Long-term nitrogen use and nitrogen-removal index in continuous crops and rotations

Author: Yamoah C.F.   Varvel G.E.   Waltman W.J.   Francis C.A.  

Publisher: Elsevier

ISSN: 0378-4290

Source: Field Crops Research, Vol.57, Iss.1, 1998-05, pp. : 15-27

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Abstract