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WC MN | We have aphids, nematodes and fungal problems today that weren't existent 30 years ago in our area. We never heard of white mold as of 2 years ago. We have to spray for aphids every year. Soybeans used to be on a 5 or 6 crop rotation with corn, wheat, oats, alfalfa, buckwheat and beans.
"Here", bean yields have stayed steady in the last 20 years. Maybe up a couple bushel.
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