On Monoculture and the Structure of Crop Rotations

Posted: 13 Oct 2006

See all articles by David A. Hennessy

David A. Hennessy

Iowa State University - Department of Economics


An issue when seeking to identify rotation choice is persistence in yield-enhancement and input-saving carry-over effects. Focusing on carry-over length and the monoculture decision, we use quasi-convexity of choice functions to develop price-independent and price-dependent principles concerning rotation structure. Iowa corn-soybean rotation data suggest corn has one-year memory. For corn, soybeans in the prior year is yield increasing (16.5 bu./ac.) and nitrogen saving (51 lb./ac.). The hypothesis that soybean has two-year memory cannot be rejected. Corn in the prior year (two years) increases yield by 7 bu./ac. (11.6 bu./ac.). We simulate to find price and practice subsidy levels that support different rotations.

Suggested Citation

Hennessy, David A., On Monoculture and the Structure of Crop Rotations. American Journal of Agricultural Economics, Vol. 88, No. 4, pp. 900-914, November 2006, Available at SSRN: https://ssrn.com/abstract=937046 or http://dx.doi.org/10.1111/j.1467-8276.2006.00905.x

David A. Hennessy (Contact Author)

Iowa State University - Department of Economics ( email )

260 Heady Hall
Ames, IA 50011
United States
515-294-6171 (Phone)

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