id	keyword
ahs-18406	solution
ahs-18406	et al
ahs-18406	growth
ahs-18406	asao
ahs-18406	nutrient
ahs-18406	cucumber
ahs-18406	root
ahs-18406	plants
ahs-18406	culture
ahs-18406	yield
ahs-18406	hydroponics
ahs-18406	autotoxicity
ahs-18406	sci
ahs-18406	production
ahs-18406	exudates
ahs-18406	asao et
ahs-18406	soil
ahs-18406	fruit
ahs-18406	crop
ahs-18406	acid
ahs-18406	effects