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.
Results
Showing 1 to 16 of 16 for “"sidedress"”.
-
Improving Early Season Sidedress Nitrogen Rate Prescriptions for Corn
… was consistently below the profitable estimated sidedress N rate.
-
Nitrogen and phosphorus fertilization for efficient corn production in Virginia
… to determine optimum starter-band and sidedress N rates for com grown in Virginia, to evaluate possible indicators of optimum starter-band and sidedress N rates, and to determine if there is any response to P fertilizer application to com grown on soils testing high to very high in …
-
Alternative and Improved Cropping Systems for Virginia
… with the ability to increase the efficiency of sidedress nitrogen (N) application for corn and to test the performance of grain sorghum in both full season and double-crop rotations in this region. For the corn studies, seven field experiments were established in 2012-2014 with four replications …
-
Crop modeling for assessing and mitigating the impacts of extreme climatic events on the US agriculture system
… and satellite imagery based within-field scale N sidedress prescription tool for the US rainfed maize system. As an early attempt to integrate advances in multiple areas for precision agriculture, this tool successfully captures the subfield variability of N dynamics and gives reasonable spatially …
-
Winter Annual Cover Crops Interseeded into Soybean in Eastern Virginia: Influence on Soil Nitrogen, Corn Yield, and In-Season Soil Nitrogen Tests
… and 0, 45, 90, 135, and 180 kg FN ha-1 at sidedress) to corn as subplots. The highest N uptake for cereal rye at winter dormancy was 18 kg N ha-1, but the average was 6-7 kg N ha-1. At WCC termination average N uptake for cereal rye was 35 and 40 kg N ha-1 in 2013 and 2014, respectively. …
-
Assessment of Spectral Reflectance as Part of a Variable-Rate Nitrogen Management Strategy for Corn
… with various rates of preplant, starter, and sidedress N fertilizer to establish a wide range of grain yield potential. Spectral measurements, tissue N, chlorophyll measurements, and plant physical measurements were collected at growth stages V6, V8, and V10. At maturity, grain yield was …
-
Influence of Poultry Litter on Dark Tobacco Growth and Soil Nutrient Availability
… availability in poultry litter plots receiving a sidedress application. Data from the Owensboro Timing Study indicated that regardless of application timing, cured lamina tissue chloride concentration in poultry litter amended plots were greater than the tobacco industry standard of 1%. Chloride …
-
Cover Cropping: A Strategy to Healthy Soil and Nitrogen Management in Corn
… was significant relationship between NO3-N at N sidedress time and relative yield (r = 0.65) at these long-term sites. In short-term cover crop study (Chapter 1), Presidedress nitrate test (PSNT) nitrate concentration was >15 mg kg-1 at 5 sites and in long term cover crop study (Chapter 2), 15 …
-
Evaluation of Urea Ammonium-Nitrate Fertilizer Application Methods
… have created a need to reevaluate current sidedress N application recommendations for corn. Injection of Urea Ammonium-Nitrate (UAN) may reduce N-loss via ammonia (NH?) volatilization compared to current surface application methods. This study evaluated injection and surface-banding …
-
Quantifying the agronomic and water quality tradeoffs of fertilizer management with multiobjective evolutionary algorithms
… rates, the optimization results support that sidedress fertilizer applications from 20 to 50 days after planting not only maximize profit for injection and surface broadcast but also reduce outcome sensitivity to the placement method and offer the best compromise between pro fit and drainage …
-
Soil nitrogen, active carbon, corn, and small grain response to manure injection
… occurred at the one site that did not receive a sidedress N application, which suggests that N was not limiting at the other seven sites. A small-scale research plot study examining fall manure applications under small grains found similar results to the previous study. No consistent differences …
-
Agronomic management to improve corn productivity under high-yielding environments
… yield loss that could not be recovered with a sidedress application. However, site-years with high check plot yields achieved greater yields with split applications of N. When making a split application, sidedressing urea ammonium nitrate (UAN) as Y-drop near the crop row was the best method …
-
Innovations in fertilizer use and agronomic management for greater productivity of corn and soybean
… and potassium (K) fertility, foliar protection, sidedress nitrogen (corn only), plant population (corn only), relative maturity (soybean only), seed treatment (soybean only) and row spacing. Individual agronomic factors such as narrower row spacing or P and K fertilizer applications resulted in …
-
An Assessment of the Quality of Agricultural Best Management Practices in the James River Basin of Virginia
… grains, protective cover for specialty crops, sidedress application of nitrogen on corn, small grain cover crops-fertilized and harvested, and small grain cover crops for nutrient management. Assessment tools were developed using both Virginia BMP standards and expert knowledge. Virginia …
-
Innovations in agronomic management to improve maize productivity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
-
New innovations for the 4R’s of nutrient stewardship to improve corn productivity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms