About: http://webisa.webdatacommons.org/184600551

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Crops such as rye or wheat sown over winter before planting a spring crop shade out weeds and have an allelopathic effect, ie they excrete chemicals which prevent weed seed germination
http://www.w3.org/ns/prov#wasQuotedFrom	paraquat.com