Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Planting dates"”.
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Effects of Soybean Cultivars and Planting Dates on Biomass Production
… the effects of cultivar maturity differences and planting dates on biomass production of soybean. The research was conducted on the Western Kentucky University Farm in 1993. The experimental design was a split-split-plot with four replications. The three planting dates (June 2, June 16, and July …
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The effects of relative planting dates of legumes on productivity of cassava - legume intercrop
… study aimed at evaluating the effect of relative planting date of legumes on the productivity of cassava-legume intercrop. Field experiments were conducted during 2014/2015 and 2015/2016 cropping seasons in Thohoyandou, Limpopo Province and Nelspruit, Mpumalanga Province. The experiments were laid …
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Effect of Nitrogen Rates, Planting Dates, and Irrigation Regimes on Potato Production in the Eastern Shore of Virginia
… decrease slowly as the season progresses. Early planting dates are desirable for farmers, as it allows them to perceive higher prices for their product, but early planting is also associated with lower air temperature during the early season, which in turn can affect plant development, water and …
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Effect of Kaolin clay, Planting Dates, and Color Mulches on Summer Tomato Production in the Eastern Shore of Virginia
… study explores the optimization of transplant dates, the implementation of reflective mulches, and the application of kaolin clay particle films. Field trials spanning two seasons were carried out, comparing different planting dates in May, June, and July, as well as the use of reflective, …
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Determination of Optimum Fall and Spring Nitrogen Fertilizer Rate for Maximizing Grain Yield of Soft Red Winter Wheat Sown at Variable Planting Dates
<p>An optimum planting date is important for winter wheat nitrogen (N) management as it dramatically changes the growing environment including temperature and moisture, ultimately affecting fertilizer efficiency and grain yield (GY). In Arkansas, high precipitation in the fall often forces farmers …
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Mapping agroecosystem management practices from space and quantifying their impacts on crop productivity
… practices, including cover cropping and planting dates, is very limited. Recent advances in satellite remote sensing provide a promising solution for detecting field-level, long-term, and large-scale agricultural management practices. Thus, this dissertation aimed to map field-level cover …
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Influence of tillage and mulch on the early growth of corn
… superimposed on each tillage treatment. Four planting dates of 3-week intervals were also included to provide a range of soil temperatures;Soil temperature was monitored during the test period, using thermocouples and a multipoint recording system. An accumulated growing degree unit (AGDU) was …
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Soybean expansion in Brazil: A quantitative assessment of past technological and environmental changes and implications for future climate change
… of today were deemed unsuitable for soybean planting until the 1970's, and the crop was limited to southern Brazil. The new regions were incorporated into production only after significant technological developments on soybean breeding and management practices. The expansion of soybeans into …
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Relay- and double-crop production systems for wheat
… the effects of intercropping and double-crop planting dates on alternative crops, and 4) evaluate double-crop planting dates of oil seed radishes on winter annual weed suppression and corn yields.
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Sweet sorghum fermentables as influenced by cultivar and planting and harvest dates
… in equipment and crop production. Two planting dates (15 May and 1 June) and eight harvest dates (30 Sep. to 15 Mar.) were used in efforts to to extend the availability of sweet sorghum fermentables. Respiration of sweet sorghum tissue was measured with an infrared gas analyzer before …
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Conservation tillage methods for cabbage production
… RT, and chisel plow, CP) and three planting dates (early, mid and late) were compared in 1985 and 1986. Plants were set with a locally adapted no-till transplanter into a cover crop of cereal rye (<i>Secale cereale</i> L.). Under unusually rainy conditions in 1985, cabbage yields …
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Inheritance of Resistance of Maize to Infection by Barley Yellow Dwarf Viruses
… incidence of virus were detected in the May 1992 planting. The highest levels of incidence of virus and a significant decrease in the mean 10 ear weights in inoculated plots were observed for the June planting dates both years. It was concluded that hybrid susceptibility to BYDVs should be …
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The environmental physiology of tomato (Lycopersicon esculentum Mill. cv. Heinz-6004) and black or eastern black nightshade (Solanum nigrum L. and Solanum ptycanthum Dun.) competition
… and May 28, June 17, and July 10 in 1989. All plantings were harvested 20, 40, and 60 days after planting, and dry weights and leaf areas determined. Degree-day models accurately predicted the growth of both species for all planting dates. Eastern black nightshade produced significantly more …
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A Systems Approach to Modelling the Effects of Climate Change on Agroforestry: A Case Study in Western Tanzania
… The application of fertilizers and flexible planting dates were determined to be the most effective management practices to improve yields for the baseline scenario. The climate ensemble for each time slice shows a range of attainable maize and wood yields. The baseline scenario 6 year maize …
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Effect of planting date on measured growth intervals for a set of genetically diverse maize hybrids
Delayed planting is known to affect the thermal and calendar day requirements of corn hybrids. There are conflicting reports in the literature as to whether the thermal intervals to certain growth stages are increased or decreased by delayed planting. A study of 12 maize hybrids was conducted in …
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Characterizing phenotypic diversity, genotype by environment interactions, and optimizing selection efficiency of a miscanthus germplasm collection
… chamber, 2) quantify the effect of early planting dates for Miscanthus seedlings in the field on survival, growth and yield, 3) assess genotypic differences in biomass yield, putative yield-component traits, and spring and autumn frost tolerance, 4) determine the predictive value of three …
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Compensation of Cotton to Square Removal at Various Rates
… square removal using two cotton cultivars at two planting dates over two Virginia locations; the effect of mechanical square removal on cotton yield components and quality; and to evaluate the use and effectiveness of COTMAN in tracking major phenological stages PHS, FF, and Cutout of cotton at …
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Assessing the Potential Use of Teff as an Alternative Grain Crop in Virginia
… kg PLS ha??. Nitrogen fertilizer was applied at planting in the form of urea at a rate of 56 kg ha??. The experimental design was a randomized complete block with a two-way factorial treatment structure (variety and planting date) and four replications. Grain yield and nutritive value, straw …
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