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 25 for “"Continuous Corn"”.
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Managing Continuous Corn for Yield and Soil Productivity
With recent transition from the corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] (CS) rotation to continuous corn (CC) in the Midwestern U.S., there is a need to understand how this transition will affect soil organic matter (SOM). Soil samples were collected following corn from three locations …
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Managing the continuous corn yield penalty with crop and residue management
Corn (Zea mays L.) grown in rotation with soybean [Glycine max (L.) Merr.] generally yields more than corn grown continuously, with the latter designated the continuous corn yield penalty (CCYP). Due to global food security concerns and corn’s versatility in food products, animal feed, and …
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Yield response of continuous corn to residue removal, tillage, and nitrogen rate
Removing corn residue for use as biofuel may require adjustments in tillage systems and nitrogen rates. Research was conducted at DeKalb, Monmouth, Urbana, and Perry, Illinois to examine the response of three residue removal rates (full, partial, and none) and two tillage treatments (no-till and …
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Long-term effects of copper rich swine manure application on continuous corn production
… of 1978 and continued through 1988 to evaluate corn (Zea <i>mays</i> L.) response to high Cu levels from Cu rich swine manure and CuS0₄ applications. The field research was conducted on soils with diverse properties, i.e., on a Bertie fine sandy loam (Aquic Hapludults), a Guernsey silt loam …
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Stover, tillage, and nitrogen management in continuous corn for grain, ethanol, and soil carbon
Interest in harvesting corn (Zea mays L.) cellulosic materials for ethanol production has resulted in the development of research questions regarding its potential effects on crop growth and productivity as well as soil quality. Previous research has generally occurred in environments different …
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Long-term effect of crop rotation and tillage on soil properties
… on soil physical and chemical properties. Continuous corn (Zea mays L.), corn-soybean (Glycine max [L.] Merr.), corn-soybean-wheat (Triticum aestivum L.), and continuous soybean sequences were split into conventional tillage and no-till subplots at two western Illinois sites and were …
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Empirical Studies in Production Economics and International Agricultural Development Issues
… an exploration of nitrogen use and its impact on continuous corn production and profitability in Colorado. The first manuscript titled "Switching Regression Stochastic Plateau Production Functions––A Comparison of Alternative Specifications" proposes an alternative approach for estimating crop …
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Life Cycle Assessment of Select Agricultural Practices: Assessing the Potential for Climate Mitigation
… studies. The first study investigated future corn and soybean yields in the Raccoon watershed in the US Corn Belt using projected climate data. This study used the Environment Policy Integrated Climate (EPIC) model to estimate the impact of climate change for 2015-2099 with data downscaled …
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The role of crop residue and nitrogen in the corn-soybean rotation effect
… residue and N form that would help to manage continuous corn and soybean to overcome the lack of rotation effect. (Abstract shortened by UMI.)
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Predicting Field Water Balance, Crop Yield, and the Economics of Drainage Under Various Cropping Systems Using Drainmod
… nitrate losses. Six experimental plots, under corn-soybean rotation, divided into drained and undrained plots, were monitored for baseline data (i.e. drainage discharge, water table depth, infiltration, bulk density, and rainfall) collection. DRAINMOD was used with the baseline data to quantify …
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Cropping systems under water-limited conditions: effects of rotation and nitrogen management on yield, resource use efficiency, profitability, and soil properties
… in south-central Nebraska evaluated five corn-based rotations: continuous corn (C), corn-sorghum (C-Sg), corn-soybean (C-Sb), corn-wheat (C-W), and corn-corn-wheat (C-C-W), using glucose equivalent yield (GE), WUE, NUE, and partial net return as integrative performance metrics. Continuous …
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Evaluation of soybean aphid resistance, yield qtl confirmation, and genetic gain in soybean
… yield gain for soybean following eleven years of continuous corn or following a corn-soybean rotation. The experiment was performed in 2010, using 45 MG II soybean cultivars, 40 MG III cultivars, and 45 MG IV cultivars that were released between the 1923 and 2008. Yield data was adjusted using …
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Soil quality in long-term corn and soybean rotations
… more than ten years after establishment. Continuous corn (CCC), corn-soybean (CS), and corn-corn-soybean (CCS) rotations were arranged in a randomized complete block design (RCBD), with three or four replications at six University of Illinois Crop Sciences research centers, at Urbana, …
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Soil health assessment of the Sanborn Field long-term experimental study
… these samples to assess soil health using the Cornell Comprehensive Assessment of Soil Health (CASH) method. To assess soil health in this study, soil health scoring was determined used R-studio version 1.1.149 to relate the interaction of cropping systems, soil management, and slope positions. …
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Long-term n fertilization affects soil bacterial communities in agronomic fields
… under long-term N gradient treatment in continuous corn (CCC) and to investigate the response of different soil microbial groups involved in the N cycle to different N fertilization levels. Field trial in CCC on three N fertilization rates (0, 210, and 280 kg N/ha) is arranged in a …
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The movement of calcium and magnesium in selected Virginia soils from surface applied dolomitic limestone
… properties will be affected in soils cropped in continuous corn or corn-soybean rotations as opposed to crops of continuous alfalfa. Despite cation movement in the profile, neutralization of acidity may not occur beyond the plow layer, i.e. the Frederick silt loam or may occur to a depth of 50 …
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Evaluating the effect of foliar insecticides on suspected Bt-resistant western corn rootworms in rotated soybean
The western corn rootworm, Diabrotica virgifera virgifera LeConte, is the most economically significant insect pest of U.S. corn production and can inflict substantial yield loss. Historically, crop rotation was a successful management strategy because oviposition occurred predominantly in …
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Gray leaf spot of corn: yield loss and evaluation of germplasm for resistance
Gray leaf spot (GLS) of corn (Zea mays L.), caused by the fungus Cercospora zeaemaydis (CZM) (Tehon and Daniels) has increased in incidence and severity with increasing use of no-tillage and continuous corn practices. This disease can be yield limiting. Corn hybrids were evaluated under natural …
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Field study with rock phosphate and superphosphate 1952 to 1990 and dissolution of rock phosphate in silage leachate
… (SP) on crops consisting of oats-alfalfa (hay)-corn-corn (rotation ""A"") and corn-soybean (rotation ""B""). Phosphorus applications ranged from 0 to 80 pounds P$\sb2$O$\sb5$/a. Agronomically, rotation ""B"" responded better than rotation ""A"". Eighty pounds of SP P$\sb2$O$\sb5$/a gave the …
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Crop residue management effects on crop production, greenhouse gases emissions, and soil quality in the Mid-Atlantic USA
… while simultaneously improving rural economies. Corn (Zea mays L.) stover and wheat straw (Triticum aestivum L.) residues have particular promise given these crops are widely grown and their cellulosic fractions present a captured resource as a co-product of grain production. Annual systems also …
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