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Showing 1 to 14 of 14 for “"crop nitrogen"”.
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Estimating the Contributions of Soil and Cover Crop Nitrogen Mineralization for Corn
Current Virginia nitrogen (N) fertilizer recommendations do not include site-specific estimates of N supply from cover crops (CCs) or soil organic matter (SOM). Recent research successfully predicted the contribution of N from SOM and CCs to corn (Zea mays L.) in Pennsylvania. The objective of this …
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Optimizing yield and crop nitrogen response characterization by integrating spectral reflectance and agronomic properties in sugarcane and rice
Nitrogen (N) is one of the most important and limiting nutrients in crop production. The best management practices for N fertilization is always challenging due to its dynamic system in the nature. Remote sensing has emerged as one of the most useful technologies in modern agriculture for …
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Strategic applications of nitrogen fertiliser to increase the yield and nitrogen use efficiency of wheat.
In southern Australia a large proportion of crop nitrogen requirements are usually applied early in the season, either just before or at sowing, or during the first 6-8 weeks after sowing. However, the time of greatest demand for nitrogen by wheat crops is during the stem-elongation phase when the …
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Data-intensive crop knowledge discovery in the era of cybergis and machine intelligence
… it is critically important to obtain timely crop information such as yield potential and growing conditions as crop information is often time sensitive for societal applications. With rapidly advancing remote sensing technologies such as satellite- and UAV-based approaches of fine-resolution, …
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Characterization of Enzymes in the L-Asparagine Metabolism Pathway in Legumes
… economically and nutritionally valuable legume crops, such as soybean, requires a comprehensive understanding of nitrogen metabolism. L-asparagine (Asn) is an important source of nitrogen stored and transported in higher plants, favoured in legumes due to its advantageous 2N:4C ratio. The …
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Toward circular and sustainable nitrogen (N) management in the US and globally
… have more than tripled the creation of nitrogen (N), enabling unprecedented gains in agricultural productivity. Yet inefficient N use has generated widespread air and water pollution, greenhouse gas (GHG) emissions, and ecosystem degradation, undermining food-energy-water (FEW) …
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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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Evaluation of the UAV-Based Multispectral Imagery and Its Application for Crop Intra-Field Nitrogen Monitoring and Yield Prediction in Ontario
… survey in agriculture. In addition, UAV-based crop monitoring and methods are new challenge of remote sensing application in agriculture. First, in my thesis the potential of UAV-based imagery was investigated to monitor spatial and temporal variation of crop status in comparison with RapidEye. …
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Agronomic management and biostimulants to increase corn and soybean productivity
… 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 nitrogen (N) fertility, plant population, foliar protection, hybrid/variety, and additional …
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Tillage and cover cropping effects on soil properties and crop production
Cover crops (CCs) have been heralded for their potential to retain nutrients in the field and improve soil properties, but their adoption within the Midwestern Corn-Belt remains limited. We assessed the effects of integrating five sets of CCs into corn-soybean rotations under no-till and chisel …
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Examining the effect of rotation sequence on biological nitrogen fixation of pulse crops
Nitrogen (N) is often the most limiting nutrient in prairie crop production and is applied in the greatest quantity. Including pulse crops in rotations has become a popular option due to their ability to form symbiotic relationships with dinitrogen-fixing bacteria. This relationship means pulse …
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The effects of winter cover cropping on nutrient leaching through repacked soil columns
Winter cover cropping has been identified as a conservation practice with the potential to decrease nutrient transport from agricultural fields, which consequently reduces nutrient loading to water bodies, eutrophication, hypoxia, and degradation of local ecosystems. This study utilized …
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Cover Cropping: A Strategy to Healthy Soil and Nitrogen Management in Corn
Economic and environmental concerns surrounding nitrogen (N) have motivated efforts to improve estimates of plant available N in soil in order to improve crop N management decisions. Cover crops have been recognized as an effective tool for protecting soil and enhancing soil function including N …