id	keyword
economy-2537	sorghum
economy-2537	production
economy-2537	efficiency
economy-2537	farmers
economy-2537	access
economy-2537	ghana
economy-2537	level
economy-2537	study
economy-2537	size
economy-2537	journal
economy-2537	district
economy-2537	sorghum production
economy-2537	extension
economy-2537	coefficient