Effect of Non-traditional Previous Crops in Rotation Before Potatoes

J.A. Ivany, J. Kimpinski, C. Noronha, R. Peters, and H. W. Platt

Objectives:
To determine potato yield and quality as affected by non-traditional crops (silage corn, soybeans, and canola) grown preceding potatoes in rotation. To compare four weed control treatments (broadcast herbicide, banded herbicide, tillage, and organic (flame weeding)

Status Report:
A nine-year trial was initiated at the Harrington Research Farm (AAFC) in PEI in 1999. Subsequent sites were established in 2000 and 2001. Data are being collected on insect, disease, nematode, and weed changes, as well as soil components and crop yield for all crops. Preliminary results indicate levels of Rhizoctonia solani were least in potatoes after canola and weed infestation levels were lowest in potatoes under organic weed control practices.

Impact:
The typical 3 year rotation for potato production in PEI is barley-(underseeded with) red clover-potatoes. The potato crop is the main income-generating crop in that rotation, while the other crops have limited cash value to the farm and have more value in breaking weed and disease cycles and building soil health. Crops such as silage corn, soybean, and canola are not commonly grown in PEI and unlike red clover and barley can generate more farm income.


Research Establishment:
Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, 440 University Ave, Charlottetown, PEI, C1A 4N6

Funding Sources:
Agriculture and Agri-Food Canada


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