Assertion: yam's cultivation | /r/HasProperty | constrained by oca weevil
Facets:
Source sentences:
text: Cultivation is also constrained by the Andean potato weevil (Premnotrypes spp), ulluco weevil (Cylydrorhinus spp), and oca weevil, the identification of which remains uncertain (possibly Adioristidius, Mycrotrypes, or Premnotrypes).