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May, W
Miller, R
Miner, G
Mikha, M
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Authors
Delgado, J.A
Halvorson, A
Villacis-Aveiga, A
Del Grosso, S
Stewart, C
Manter, D
Alwang, J
Floyd, B
D'Adamo, R
Miner, G
Mikha, M
Miller, R
Topics
Soil Fertility
Type
Oral
Poster
Year
2020
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Authors

Filter results3 paper(s) found.

1. Assessment of Long-term Effects of Tillage and Nitrogen Management Practices on Irrigated Corn Yields and Nitrogen Use Efficiencies

Corn grain yields and crop nitrogen uptake are affected by management factors such as tillage intensity and nitrogen rates. Additional data about the long-term effects of tillage and nitrogen rates on yields and nitrogen use efficiencies of irrigated corn are needed. We are presenting preliminary results from a 17-year study about the effects of these management practices on irrigated corn yields and nitrogen uptake in a Fort Collins clay loam soil at Colorado State University’s Agricultural... J.A. Delgado, A. Halvorson, A. Villacis-aveiga, S. Del grosso, C. Stewart, D. Manter, J. Alwang, B. Floyd, R. D'adamo, G. Miner

2. Tillage and Nitrogen Rates Influenced Wheat and Sorghum Productivity

Reduced tillage (RT) or no-tillage (NT) practices and reducing fallow frequency can both decrease soil losses from wind erosion and conserve soil water in the semiarid regions of the US Great Plains. This study evaluated sorghum grain yield in 2013 and wheat grain yield in 2014 and 2015 as influenced by long-term nitrogen (N) fertilizer application rates (0, 20, 40, and 60 lb N ac- 1) and tillage intensity [clean tillage (CT), RT, and NT] in dryland winter wheat–sorghum-fallow (W-S-F) cropping... M. Mikha

3. Assessment of Soil Testing As It Relates to Corn Ear Leaf Nutrition in the Midwest

Soil testing for P, K and Zn for corn production the Midwest is based on the probability of crop yield response to an applied fertilizer and not on crop nutritional status. Results of three years of observational data from 98 field sites show soil test M3-K only predicted 26% of the variability in ear leaf K at growth stage R1-R2, whereas K base fraction (KBF) predicted 44% of the ear leaf variability and 56% of the variability in the ear leaf K:Mg ratio. Soil M3-P was inconsistent in predicting... R. Miller