By Matt Hutcheson, CCA, Product Manager, Seed Consultants, Inc.
Typically, soybeans may begin to show symptoms of Soybean Cyst Nematode (SCN) damage by July 1. SCN is a parasitic roundworm that feeds on the soybean root system. The cyst stage of the nematode’s life cycle is when the female nematode is filled with eggs. Cysts are visible throughout the summer on soybean roots and will appear as small, white, and lemon-shaped. After the female matures, these cysts are hard to see. When trying to identify SCN presence on soybean roots, it is important not to confuse cysts with Rhizobium nodules (where N fixation takes place).
How can you determine if SCN is causing damage and yield loss to your soybeans? Injury symptoms include yellowing and stunting of plants. These symptoms may appear in patches of a field. These patches may grow from year to year; especially in the direction a field is tilled.… Continue readingRead More »