Browsing Texas Tech University by Author "Maas, Stephan J."
Now showing items 1-9 of 9
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Dynamics of Soil Aggregation, Organic Carbon Pools, and Greenhouse Gases in Integrated Crop-Livestock Agroecosystems in the Texas High Plains
Fultz, Lisa (2012-08)In the Texas High Plains (THP), marked by limited water availability and low soil fertility, management (i.e. tillage, irrigation, crop selection) has great potential to impact soil quality factors, in particular soil ... -
Estimation of crop water use for different cropping systems in the Texas High Plains using remote sensing
Rajan, Nithya (Texas Tech University, 2007-12)The spectral crop coefficient (Ksc) is a novel approach for estimating the water use of field crops. In this study, Ksc is evaluated from remote sensing observations (satellite or aircraft imagery) of the field in question ... -
Nitrogen nutrition estimation of cotton using greenness and ground cover
Muharam, Melissa (2012-08)Conventionally, plant N status is obtained destructively using tissue leaf N or petiole sap nitrate readings. In recent years, spectral analysis methods, including the chlorophyll meter technique, have gained popularity ... -
Spatial and temporal variability in cotton yield in relation to soil apparent electrical conductivity, topography, and remote sensing imagery
Guo, Wenxuan (Texas Tech University, 2005-12)Analysis of data from multiple fields over several years provides the ability to determine under what conditions precision agriculture may be suitable. The objectives of this study were to: a) evaluate the spatial variability ... -
Spatial and temporal variability in cotton yield in relation to soil apparent electrical conductivity, topography, and remote sensing imagery
Guo, Wenxuan (2005-12)Analysis of data from multiple fields over several years provides the ability to determine under what conditions precision agriculture may be suitable. The objectives of this study were to: a) evaluate the spatial variability ... -
The effects of variable-rate seeding on dryland cotton yield in West Texas
Brosch, Steven Glen (2008-05)West Texas has long been a major producer of cotton. Due to the decline of available water for irrigation, more land is being converted to dryland cotton production. Producers must find more efficient ways to maintain the ... -
The use of gypsum to ameliorate soil sodicity in irrigated cotton production on the Southern High Plains of Texas
Chemnitz, Quint (2007-12)The purpose of this project is to reduce the exchangeable sodium within the soil by the addition of gypsum. Even though the addition of gypsum is the standard reclamation technique for sodic soils, its effectiveness has ... -
Thermal imagery and spectral reflectance based system to Monitor crop condition
Nayak, Shriniwas Surendra (2005-12)Remote sensing has gone a long way from being a scientist’s tool to being frequently used by local farmers for day-to-day irrigation decisions. Use of aircraft and satellite for remote sensing is expensive and does not ... -
Three Essays on the Economics of Precision Agriculture in Cotton Production
Nair, Shyam (2011-05)Precision agriculture technologies aim at adjusting input application rates to spatial and temporal requirements of the crop increasing the input use efficiency and reducing the negative environmental impact associated ...