Source: Iowa State University

A wonderfully sunny, warm, dry fall can be good for some reasons, but not for nematodes, warns Iowa State University nematologist Greg Tylka. It turns out that 50 degrees F is an important temperature to consider for soybean cyst nematode (SCN).

The winter annual weeds chickweed, henbit and purple deadnettle are good hosts for the SCN. But SCN juveniles do not develop in roots when temperatures are below 50F. So cool fall and spring temperatures usually keep SCN reproduction on these winter annual weeds in check. Such may not be the case this fall.

Original news release