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. Like all nematodes the soybean cyst nematode scn has six life stages egg four juvenile stages j1 j4 and the adult stage the duration of the scn life cycle runs from 3 4 weeks but this may be influenced by environmental conditions mainly adequate temperature and moisture. In 1895 the sugarbeet cyst nematode bcn heterodera schachtii was first discovered in the us in utah and wasnt identified in michigan until 1948 bcn is responsible for ninety percent of all nematode related sugarbeet damage in michigan this nematode is a key pest that can significantly lower sugarbeet yield and. The potato cyst nematode of major concern in north america is g rostochiensis or the golden cyst nematode which is characterized by gold colored females it is under strict quarantine regulations in north america a related species identified in 2006 in a field in idaho is g pallida or the pale cyst nematode
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