Browsing University of Missouri-Columbia by Thesis Advisor "Kitchen, Newell R."
Now showing items 1-12 of 12
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Canopy sensing algorithm performance and modification using soil and weather information
(University of Missouri--Columbia, 2016)Corn production across the U.S. Corn Belt can be often limited by the loss of nitrogen (N) due to leaching, volatilization and denitrification. The use of canopy sensors for making in-season N fertilizer applications has ... -
An environmental assessment of sensor-based variable-rate nitrogen management in corn
(University of Missouri--Columbia, 2006)Nitrogen (N) fertilizer unused by the crop is left to the fate of the processes of the N cycle, and can eventually lead to nitrate contamination of surface and ground waters. In order to address this problem, various methods ... -
Establishment and yield of bioenergy miscanthus on clayplan soil ladscapes
(University of Missouri--Columbia, 2015)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Bioenergy crop Miscanthus × giganteus has been well studied for its establishment and yield in Europe and certain parts of the US Midwest but little ... -
Evaluating and improving corn nitrogen fertilizer recommendation tools across the U.S. Midwest
(University of Missouri--Columbia, 2018)Determining which corn (Zea mays L.) nitrogen (N) recommendation tools best predict the economically optimal N rate (EONR) would be valuable for maximizing profits and minimizing environmental consequences. The objectives ... -
Grain yield and greenhouse gas emissions from organic and conventional cropping systems on claypan soil landscapes
(University of Missouri--Columbia, 2015)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] With increasing world populations, farmers must become more efficient at producing food, fiber and fuel while reducing negative environmental impacts. ... -
Growth, nitrogen utilization, and energy production of grain and switchgrass management systems on varying topsoil depth of claypan soils
(University of Missouri--Columbia, 2011)Depth to claypan (DTC) plays an important role for Midwest claypan soils in storing plant-available water for grain crops, but it is unknown how this same soil property affects switchgrass (Panicum virgatum. L.) growth and ... -
Management impacts on GHG emissions and yield for an organic soybean crop
(University of Missouri--Columbia, 2014)As demand for organically grown food increases, growing organic soybean can be profitable and also improve soil ecosystem services through sustainable agronomic practices. However, because most chemical inputs are restricted ... -
Methods for high-resolution soil-landscape modeling in midwest upland landscapes
(University of Missouri--Columbia, 2008)Traditional soil mapping concepts do not sufficiently address the spatial resolution of some soil management problems. Continuous models of soil profiles and landscapes are needed to move beyond the categorical paradigm ... -
Nitrogen and harvest impact on warm-season grass biomass yield and feedstock quality
(University of Missouri--Columbia, 2017)Perennial warm-season grasses including switchgrass (Panicum virgatum L.), big bluestem (Andropogon geradii Vitman), and Indiangrass (Sorghastrum nutans L.) have drawn interest as bioenergy feedstocks due to their high ... -
Planting depth within-field soil variability effects on corn stand establishment and yield
(University of Missouri--Columbia, 2020)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Seedbed conditions during corn (Zea Mays L.) planting can have substantial impact on corn stand establishment and final yield. Optimal stand establishment ... -
Topsoil thickness impact on corn, soybean, and switchgrass productivity and soil nutrient management
(University of Missouri--Columbia, 2016)Topsoil thickness, or depth to claypan (DTC), is a major contributing factor to variability in corn (Zea mays L.) and soybean (Glycine max [L.]) yield, profit, and nutrient dynamics on claypan soils. Understanding how and ... -
Variability of soil hydraulic properties and estimation of plant-available water on claypan-soil landscapes
(University of Missouri--Columbia, 2007)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Soil hydraulic properties and plant-available water (PAW) capacity are critical properties in evaluating land management and soil productivity. This ...