Corn (Zea mays L.) residue management for soybean (Glycine max L.) production: On-farm experiment
Walther, Patrick + "A."
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The large amount of corn residue left after harvest is associated with challenges for farmers growing corn in Manitoba. This project looks at the impact of different tillage equipment to manage corn residue on soybean and soil conditions. The experiment was set up as an on-farm trial in four locations in Manitoba on sandy soils. Four tillage practices were compared: 1) conventional double disc; 2) vertical till high disturbance; 3) vertical till low disturbance and 4) strip till. Differences in soil temperature and moisture as a result of residue management treatments did not lead to significant differences in soybean emergence and final plant stand in three out of four site-years. At harvest, soybean grain yield did not vary significantly among treatments (p=0.6267, CV 6.65%) in all site-years. Economic analysis identified significant time and cost savings for strip till compared to the other treatments.