Recent Trends in Organic Corn and Soybean Yields on WICST (2002-2009)

Several factors have been identified for improvement including weed control, seed treatment, stand densities, fertility, and improved hybrids from concurrent UW research. Weed control was a continuous struggle, especially in wet springs (Posner et al 2008). After 2-3 years of mediocre organic corn and soybean yields, and one crop failure, many changes were imposed in 2006. Corn seeding rates were increased; improved tools were acquired including a tine weeder, a high-residue rotary hoe, and a disk-hiller row cultivator. Weeding frequency and timing were adjusted to keep weeds from getting too big or numerous.

Authors: J. Hedtcke and J. Posner