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 16 of 16 for “"Corn planting"”.
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Corn planting methods in Virginia's residue mulch
… Experiment Station to determine a method of planting corn in a vegetative residue mulch seedbed which would result in stand and yields as good as obtained in planting in a conventionally prepared seedbed. Yields obtained in the first experiments in Virginia were very low because methods used …
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Corn planting strategies in the United States Corn Belt
In Illinois, corn (Zea mays L.) producers aim to start planting operations in mid-April. Early planting allows for the use of longer-season corn varieties, which tend to yield more than shorter-season varieties. However, constraints to early planting in the U.S. Corn Belt include excessive soil …
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Use of herbicides, tillage, and grazing cattle for establishment of corn in rotation with alfalfa and rye
… to determine alfalfa (Medicago sativa) survival, corn (Zea mays) plant populations and corn growth in an alfalfa-corn rotation. Alfalfa was overseeded with rye (Secale cereale) in autumn prior to planting corn in spring of each year. Treatments were 1) non-grazed control with standard chemical …
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Modeling the profitability of Camelina Sativa as a biofuel feedstock in eastern Colorado
… price levels. The crop rotation cycle includes a corn planting, a fallow period, and a wheat planting. Camelina is grown exclusively during the fallow portion of the rotation and will not be grown at a time when commodity crops would otherwise be grown.
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Case Study of a Variant of Western Corn Rootworm, Diabrotica Virgifera Virgifera LeConte, in East Central Illinois
… applying soil insecticides prophylactically at planting. In fact, findings from this research might enable growers to reduce the use of soil insecticides. These findings also could open new avenues for managing this important pest. What role dose phenological asynchrony of corn and soybean …
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Soil quality in organic cropping systems
… in a soybean production system compared with corn. Cover crops tended to mitigate the negative effects of tillage on soil in this study and cover crops impacted soil quality more when grown in conjunction with soybean than with corn or wheat. Germination and emergence of corn in an organic …
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Crop Management for the Greater Utilization of Symbiotically Fixed Nitrogen
… and cool wet springs which delay soybean and corn planting. Vigorous legume growth in the spring may result in poor seedling emergence in the following crops under moisture stress conditions. The nitrogen contributions from the interseeded legumes ranged from 20-50 kg N/ha in the above-ground …
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Farm management implications of uncertainty in the number of days suitable for fieldwork in corn production
… the expected length of time available from planting to harvest. The dates that farmers most actively plant and harvest crops changes from year to year based on annual weather patterns that affect the number of days suitable to conduct fieldwork. This research analyzed corn planting and …
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Double-crop corn (zea mays) weed control in Virginia
Double-crop production of corn (Zea mays L.) for grain following the harvest of small grain is not currently practiced in Virginia. Historical precipitation and evapotransportation data indicate that delayed corn planting could result in a higher probability of moisture during critical periods of …
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Influence of Cover Crop Termination Timing on its Volunteers and Weed Suppression
… timings; 28, 14, 5, and 1 days before corn planting (DBP). Results indicated volunteerism was only an issue with rapeseed. Delaying rapeseed termination resulted in 0, 5, 12, and 22 volunteer plants m-2 at 28, 14, 5, and 1 DBP in corn. In order to manage these rapeseed volunteers, …
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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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Optimizing Weed Suppression Via Cover Crop and Herbicide Programs in the Mid-Atlantic
… Virginia farmers include cover crops in their corn (Zea mays L.) and soybean (Glycine max (L.) Merr.) production due to government subsidies and agronomic benefits. Progressive farmers have optimized cover crop management for specific goals, such as weed suppression and nitrogen fertilizer …
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Characterization of chemical composition, milling properties and carbon dioxide diffusivity resulting from early harvest corn and corn stover
The increasing demand of corn as food and fuel sources has increased the competition for feedstock between livestock and ethanol industries. Developing an effective corn harvesting, storage and utilization system can help reduce the competition for the limited corn supply in the current period. The …
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Benchmarking of off-road machinery operations with the use of geo-referenced data
… cost indicators. The methodology was applied to corn planting operations on a farm in east-central Iowa involving a 24-row planter. The methodology was applied to two fields that were selected based on their differences in shape and slope (%). Field one featured a water way which split the field …
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Agreement, Information and Time in Multiagent Systems
… of innovations (such as the diffusion of hybrid corn planting in Illinois), to modeling linguistic change. The thesis of this dissertation is that the ability for agents to optimally allocate resources towards 1) gaining information from which to infer the agreeing population's global agreement …
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Quantitative multifactor analysis of planter settings and row unit design for corn stand establishment in precision agriculture
Achieving a uniform stand of corn (Zea mays L.) is paramount for maximizing yield potential and enhancing resource use efficiency. Despite considerable advancements in planting technologies, challenges associated with variability in seed placement accuracy, seed depth, and overall population …