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Subjects corn Remove constraint corn: corn Subjects economic analysis Remove constraint economic analysis: economic analysis Subjects alfalfa Remove constraint alfalfa: alfalfa

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1. Agronomic and Economic Performance Characteristics of Conventional and Low-External-Input Cropping Systems in the Central Corn Belt

Description:: Includes references
Author:: Liebman, M. , Gibson, L.R. , Sundberg, D.N. , Heggenstaller, A.H. , Westerman, P.R. , Chase, C.A. , Hartzler, R.G. , Menalled, F.D. , Davis, A.S. , Dixon, P.M.
Subject:: Zea mays , corn , agronomic traits , economic analysis , profitability , low input agriculture , Glycine max , soybeans , field crops , Trifolium pratense , forage legumes , Medicago sativa , alfalfa , forage crops , nitrogen fertilizers , fertilizer rates , crop rotation , herbicides , weed control , weeds , Iowa
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2008

2. Crop Productivity and Economics during the Transition to Alternative Cropping Systems

Description:: Includes references
Author:: Archer, D.W. , Jaradat, A.A. , Johnson, J.M.F. , Weyers, S.L. , Gesch, R.W. , Forcella, F. , Kludze, H.K.
Subject:: Zea mays , corn , Triticum aestivum , wheat , Glycine max , soybeans , Medicago sativa , alfalfa , crop yield , grain yield , profitability , conservation tillage , crop rotation , input costs , economic analysis , organic production , conventional tillage , fertilizer rates , organic foods , food prices
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2007