id	keyword
agsci-663	rhizobium
agsci-663	yield
agsci-663	npsb
agsci-663	inoculation
agsci-663	chickpea
agsci-663	ha-1
agsci-663	soil
agsci-663	application
agsci-663	analysis
agsci-663	plant
agsci-663	agricultural