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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 20 for “"Corn crop"”.
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Branched Chain Fatty Acid Additions to Diets Containing Corn Crop Residues
… characteristics associated with feeding corn crop residues supplemented with branched-chain fatty acids, urea, molasses, corn steep liquor, soybean meal and corn gluten meal.
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Enhancing the feeding value of corn crop residues to improve beef cattle production
Corn has been used in cattle diets for more the 50 years in the United States. However, since 2005 when the “Ethanol Era” started, the demand for corn to be converted in to ethanol has been increasing. The increased demand for corn to be converted into ethanol, led to increased corn prices. When …
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Real-Time Nitrogen Detection System of Corn Crop Using a Multi -Spectral Imaging Sensor
… plants. The MSIS system provided a measure of crop response that correlated with plant SPAD measurements (-0.93 for G channel and -0.88 for R channel). The system had smaller measurement variation than the SPAD meter with a standard deviation of 0.13 in MSIS measurements whereas 0.26 in SPAD …
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Greenhouse evaluation of potassium application on selected soil and plant properties utilizing four Virginia ultisols
Three crops of corn (<i>Zea mays</i> L.) were grown on four Coastal Plain soils in a greenhouse study to determine the effects of increasing rates of Kon corn growth, elemental composition of corn tissue and soil nutrient levels. Plant height and production of dry matter were measured to determine …
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Energy in the Corn Belt: Is Maize Production Sustainable?
… has transformed agricultural production. Corn production methods changed from a sustainable, nutrient recycling production system to one reliant on imported fossil energy inputs. Located in the Western Corn Belt, Union County, South Dakota was chosen as the study area. Changes in …
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La vicia villosa como cultivo de cobertura : efectos de corto plazo sobre el suelo y la productividad del maíz bajo riego en el valle bonaerense del Río Colorado
… use of hairy vetch (Vicia villosa Roth) as cover crops (CC) in the CRV irrigated area previous to cash crops can be a feasible alternative to shor-ten the fallow period as well as it can make improvement in the physical and chemical soil conditions for future crops. This change in the edaphic …
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Resident and migrant blackbirds in southeastern Virginia: Agricultural depredations and winter roost locations
… appraisals were conducted in the fall of 1960. Crops checked included corn, peanuts, and milo. Based on the 96 fields examined throughout Nansemond County, the average monetary loss to the corn crop was slightly less than $.05 per acre. This loss can be reduced by planting a variety with a high …
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Multi-tactic ecological strategies to manage Bassia scoparia and Amaranthus tuberculatus in the cropping systems of Great Plains and Midwestern U.S.
… are one of the most troublesome weeds in the cropping systems of Great Plains and Midwestern United States, respectively. A widespread occurrence of multiple herbicide-resistant (MHR) B. scoparia and A. tuberculatus populations across the region has seriously limited herbicide options to …
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Unmanned Aerial System for Monitoring Crop Status
… cost of UAS with the need for increased crop yields under minimal applications of agrochemicals, and the immense potential for UAS in commercial agriculture becomes immediately apparent. What the agriculture community needs is a cost effective method for the field-wide monitoring of crops …
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Measurement of Cover Crop Evapotranspiration and Impacts on Water Management in Crop Production Systems
<p>Cover cropping is a popular agriculture practice that provides many benefits to the soil and subsequent cash crops. However, eastern South Dakota lies in a transitional climatic zone between the subhumid climate to the east and the semiarid climate to the west, an area susceptible to both excess …
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Fate of ¹⁵N-depleted fertilizer N in a corn-rye cropping sequence: plant uptake and soil distribution
… near Blacksburg during the 1989 through 1991 corn-rye growing seasons. The treatments in this experiment consisted of varying amounts of ¹⁵N-depleted fertilizer N applied to corn (Zea mays L.) at planting followed by a winter rye (Secale cereale L.) cover crop treatment. The research was …
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Tillage effects on soil physical properties, weed seed distribution in soil and shifts in species
… and shifts in species. The experiment included a corn-soybean rotation with both crop grown each year. For this study, only the corn crop was considered. The tillage systems for corn consisted of fall chisel plow followed by spring disk and field cultivate (CDFC), spring field cultivate (FC) and …
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Corn yield following a delayed application of nitrogen
Delaying some of the N supplied to the corn crop is considered a way to increase N uptake and yield and to limit N losses, but the length of the delay may increase the risk of yield loss. We conducted a 3-year experiment at Urbana, Illinois in which half of the N (112 kg N ha-1) was injected as UAN …
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Rye and vetch intercrops for reducing corn in fertilizer requirements and providing ground cover in the Mid-Atlantic region
Winter-annual cover crops reduce soil erosion by providing ground cover, while producing energy-cheap N for a subsequent crop. Incorporated cover crops or those left as no-till mulch can enhance soil structure and water infiltration. A series of studies was designed to test agronomic advantages of …
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Impacts of Spring-interseeded Cover Crops on Late-emerging Weed Suppression and Ground Cover in Corn (Zea mays L.) Production Systems
<p>Any alternative crop management strategy will only be adopted by growers if yield is not negatively impacted, fits within a current management practice, is easily implementable with minimal cost, or provides other beneficial features such as weed control or suppression. Corn production that …
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The influence of environment on certain constituents of quality and food value of hybrid sweet corn and field corn
… content of embryos and kernels of hybrid sweet corn, and (2) the influence of locally on the protein content of field corn varieties. The highest yield and weight of ears of sweet corn are obtained with plants spaced 6 inches apart. Of the three varieties, the medium-late maturing Seneca Chief …
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Agronomic management and biostimulants to increase corn and soybean productivity
Corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] have been in production in the Corn Belt together since the 1920s. Improved cultivars and crop management has allowed for ever-increasing corn and soybean grain yields. Management factors that have played a big role in the yield increases are …
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Within-row spacing effect on individual corn plant yield
… research has shown that modest non-uniformity of corn plant spacing has small, negative effects on grain yield. The extent to which this influence of distance to adjoining plants is due to compensatory yield adjustments is not known. In 2011 and 2012, high density stands in 76 cm rows were hand …