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. Nematode and life cycle soybean cyst nematode is the plant parasitic worm heterodera glycinesscn can only reproduce on only a few hosts such as soybean and snap bean and scn cannot reproduce on crops such as corn cotton peanut tobacco or wheat non host crops
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