Assertion: urea | /r/HasProperty | wu
Facets:
Source sentences:
text: Treatments were established as: (1) no plastic film mulching with urea (NU), (2) no plastic film mulching with controlled release fertilizer (NC), (3) white plastic film mulching with urea (WU), (4) white plastic film mulching with controlled release fertilizer (WC), (5) black plastic film mulching with urea (BU), and (6) black plastic film mulching with controlled release fertilizer (BC).