Assertion: compaction's effect | /r/HasProperty | studied in a field experiment
Facets:
value: in australia
type: LOCATION
value: by kirkegaard et al
type: OTHER
Source sentences:
text: The effects of soil compaction on the growth and seed yield of pigeon pea (Cajanus cajan L.) in a coastal oxisol were studied in a field experiment in Australia by Kirkegaard et al.