Assertion: walnut's juglone | /r/CapableOf | keep walnut trees
Facets:
value: by making soil
type: MANNER
Source sentences:
text: Juglones, allopathic compounds contained in all parts of walnut trees but most intensely in the roots, keep walnut trees free of pests and weeds by making soil touched by the trees chemically inhospitable to a variety of other plants.