Continuous corn is the most common irrigated crop sequence in southwest Nebraska. Although rotating to other crops, such as soybeans, can mitigate some production issues of continuous corn and often boost the next year’s corn yield, larger adoption of soybeans has not readily occurred in this area.
Weed control in organic soybean usually includes frequent pre-plant tillage operations but spring rains often make it difficult to get into the fields for timely tillage. As a result, weed pressure can be high. Cover crops can help suppress weeds, but after corn harvest it is often too late to establish cover crops. Spring-planting cover crops may be an alternative to fall-planting.
The results of the first year of the study were promising. Across four sites, the improved treatment resulted in an average 8 bu/ac yield increase and $46/ac profit increase compared to the baseline treatment.
Public universities and private companies were contacted early in 2019 to provide input on the study protocol that would compare multiple fertility programs for soybeans in western NE. A total of 12 fertility programs were compared.
Come and join us from 9:30 a.m. - 3 p.m. on Monday, March 2nd, at the Eastern Nebraska Research and Extension Center (1071 County Road G, Ithaca, NE) for the latest information on this newly emerging soybean pest.