Assertion: black walnut | /r/ObjectUse | used the oak root fungus
Facets:
value: because of their resistance to phytophthora
type: CAUSE
value: as rootstocks for j. regia cultivars
type: TRANSITIVE-OBJECT
value: widely
type: DEGREE
value: in california commercial production
type: LOCATION
Source sentences:
text: In California commercial production, the Hinds' black walnut (J. hindsii) and the hybrid between J. hindsii and J. regia, Juglans x paradox, are widely used as rootstocks for J. regia cultivars because of their resistance to Phytophthora and to a very limited degree, the oak root fungus.