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2013
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Authors
Andraski, T.W
Asebedo, A.R
Ballard, T
Bartelt-Hunt, S
Biswas, S
Blackmer, T.M
Board, J
Bolstad, P.V
Boring, T
Brown, H
Bu, H
Camberato, J.J
Clark, R
Cook, K
Cook, R.L
Coulter, J.A
Delgado, J.A
Diaz, D.R
Donk, S.V
Edwards, C.L
Ehrman, D
Enderson, J.T
Ferguson, R.B
Florence, R
Foster, T.J
Franzen, D
Franzen, D.W
Grassini, P
Gray, J
Guffain, P
Haq, M.U
Henry, C
Jaynes, D
Jenks, A.C
Kaiser, D.E
Kent, W
Kitchen, N.R
Kranz, W
Kyveryga, P.M
Laboski, C
Lee, C
Lee, J
M Laboski, C.A
Mader, T
Mallarino, A.P
Mamo, M
McAfee, B
Mengel, D
Mengel, D.B
Mica, C
Miller, D
Motavalli, P.P
Naeve, S
Nafziger, E.D
Nelson, K.A
Niekamp, J.W
Rathmann, N
Reeg, P.R
Ries, L
Ritchey, E
Ross, W.J
Russell, K
Russelle, M.P
Sanford, D.V
Sawyer, J
Schaefer, D
Schulz, L
Shapiro, C
Sharma, L
Shelton, D
Snow, D
Steinke, K
Stevens, L.J
Tarkalson, D
Thelen, K
Thurgood, L
Vonk, J.P
Vossenkemper, J.P
Widmar, A
Wolkowski, D
Wortmann, C
Yost, M.A
Zhang, T
Zurweller, B.A
Topics
Type
Oral
Year
2013
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1. Determining In-season Nitrogen Requirements for Maize Using Model and Sensor Based Approaches

There is great value in determining the optimum quantity and timing of nitrogen (N) application to meet crop needs while minimizing losses. Applying a portion of the total N during the growing season allows for adjustments which can be responsive to actual field conditions which result in varying N needs. Two methods of determining in-season N needs were evaluated, a model-based approach and a crop canopy sensor approach. The Maize-N model was developed to estimate the economically optimum N fer...

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