Proceedings :: North Central Soil Fertility Conference

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Yost, M.A

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Walker, Z.T

Yost, M.A

Coulter, J.A

Russelle, M.P

Yost, M.A

Russelle, M.P

Coulter, J.A

Schmitt, M.A

Sheaffer, C.C

Randall, G.W

Topics

Type

Oral

Year

2014

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Filter results2 paper(s) found.
1. Accuracy of Credits and Soil Indicies for Predicting Nitrogen Response in Corn Following Alfalfa Corn is the most frequent first- and second-year crop following alfalfa in the upper midwestern United States. In the majority of reported cases, there is little need for additional fertilizer N to optimize yield of first-year corn following alfalfa. For second-year corn following alfalfa, fertilizer N is needed in about one-half of cases and the economically optimum N rate (EONR) has varied greatly in responsive fields. The objective of this research was to use literature data to evaluate the accuracy... Download paper
2. Stand Age Affects Fertilizer Nitrogen Response in First-Year Corn Following Alfalfa Through a symbiotic relationship with soil bacteria, alfalfa can acquire nitrogen (N) from the atmosphere, use the N for its own growth, and contribute large amounts of N to subsequent crops. To estimate this N contribution, most land-grant universities use book-value N credits based on alfalfa stand density at termination. However, a recent literature analysis indicated that alfalfa stand density is not a reliable predictor of grain yield response to fertilizer N in first-year corn. That analysis... Download paper

Filter results2 paper(s) found.

1. Accuracy of Credits and Soil Indicies for Predicting Nitrogen Response in Corn Following Alfalfa

Corn is the most frequent first- and second-year crop following alfalfa in the upper midwestern United States. In the majority of reported cases, there is little need for additional fertilizer N to optimize yield of first-year corn following alfalfa. For second-year corn following alfalfa, fertilizer N is needed in about one-half of cases and the economically optimum N rate (EONR) has varied greatly in responsive fields. The objective of this research was to use literature data to evaluate the accuracy...

Download paper

2. Stand Age Affects Fertilizer Nitrogen Response in First-Year Corn Following Alfalfa

Through a symbiotic relationship with soil bacteria, alfalfa can acquire nitrogen (N) from the atmosphere, use the N for its own growth, and contribute large amounts of N to subsequent crops. To estimate this N contribution, most land-grant universities use book-value N credits based on alfalfa stand density at termination. However, a recent literature analysis indicated that alfalfa stand density is not a reliable predictor of grain yield response to fertilizer N in first-year corn. That analysis...

Download paper