Search Results - "Westfall, G. D."

Evaluation of two crop canopy sensors for nitrogen variability determination in irrigated maize by Shaver, T. M, Khosla, R, Westfall, D. G

“…Advances in precision agriculture technology have led to the development of ground-based active remote sensors that can determine normalized difference…”
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Economic feasibility of variable-rate nitrogen application utilizing site-specific management zones by Koch, B, Khosla, R, Frasier, W.M, Westfall, D.G, Inman D

“…Variable-rate technology (VRT) has been developed to variably apply crop inputs to manage in-field variability. Although growers have begun to adopt VRT, its…”
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Soil sorptivity enhancement with crop residue accumulation in semiarid dryland no-till agroecosystems by Shaver, T.M., Peterson, G.A., Ahuja, L.R., Westfall, D.G.

“…Water capture and precipitation use efficiency are of great importance in dryland cropping systems because the world's dependence on food produced in dryland…”
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Evaluation of Two Ground-Based Active Crop Canopy Sensors in Maize: Growth Stage, Row Spacing, and Sensor Movement Speed by Shaver, T.M, Khosla, R, Westfall, D.G

“…Precision agriculture research has been directed toward enhancing the efficiency of N inputs by quantifying in-field variability. Remotely sensed indices such…”
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Cropping Intensity Enhances Soil Organic Carbon and Nitrogen in a No‐Till Agroecosystem by Sherrod, L. A., Peterson, G. A., Westfall, D. G., Ahuja, L. R.

“…Soil organic C (SOC) has decreased under cultivated wheat (Triticum aestivum)‐fallow (WF) in the central Great Plains. We evaluated the effect of no‐till…”
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Comparison of site-specific management zones: soil-color-based and yield-based by Hornung, A, Khosla, R, Reich, R, Inman, D, Westfall, D.G

“…Numerous techniques of management zone delineation have been studied; however, few comparisons between techniques exist in the literature. The objectives of…”
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Soil organic carbon pools after 12 years in no-till dryland agroecosystems by Sherrod, L.A, Peterson, G.A, Westfall, D.G, Ahuja, L.R

“…Previous studies of no-till management in the Great Plains have shown that increased cropping intensity increased soil organic carbon (SOC). The objectives of…”
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Surface Soil Physical Properties After Twelve Years of Dryland No‐Till Management by Shaver, T. M., Peterson, G. A., Ahuja, L. R., Westfall, D. G., Sherrod, L. A., Dunn, G.

“…Water is the principle limiting factor in dryland cropping systems. Surface soil physical properties influence infiltration and cropping systems under no‐till…”
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Nitrogen uptake across site specific management zones in irrigated corn production systems by Inman, D, Khosla, R, Westfall, D.G, Reich, R

“…Development of improved fertilizer management practices has the potential to increase fertilizer use efficiency and improve environmental quality. The…”
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Precision Manure Management on Site-Specific Management Zones: Topsoil Quality and Environmental Impact by Moshia, M. E., Khosla, R., Davis, J. G., Westfall, D. G., Doesken, K.

“…Maintenance and improvement of soil quality across spatially variable soils in continuous cropping systems are critical to sustaining agricultural productivity…”
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Evaluating Soil Color with Farmer Input and Apparent Soil Electrical Conductivity for Management Zone Delineation by Fleming, K. L., Heermann, D. F., Westfall, D. G.

“…Variable rate fertilizer application technology (VRT) can provide an opportunity to more efficiently utilize fertilizer inputs; however, accurate prescription…”
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synthesis of multi-disciplinary research in precision agriculture: site-specific management zones in the semi-arid western Great Plains of the USA by Khosla, R, Inman, D, Westfall, D. G, Reich, R. M, Frasier, M, Mzuku, M, Koch, B, Hornung, A

“…Researchers from Colorado State University, in collaboration with scientists from the United States Department of Agriculture (USDA), initiated a long-term…”
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The role of particulate organic matter in phosphorus cycling by SALAS, A. M, ELLIOTT, E. T, WESTFALL, D. G, COLE, C. V, SIX, J

“…In tropical cropping systems, a better understanding of P transformations and short-term P cycling during decomposition of incorporated residues is pertinent…”
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Active remote sensing and grain yield in irrigated maize by Inman, D, Khosla, R, Reich, R. M, Westfall, D. G

“…Advances in agricultural technology have led to the development of active remote sensing equipment that can potentially optimize N fertilizer inputs. The…”
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Solution Chemistry Influence on Metal Mobility in Biosolids‐Amended Soils by Al‐Wabel, M. A., Heil, D. M., Westfall, D. G., Barbarick, K. A.

“…ABSTRACT Many studies have implicated dissolved organic carbon (DOC) as an important contributor to the elevated mobility of trace metals in soils amended with…”
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Measurement of electrons from open heavy-flavor hadron decays in Au+Au collisions at sNN = 200 GeV with the STAR detector by Adamczyk, L., Aggarwal, M. M., Ahammed, Z., Barish, K., Bhatta, S., Caines, H., Cebra, D., Chang, Z., Christie, W., Daugherity, M., Dhamija, A., Didenko, L., Dixit, P., Flor, F. A., Galatyuk, T., Ghimire, N., Gupta, A., Hamed, A., Hu, Q., Huang, S. L., Ju, X., Kabana, S., Kagamaster, S., Keane, D., Kisel, I., Ko, H. S., Kosarzewski, L. K., Kramarik, L., Landgraf, J. M., Lebedev, A., Leung, Y. H., Li, Y., Li, Z., Liang, X., Lin, T., Liu, G., Ma, R., Ma, Y. G., Magdy, N., Markert, C., Mioduszewski, S., Mohanty, B., Mondal, M. M., Mooney, I., Neff, D., Nishitani, R., Okubo, K., Pak, R., Pan, J., Paul, A., Pawlik, B., Pokhrel, B. R., Putschke, J., Quintero, A., Raha, N., Reed, R., Roy Chowdhury, P., Sahoo, A. K., Sako, H., Salur, S., Sato, S., Schmitz, N., Seger, J., Seto, R., Shao, T., Sharma, S. R., Shen, D. Y., Shi, S. S., Si, F., Sinha, P., Srivastava, B., Sun, Y., Sun, Y., Sweger, Z. W., Tomkiel, C. A., Truhlar, T., Tsai, O. D., Ullrich, T., Van Buren, G., Verkest, V., Videbæk, F., Voloshin, S. A., Wang, F., Wang, J. S., Wang, Y., Wu, Y., Xu, H., Xu, Y., Yan, G., Yang, Y., Zhang, D., Zhang, X., Zhang, Y., Zhang, Z. J., Zhao, J., Zhou, J., Zhou, S., Zhou, Y., Zhu, X., Zurek, M.

“…A bstract We report a new measurement of the production of electrons from open heavy-flavor hadron decays (HFEs) at mid-rapidity (| y | < 0.7) in Au+Au…”
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Normalized Difference Vegetation Index and Soil Color-Based Management Zones in Irrigated Maize by Inman, D, Khosla, R, Reich, R, Westfall, D.G

“…Spectral vegetation indices such as the normalized difference vegetation index (NDVI) have been shown to be useful for indirectly obtaining crop information…”
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Evaluation of an in situ net soil nitrogen mineralization method in dryland agroecosystems by Kolberg, R.L. (USDA, ARS, Sidney, MT.), Rouppet, B, Westfall, D.G, Peterson, G.A

“…Direct quantitative measurement of soil net N mineralization in agricultural soils under field conditions has not been widely used. A potential method of in…”
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Precision Manure Management across Site‐Specific Management Zones: Grain Yield and Economic Analysis by Moshia, M. E., Khosla, R., Longchamps, L., Reich, R., Davis, J. G., Westfall, D. G.

“…Precision manure management is a relatively new concept that merges the best agronomic and manure management practices along with precision agricultural…”
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Soil water storage in dryland cropping systems: the significance of cropping intensification by Farahani, H.J. (USDA, ARS, Water Management Research Unit, Fort Collins, CO.), Peterson, G.A, Westfall, D.G, Sherrod, L.A, Ahuja, L.R

“…Soil and water conservation is essential to the sustainability of Great Plains dryland agriculture. We hypothesized that cropping intensification improves the…”
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