what is an soybean cyst nematode
The soybean cyst nematode (SCN), Heterodera glycines, is a plant-parasitic nematode and a devastating pest of the soybean (Glycine max) worldwide. The nematode infects the roots of soybean, and the female nematode eventually becomes a cyst. Infection causes various symptoms that may include chlorosis of the leaves and stems, root necrosis, loss in seed yield and suppression of root and shoot growth.