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Authors Karlen, D.L. Remove constraint Karlen, D.L.: Karlen, D.L. Authors Jaynes, D.B. Remove constraint Jaynes, D.B.: Jaynes, D.B. Year 2004 Remove constraint 2004: 2004

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1. Relationship of corn and soybean yield to soil and terrain properties

Description:: Includes references
Author:: Kaspar, T.C. , Pulido, D.J. , Fenton, T.E. , Colvin, T.S. , Karlen, D.L. , Jaynes, D.B. , Meek, D.W.
Subject:: Zea mays , corn , Glycine max , soybeans , grain yield , agricultural soils , soil chemical properties , soil physical properties , soil fertility , spatial variation , topography , fields , landscapes , Iowa
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2004

2. Using the late spring nitrate test to reduce nitrate loss within a watershed

Description:: Includes references
Author:: Jaynes, D.B. , Dinnes, D.L. , Meek, D.W. , Karlen, D.L. , Cambardella, C.A. , Colvin, T.S.
Subject:: watersheds , water pollution , pollution control , water quality , nitrate nitrogen , leaching , testing , tile drainage , surface water , chemical concentration , nitrogen fertilizers , fertilizer rates , application timing , Zea mays , corn , grain yield , statistical models , Iowa
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2004