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Crop Productivity and Economics during the Transition to Alternative Cropping Systems

^a USDA-ARS, Northern Great Plains Research Lab., P.O. Box 459, 1701 10th Ave. SW, Mandan ND, 58554
^b USDA-ARS, North Central Soil Conservation Research Lab., 803 Iowa Ave., Morris MN 56267
^c Univ. of Florida, North Florida Research and Education Center, 3925 Hwy. 71, Marianna, FL 32446

View larger version (14K): [in this window] [in a new window]   Fig. 1. Net returns including organic price premiums for each rotation entry point (YF treatments only) averaged over years 2002 to 2005. Rotation entry points denoted by the crop planted in 2002 as A, alfalfa; C, corn; S, soybean; W, spring wheat; CNV, conventional system; ORG, organic system; CT, conventional tillage; ST, strip tillage; C-S, corn–soybean rotation; C-S-W/A-A, corn–soybean–wheat/alfalfa–alfalfa rotation; YF, fertilizer or manure applied at recommended rates. Error bars represent standard errors.