Nat Williams, Field Editor
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“The research shows that if hemp leaves fall they compost in the ground and work into the soil,” Gain said. “That compost kills 50 percent of the soil-borne cyst nematodes. So just by rotating soybeans with the hemp crop you could eliminate problems with insects and diseases, potentially.”
 
Full Article:
http://agrinews-pubs.com/Content/News/MoneyNews/Article/Hemp-in-rotation-could-help-fight-cyst-nematode–advocate-says-/8/27/9432