economics of alternative rotations
DESCRIPTION
Economics of Alternative Rotations. North Central Research Association March 11, 2004. Rotation Considerations. Impact on yields Impact on costs, especially nitrogen and pesticides Relative market prices Government program considerations. Rotation Considerations. - PowerPoint PPT PresentationTRANSCRIPT
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Economics of Alternative Rotations
North Central Research Association
March 11, 2004
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Rotation Considerations
Impact on yields Impact on costs, especially nitrogen and
pesticides Relative market prices Government program considerations
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Rotation Considerations- Seven alternative rotations
- Continuous corn, Spring and Fall N- CCCO- CSb- CSbCO- CCOM- COMM
- Four N levels- 0, 80, 160, 240
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Assumptions
N at $.25 per pound Corn after corn $164 variable cost First year corn $152 variable cost Oats $36 plus P and K removed variable
cost; $1.25 per bu., 44, 50 lb. small square bales at $1.75 per bale
Hay $84 plus P and K removed variable cost; $80 per ton
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Conclusions
Soil types have significant impact on results Corn soybean rotation and CSbCO relatively
equal in returns Price does have an impact Very pronounced yield impacts which are
partially offset by N level
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Corn on Corn vs. Corn on Soybeans; Long Term Field Studies
Rotation fertility studies from 1979 Rotations: CC, CSb, CCSb, CCCSb, Sb 4 N levels: 0, 80, 160, 240 Data from Ken Peckinovsky and Antonio
Mallarino
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Conclusions Evaluate the whole rotation, not a single crop Soil types have significant influence on results Corn yields increase for corn following any other
crop Corn/Soybean is the most profitable rotation with
CCSb second under normal conditions Significant pest pressure with more severe impact
on soybean yields will influence the results Market prices influence most profitable rotation but
C/Sb still is most profitable