fruit quality traits in gboma eggplant (Solanum macrocarpon L.)." Bangladesh Journal of Agricultural Research 43, no. 1 (2018): 25–38. http://dx.doi.org/10.3329/bjar.v43i1.36156.

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Solanum macrocarpon L is a fruit and leaf vegetable in sub-Sahara Africa. The genetic diversity of the crop remains largely unexploited consequently there is a dearth of genetic information on agronomic and fruit quality traits. Agronomic and fruit quality variability and association among traits were evaluated. Twenty – six accessions were grown in a randomized complete block design with three replications. Measurements taken on agronomic and fruit quality traits were subjected to a combined analysis of variance, Principal Component Analysis and grouping using Unweighted Pair Group Method Ari

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Nóbrega, Daiane Da Silva, José Ricardo Peixoto, Michelle Souza Vilela, et al. "Agronomic descriptors and ornamental potential of passion fruit species." Ornamental Horticulture 23, no. 3 (2017): 357. http://dx.doi.org/10.14295/oh.v23i3.1053.

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Brazil has great variability, being one of the centers of origin of the genus Passiflora. Passion fruit has a multiple and diversified uses, being little explored as an ornamental plant in the country. The objective of this work was to characterize four passion fruit genotypes (two hybrid materials from the experimental field of passion fruit breeding program of the University of Brasília, and two passion fruit cultivars - BRS Sertão Forte and BRS Mel do Cerrado, both of them from Brazil), based on official and validated morphoagronomic descriptors for the identification of morphological aspec

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Jensen, Manfred, Kerstin Linke, Andreas Dickhäuser, and G. Benno Feige. "The Effect of Agronomic Photosystem-II Herbicides on Lichens." Lichenologist 31, no. 1 (1999): 95–103. http://dx.doi.org/10.1006/lich.1998.0134.

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AbstractThe sensitivity of Hypogymnia physodes, Lobaria pulmonaria and Peltigera aphthosa to six photosystem II herbicides and to DBMIB was tested in the laboratory by chlorophyll fluorescence and oxygen-exchange measurements. In addition, experiments with freshly isolated photobiont cells from H. physodes and L. pulmonaria were performed. Generally, the lichens were most sensitive to the urea herbicides diuron and isoproturon, whereas the triazines atrazine, terbuthylazine, and simazine and the triazinone metamitron were less inhibitory. Among the three lichen species investigated, H. physode

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16

Hume, D. E., and J. C. Sewell. "Agronomic advantages conferred by endophyte infection of perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinacea Schreb.) in Australia." Crop and Pasture Science 65, no. 8 (2014): 747. http://dx.doi.org/10.1071/cp13383.

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Perennial ryegrass and tall fescue are key grasses of sown pastures in the high-rainfall zone of south-eastern Australia. Ryegrass in naturalised pastures, and in sown seed, is widely infected with Neotyphodium fungal endophytes, with toxic endophyte strains occasionally causing toxicosis in livestock. Endophyte infection is also beneficial in sown grasslands, assisting ryegrass hosts to overcome biotic stresses, and tall fescue hosts to overcome biotic and abiotic stresses. We review the literature for Australia and present new data, to examine the agronomic effects of endophyte. Frequency of

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17

Dhawale, N. M., V. I. Adamchuk, S. O. Prasher, P. R. L. Dutilleul, and R. B. Ferguson. "Spatially Constrained Geospatial Data Clustering for Multilayer Sensor-Based Measurements." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-2 (November 11, 2014): 187–90. http://dx.doi.org/10.5194/isprsarchives-xl-2-187-2014.

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One of the most popular approaches to process high-density proximal soil sensing data is to aggregate similar measurements representing unique field conditions. An innovative constraint-based spatial clustering algorithm has been developed. The algorithm seeks to minimize the mean squared error during the interactive grouping of spatially adjacent measurements similar to each other and different from the other parts of the field. After successful implementation of a one soil property scenario, this research was to accommodate multiple layers of soil properties representing the same area under

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18

Levitan, Nathaniel, and Barry Gross. "Utilizing Collocated Crop Growth Model Simulations to Train Agronomic Satellite Retrieval Algorithms." Remote Sensing 10, no. 12 (2018): 1968. http://dx.doi.org/10.3390/rs10121968.

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Due to its worldwide coverage and high revisit time, satellite-based remote sensing provides the ability to monitor in-season crop state variables and yields globally. In this study, we presented a novel approach to training agronomic satellite retrieval algorithms by utilizing collocated crop growth model simulations and solar-reflective satellite measurements. Specifically, we showed that bidirectional long short-term memory networks (BLSTMs) can be trained to predict the in-season state variables and yields of Agricultural Production Systems sIMulator (APSIM) maize crop growth model simulat

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19

Jedmowski, Christoph, Ahmed Ashoub, Osama Momtaz, and Wolfgang Brüggemann. "Impact of Drought, Heat, and Their Combination on Chlorophyll Fluorescence and Yield of Wild Barley (Hordeum spontaneum)." Journal of Botany 2015 (November 5, 2015): 1–9. http://dx.doi.org/10.1155/2015/120868.

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The impact of (long-term) drought acclimation and (short-term) heat stress and their combination on fast chlorophyll fluorescence induction curves (OJIP) and grain yield was tested using pot-grown plants of wild barley (Hordeum spontaneum) originating from Northern Egypt. Concerning agronomic traits, the main effect of drought was decreased biomass accumulation and grain yield, while heat specifically affected floral development. The treatments caused specific inhibitions of photosystem II (PSII) functionality. While heat stressed plants showed a reduction of maximum quantum efficiency of PSII

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20

Guenser, Josépha, Emilie Bourgade, Marc Vergnes, Thierry Dufourcq, and Séverine Mary. "Assessment of biodiversity and agronomic parameters in two Agroforestry vineyards." E3S Web of Conferences 50 (2018): 01013. http://dx.doi.org/10.1051/e3sconf/20185001013.

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Sustainability of agricultural production systems is nowadays considered as a major challenge to face. Viticulture is particularly affected by environmental issues, especially because of its consumption in pesticides. Besides, the social demand in environment-friendly products is increasing, and the reputation of wines produced under Protected Denomination of Origin (PDO) is also built on the specificity of natural characteristics and resources such as soil, which has to be preserved. Biodiversity loss is largely admitted among the scientific community, and landscape simplification is known as

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21

Easton, H. S., M. Z. Z. Jahufer, C. Flay, et al. "Environment and ryegrass genetics - multisite trial of advanced breeding populations." Journal of New Zealand Grasslands 77 (January 1, 2015): 233–38. http://dx.doi.org/10.33584/jnzg.2015.77.455.

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Developing a genomic selection (GS) strategy for ryegrass requires field data for training GS models and to gain insight into how ryegrass agronomic performance varies, within and among populations and across locations. Families from five perennial ryegrass breeding populations are being evaluated in eight trials in Northland, Waikato, Hawke's Bay, Manawatu and Canterbury to establish a data set for development of a genomic selection model. Statistically robust variances are evident among families within populations, both for visual scoring of herbage bulk and dry matter measurements. Multi-tr

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Fortuna, Ann-Marie, Patrick J. Starks, Amanda M. Nelson, and Jean L. Steiner. "Prediction of Soil Carbon Fractions Using a Field Spectroradiometer Equipped with an Illuminating Contact Probe." Soil Systems 3, no. 4 (2019): 71. http://dx.doi.org/10.3390/soilsystems3040071.

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This research compared the accuracy of laboratory reference measurements of soil C and N fractions with soil reflectance spectra acquired using a portable field spectroradiometer with an illuminating contact probe. Soil samples were taken from eight, 1.6 ha watersheds, located in El Reno, Oklahoma on native warm season grasslands and agronomic managements with landform complexes serving as replicates within and among treatments. Soil samples were taken from 0–30-cm. Measurements included total soil organic carbon (TSOC), total soil nitrogen (TSN), residual C of acid hydrolysis (RCAH), and part

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Wetzstein, Hazel Y., and S. Edward Law. "Measurements of Ambient Ozone Concentrations Show Elevated Levels within Commercial Greenhouses." HortScience 41, no. 4 (2006): 976B—976. http://dx.doi.org/10.21273/hortsci.41.4.976b.

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Ozone is a highly oxidizing phytotoxic air pollutant, whose effects are documented to adversely affect crop growth and productivity. In contrast to the large body of published work investigating the effects of atmospheric ozone on outdoor agronomic and forestry crops, relatively few studies have addressed the effects of ozone exposure on greenhouse-grown crops. Outdoor concentrations of ozone can commonly attain concentrations in the 50–150 ppb range, which are known to detrimentally impact plant growth. The objective of this study was to characterize ozone exposure in commercial greenhouses a

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Fenilli, Tatiele A. B., Klaus Reichart, Osny O. S. Bacchi, Paulo C. O. Trivelin, and Durval Dourado-Neto. "The 15N isotope to evaluate fertilizer nitrogen absorption efficiency by the coffee plant." Anais da Academia Brasileira de Ciências 79, no. 4 (2007): 767–76. http://dx.doi.org/10.1590/s0001-37652007000400015.

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The use of the 15N label for agronomic research involving nitrogen (N) cycling and the fate of fertilizer-N is well established, however, in the case of long term experimentation with perennial crops like citrus, coffee and rubber tree, there are still shortcomings mainly due to large plant size, sampling procedures, detection levels and interferences on the system. This report tries to contribute methodologically to the design and development of 15N labeled fertilizer experiments, using as an example a coffee crop fertilized with 15N labeled ammonium sulfate, which was followed for two years.

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Dekemati, Igor, Barbara Simon, Igor Bogunovic, et al. "Three-Year Investigation of Tillage Management on the Soil Physical Environment, Earthworm Populations and Crop Yields in Croatia." Agronomy 11, no. 5 (2021): 825. http://dx.doi.org/10.3390/agronomy11050825.

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The aim of this study was to determine the environmental suitability of conservation tillage systems. A 3-year experiment was conducted in Croatia, to study the effects of different tillage treatments on soil properties, with the following: deep (DC), shallow tine cultivation (SC) and ploughing (P). Soil penetration resistance (SPR) was significantly greater in P compared to DC in all three years. In 2016, it was found at 30–40 and 40–50 cm; in 2017 at 10–20 cm; in 2018 at 0–10 and 10–20 cm. However, SC was significantly greater at 20–30, 30–40 and 40–50 cm compared to P and DC in 2017. The gr

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VandenBygaart, A. J., and D. A. Angers. "Towards accurate measurements of soil organic carbon stock change in agroecosystems." Canadian Journal of Soil Science 86, no. 3 (2006): 465–71. http://dx.doi.org/10.4141/s05-106.

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In response to Kyoto Protocol commitments, countries can elect agricultural carbon sinks to offset emissions from other sectors, but they need to verify soil organic carbon (SOC) stock change. We summarize issues we see as barriers to obtaining accurate measures of SOC change, including: soil depth, bulk density and equivalent soil mass, representation of landscape components, experimental design, and the equilibrium status of the SOC. If the entire plow depth is not considered, rates of SOC storage under conservation compared with conventional tillage can be overstated. Bulk density must be m

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Letchamo, W., T. Kireeva, and A. Shmakov. "A Comparative Study of Rhodiola rosae under Cultivation and Natural Growing Conditions." HortScience 33, no. 3 (1998): 482b—482. http://dx.doi.org/10.21273/hortsci.33.3.482b.

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Rhodiola rosae L., from the Crassulacea family, is a perennial widely known in Russian folk and official medicine for its adaptogenic properties. The extracts from the roots of Rhodiola rosae is known to be a better alternative to ginseng because of its better effects, safety for people having high blood pressure, cardiac and kidney problems, pregnancy, and minors. Rhodiola is collected mostly from the wild, and this practice has resulted in the decimation of the wild population in Altai mountains and in southern Siberia. The objective of this investigation was to find the best method of produ

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Massey, Joseph H., C. Mark Stiles, Josh W. Epting, et al. "Long-term measurements of agronomic crop irrigation made in the Mississippi delta portion of the lower Mississippi River Valley." Irrigation Science 35, no. 4 (2017): 297–313. http://dx.doi.org/10.1007/s00271-017-0543-y.

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Rufo, Rubén, Jose Miguel Soriano, Dolors Villegas, Conxita Royo, and Joaquim Bellvert. "Using Unmanned Aerial Vehicle and Ground-Based RGB Indices to Assess Agronomic Performance of Wheat Landraces and Cultivars in a Mediterranean-Type Environment." Remote Sensing 13, no. 6 (2021): 1187. http://dx.doi.org/10.3390/rs13061187.

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The adaptability and stability of new bread wheat cultivars that can be successfully grown in rainfed conditions are of paramount importance. Plant improvement can be boosted using effective high-throughput phenotyping tools in dry areas of the Mediterranean basin, where drought and heat stress are expected to increase yield instability. Remote sensing has been of growing interest in breeding programs since it is a cost-effective technology useful for assessing the canopy structure as well as the physiological traits of large genotype collections. The purpose of this study was to evaluate the

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Fallovo, Carlo, Valerio Cristofori, Emilio Mendoza de-Gyves, et al. "Leaf Area Estimation Model for Small Fruits from Linear Measurements." HortScience 43, no. 7 (2008): 2263–67. http://dx.doi.org/10.21273/hortsci.43.7.2263.

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Accurate and nondestructive methods to determine individual leaf areas of plants are a useful tool in physiological and agronomic research. Determining the individual leaf area (LA) of small fruit like raspberry (Rubus idaeus L.), redcurrant (Ribes rubrum L.), blackberry (Rubus fruticosus L.), gooseberry (Ribes grossularia L.), and highbush blueberry (Vaccinium corymbosum L.) involves measurements of leaf parameters such as length (L) and width (W) or some combinations of these parameters. A 2-year investigation was carried out during 2006 (on seven raspberry, seven redcurrant, six blackberry,

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Lazaridi, Efstathia, George K. Papadopoulos, and Penelope J. Bebeli. "Andean Lupin Phenology and Agronomic Performance under Different Planting Dates in a Mediterranean Climate." Agronomy 10, no. 12 (2020): 2020. http://dx.doi.org/10.3390/agronomy10122020.

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Andean lupin in Europe has regained interest in recent years due to its high seed protein and oil content and its potential use for food, feed as well as a crop used in biorefineries. A search for suitable germplasm in combination with a determination of appropriate agronomical practices such as planting date are needed for commercial farming in new areas. The current study aims to evaluate the performance of six selected L. mutabilis accessions in a Mediterranean area using two different planting dates for two consecutive experimental years. A split plot design with accessions as subplots and

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Plaza, Javier, Marco Criado, Nilda Sánchez, Rodrigo Pérez-Sánchez, Carlos Palacios, and Francisco Charfolé. "UAV Multispectral Imaging Potential to Monitor and Predict Agronomic Characteristics of Different Forage Associations." Agronomy 11, no. 9 (2021): 1697. http://dx.doi.org/10.3390/agronomy11091697.

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The capability of UAVs imagery to monitor and predict the evolution of several forage associations was assessed during the whole growing cycle of 2019–20. For this purpose, eight different forage associations grown in triplicate were used: vetch-barley-triticale (VBT), vetch-triticale (VT), vetch-rye (VR), vetch-oats (VO), pea-barley-triticale (PBT), pea-triticale (PT), pea-rye (PR) and pea-oats (PO). Six biophysical parameters were monitored through six vegetation indices on seven measurements dates distributed along the growing cycle. The experiments were carried out on the organic farm “Gal

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Mayers, JD, RJ Lawn, and DE Byth. "Agronomic studies on soybean (Glycine max (L.) Merrill) in the dry seasons of the tropics. I. Limits to yield imposed by phenology." Australian Journal of Agricultural Research 42, no. 7 (1991): 1075. http://dx.doi.org/10.1071/ar9911075.

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An analysis was undertaken of the development, growth and seed yield of irrigated soybean crops grown during the dry season of the semi-arid tropics in north-western Australia, to establish yield potentials and identify major climatic or physiological constraints. Ten tropically adapted genotypes were grown at three sowing times, using agronomic management practices designed to maximize productivity and minimize constraints due to water supply, fertility, weeds and insects. In addition to phenology, seed yield, dry matter (DM) accumulation, and seed and plant morphological traits, measurements

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Conner, R. L., S. F. Hwang, S. M. Woods, et al. "Influence of agronomic traits on the expression of tissuespecific resistance to mycosphaerella blight in field pea." Canadian Journal of Plant Science 87, no. 1 (2007): 157–65. http://dx.doi.org/10.4141/p05-213.

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Mycosphaerella blight, caused by Mycosphaerella pinodes, is the most destructive disease of field pea (Pisum sativum L.) in western Canada. A 3-yr field study conducted at two field locations examined the effect of differences in lodging, growth stage and maturity on disease development among field pea cultivars that possess different forms of partial resistance. Significant differences in disease development, measured as area under the disease progress curve (AUDPC), and as disease severity on the leaves, stems and pods were observed among the field pea cultivars. These measurements of diseas

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Ouedraogo, M., O. D. Smith, C. E. Simpson, and D. H. Smith. "Early and Late Leaf Spot Resistance and Agronomic Performance of Nineteen Interspecific Derived Peanut Lines1." Peanut Science 21, no. 2 (1994): 99–104. http://dx.doi.org/10.3146/i0095-3679-21-2-7.

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Abstract Nineteen selected interspecific peanut lines with resistance to leaf spot [Cercospora arachidicola Hori and/or Cercosporidium personatum (Berk, and Curt.) Deighton] were field tested 3 yr for disease reaction and productivity with and without foliar fungicide protection. Measurements included severity ratings of leaf spot every 2 wk based on the Florida leaf spot disease rating scale, and pod yield. Area under disease progress curves (AUDPC) and pod yield losses were calculated. Differences among the interspecific lines in AUDPC values were significant, and one line had values equal t

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Ingram, Sam, Matthew H. Poore, and Daniel H. Poole. "24 Renovating toxic-infected tall fescue pastures for profitability, animal performance, and soil health." Journal of Animal Science 97, Supplement_1 (2019): 20. http://dx.doi.org/10.1093/jas/skz053.044.

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Abstract Renovating toxic-infected tall fescue (TF) pastures to non-toxic infected tall fescue (NE) for profitability, animal and agronomic performance without compromising soil health is needed to transition to NE in the southeast U.S. Three renovation strategies were evaluated for impact on soil health, profitability, and animal and agronomic performance in a replicated field trial located in Bahama, NC. Strategies included: 1) control (C), 2) renovation to NE after one season of a single specie cover crop (1-SM), 3) renovation to NE after three seasons of a single specie cover crop (3-SM),

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Ingram, Sam, Matthew H. Poore, and Daniel H. Poole. "147 Renovating toxic-infected tall fescue pastures for profitability, animal performance, and soil health." Journal of Animal Science 97, Supplement_1 (2019): 37–38. http://dx.doi.org/10.1093/jas/skz053.084.

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Abstract Renovating toxic-infected tall fescue (TF) pastures to non-toxic infected tall fescue (NE) for profitability, animal and agronomic performance without compromising soil health is needed to transition to NE in the southeast U.S. Three renovation strategies were evaluated for impact on soil health, profitability, and animal and agronomic performance in a replicated field trial located in Bahama, NC. Strategies included: 1) control (C), 2) renovation to NE after one season of a single specie cover crop (1-SM), 3) renovation to NE after three seasons of a single specie cover crop (3-SM),

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Santillano-Cázares, Jesús, Fidel Núñez-Ramírez, Cristina Ruíz-Alvarado, María Cárdenas-Castañeda, and Iván Ortiz-Monasterio. "Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture." Agronomy 8, no. 12 (2018): 304. http://dx.doi.org/10.3390/agronomy8120304.

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Sustainable crop production systems can be attained by using inputs efficiently and nitrogen use efficiency (NUE) parameters are indirect measurements of sustainability of production systems. The objective of this study was to investigate the effect of selected nitrogen (N) management treatments on wheat yields, grain and straw N concentration, and NUE parameters, under conservation agriculture (CA). The present study was conducted at the International Maize and Wheat Improvement Center (CIMMYT), in northwest, Mexico. Seventeen treatments were tested which included urea sources, timing, and me

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Smith, Brendan J., John A. Kirkegaard, and Geoff N. Howe. "Impacts of Brassica break-crops on soil biology and yield of following wheat crops." Australian Journal of Agricultural Research 55, no. 1 (2004): 1. http://dx.doi.org/10.1071/ar03104.

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Biofumigation refers to the allelopathic effects of brassicas on non-desirable soil organisms in a rotation cropping system. These effects are additional to non-hosting of root diseases, responsible for much of the break-crop effect observed in a following cereal crop. We investigated the biofumigation impacts of canola on take-all disease and rhizosphere microorganisms of following wheat crops. The biofumigation potential of the canola was tested by comparing effects of Brassica and non-Brassica break-crops and by using canola varieties with differing levels of root glucosinolates, the precur

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Ravindran, V., and Wayne L. Bryden. "Amino acid availability in poultry—in vitro and in vivo measurements." Australian Journal of Agricultural Research 50, no. 5 (1999): 889. http://dx.doi.org/10.1071/ar98174.

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Methodology to evaluate the protein quality or amino acid availability in feed ingredients for poultry using in vitro (enzymic, chemical, or microbiological assays), indirect in vivo (plasma amino acid assays), or direct in vivo (growth or digestibility assays) measurements has been reviewed. The specific applications and limitations of these methods are examined. In vitro assays are useful in providing information on heat damage in selected protein sources under defined conditions, and on relative ranking of different samples, but they cannot form the basis of practical feed formulations. Whi

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Nasser, Maurício Dominguez, Estefânia Martins Bardiviesso, Ariel Santivañez Aguilar, and Augusto Zonta. "Soil temperature and agronomic implications in two regions of the State of São Paulo, Brazil." Scientia Agraria Paranaensis 1, no. 1 (2020): 12. http://dx.doi.org/10.18188/sap.v19i1.22578.

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Plants can tolerate a wide range of soil temperature variations, but their development is affected when the soil undergoes higher or lower temperatures of certain extreme values. The aim of this study was to assess the soil temperature of two regions of the state of São Paulo, Brazil. Daily measurements of soil temperature were taken at two weather stations, one in the municipality of Adamantina (soil classified as Podzolic, Dark Red Latosol, Eutrophic, moderate A, of sandy/medium texture) and another in the municipality Monte Alegre do Sul (soil classified as Red Yellow Podzolic, of fine sand

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Montero, F. J., J. A. de Juan, A. Cuesta, and A. Brasa. "Nondestructive Methods to Estimate Leaf Area in Vitis vinifera L." HortScience 35, no. 4 (2000): 696–98. http://dx.doi.org/10.21273/hortsci.35.4.696.

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The importance of rapid, nondestructive, and accurate measurements of leaf area (LA) in agronomic and physiological studies is well known, but a search of the literature revealed little information available for grape (Vitis vinifera L.). The results described herein include a comparison of 12 different mathematical models for estimating leaf area in `Cencibel'. The simplest, most accurate regression equations were: LAi = 0.587 LW (R2 = 0.987) and LAi = 0.588 LW (R2 = 0.994), where LAi is leaf area measured using image analysis and LW is leaf length × maximum width. Use of maximum width (W), l

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Liu, Sin-Yie, Whi-Koa Wu, Jau-Yueh Wang, Li-Mei Son, Ming-Hong Yen, and Chun-Ching Lin. "Studies on the Agronomic Characteristics, Yield, and Saikosaponin Content of Two Bupleurum Species in Taiwan." American Journal of Chinese Medicine 23, no. 02 (1995): 181–94. http://dx.doi.org/10.1142/s0192415x95000249.

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Two Bupleurum species (Bupleurums spp.), i.e., B. falcatum L. cv. Tainung No. 1 and B. kaoi Liu, Chao, et Chuang, were compared for their differences in seed germination, plant characteristics and root yield, and saikosaponin content. Experimental data showed that the most suitable temperature for seed germination of the two species was 16°C. Two treatments, cold stratification at 4°C for 8 weeks and presoaking by running water for 2 days, resulted in higher germination rates. Tainung No. 1 possessed a higher 1,000-seed weight than B. kaoi. However, field survival rate was higher for B. kaoi t

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Wang, Yingcheng, Hao Ying, Yulong Yin, Hongye Wang, and Zhenling Cui. "Benefits and Trade-Offs of Tillage Management in China: A Meta-Analysis." Agronomy 11, no. 8 (2021): 1495. http://dx.doi.org/10.3390/agronomy11081495.

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In China, deep tillage (DT; to >20 cm soil depth) has increased crop yields by improving soil properties, while no-tillage (NT) has been recommended to reduce the labor and machinery costs. Local farmers are willing to adopted rotary tillage (RT; harrowing to 10–15 cm depth) for easy management. However, the effects of these tillage management methods on agronomic productivity, greenhouse gas (GHG) emissions, soil organic carbon (SOC) sequestration, and economic return have not been quantified systematically, and their effectiveness remains in question. Here, we present a meta-analysis of t

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Goulet, Etienne, and Gérard Barbeau. "Contribution of soil electric resistivity measurements to the studies on soil/grapevine water relations." OENO One 40, no. 2 (2006): 57. http://dx.doi.org/10.20870/oeno-one.2006.40.2.875.

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<p style="text-align: justify;">The classical techniques that allow to quantify the soil water status such as the gravimetric method or the use of neutrons probes do not give access to the volume of soil explored by the plant root system. On the contrary, electric tomography can be used to have a global vision on the water exchange area between soil and plant. The measurement of soil electric resistivity, as a non destructive, spatially integrative technique, has recently been introduced into viticulture. The use of performing equipment and adapted software allows for rapid data processi

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Вараксин, Gennadiy Varaksin, Вайс, et al. "FORECAST OF THE STRUCTURE OF SHELTERBELTS IN THE CENTRAL SIBERIA TAKING INTO ACCOUNT AGRONOMIC CHARACTERISTICS OF PLANTATIONS." Forestry Engineering Journal 7, no. 1 (2017): 6–16. http://dx.doi.org/10.12737/25187.

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The study of the structure was based on a series of distribution by the steps of the thickness. Measurements were carried out in forest shelter belts of the southern part of Central Siberia. Plots were laid on the territory of the Republic of Khakassia (Ust- Abakan, Bay, Shirinsky, Shushensky districts), Krasnoyarsk territory (Minusinsk district) and the Republic of Tuva (Kyzylskiy district). Approximation of distribution rows by diameter has been implemented by two functions: normal distribution and Weibull distribution. With respect to protective forest belts for most forest stands, structur

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Betancur G., Jorge Andres, Sandra Bibiana Muriel R., and Elena Paola Gonzalez J. "Morphological characterization of the red dragon fruit - Selenicereus undatus (Haw.) D.R. Hunt – under growing conditions in the municipality of San Jerónimo (Antioquia, Colombia)." Revista Facultad Nacional de Agronomía Medellín 73, no. 1 (2020): 9019–27. http://dx.doi.org/10.15446/rfnam.v73n1.77735.

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The red dragon fruit Selenicereus undatus is a native fruit from the Americas. Its growing appeal in the international market as an exotic fruit highlights the relevance of the crop for the local economies. In Colombia, the high diversity within the genus and species makes it difficult to have reliable materials for propagation as cultivars. This agronomic challenge requires more studies of the distribution and real diversity within the genus Selenicereus sp. Due to the information aforementioned, the fruit is harvested in small localities as an extraction production system. This project aimed

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Palumbo, Galvao, Nicoletto, Sambo, and Barcaccia. "Diversity Analysis of Sweet Potato Genetic Resources Using Morphological and Qualitative Traits and Molecular Markers." Genes 10, no. 11 (2019): 840. http://dx.doi.org/10.3390/genes10110840.

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The European Union (EU) market for sweet potatoes has increased by 100% over the last five years, and sweet potato cultivation in southern European countries is a new opportunity for the EU to exploit and introduce new genotypes. In view of this demand, the origins of the principal Italian sweet potato clones, compared with a core collection of genotypes from Central and Southern America, were investigated for the first time. This was accomplished by combining a genetic analysis, exploiting 14 hypervariable microsatellite markers, with morphological and chemical measurements based on 16 parame

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Coull, Malcolm, Benjamin Butler, Rupert Hough, and Luke Beesley. "A Geochemical and Agronomic Evaluation of Technosols Made from Construction and Demolition Fines Mixed with Green Waste Compost." Agronomy 11, no. 4 (2021): 649. http://dx.doi.org/10.3390/agronomy11040649.

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Construction and demolition fines (C&D-fines) and green waste compost (GWC) are two commonly generated urban waste materials that represent repositories of geochemical value. Here technosols were produced from volumetric mixtures of these materials ranging from 0–100% C&D-fines, with the remaining proportion comprised of GWC. Agronomic assessment was carried out by way of pot and rhizobox plant growth experiments with ryegrass, barley and pea to determine germination, plant mass and rooting behaviours. Geochemical and mineralogical evaluation was achieved by soil pore water solution me

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Butts, Christopher L., Ronald B. Sorensen, and Marshall C. Lamb. "Irrigator Pro: Progression of a Peanut Irrigation Scheduling Decision Support System." Applied Engineering in Agriculture 36, no. 5 (2020): 785–95. http://dx.doi.org/10.13031/aea.13909.

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HighlightsThe logic used in developing a decision support system for irrigating peanut based on max/min soil temperature is describedLogic to transform decision support system from peanut to irrigate corn and cotton with and without soil sensors.Progression of a decision support system from a desktop program to a web/mobile applicationAbstract. Irrigator Pro is a decision support tool for scheduling irrigation events in peanut. It was deployed in 1995 as a rule-based system using crop history, yield potential, soil type, in-season irrigation/rainfall and maximum/minimum soil temperature. As co

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