Last week was the Soybean Management and Research Transfer field day in Carman.
During the day, Don Sanders, a masters of science candidate with the University of Manitoba, presented his research on crop rotation for soybeans. He studied two-year rotations, planting four different crops the first year, and only soybeans the next.
Sanders says going into the research, he thought planting soybeans on where soybeans had grown the previous year would have the worst effect on yield. The provincial average found producers who grew soybeans on soybeans had a five per cent yield hit compared to growing soybeans on corn or wheat. However, his research showed different results.
"We found at one site in 2013, the soybean on soybean was actually the best, and then the year after, soybean on soybean was the worst. Beyond that, things were fairly consistent," he says. "It really depends on your field, I think... and year-to-year variability is always going to be big.
Source : PortageOnline