id	keyword
american_scientific_journal-3945	tillage
american_scientific_journal-3945	soil
american_scientific_journal-3945	season
american_scientific_journal-3945	yield
american_scientific_journal-3945	wue
american_scientific_journal-3945	grain
american_scientific_journal-3945	varieties
american_scientific_journal-3945	moisture
american_scientific_journal-3945	rainfall
american_scientific_journal-3945	biomass
american_scientific_journal-3945	water