Assertion: fertilizer's use | /r/HasProperty | questioned regarding potential environmental impact
Facets:
Source sentences:
text: The use of P containing starter fertilizers on these high testing soils has been questioned both regarding the necessity of P in the starter and the potential environmental impact of adding P to soils that are already high in P. Recent research has shown that in some instances there is a benefit to adding starter fertilizer for corn even on high testing soils.