AVAILABILITY OF ADSORBED IONS TO PLANTS GROWING IN QUARTZ SAND SUBSTRATE

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Abstract
Added to sand cultures, K, Ca, Mg adsorbed on permutit. and HNO3, H2SO4, H3PO4, combined with aniline black, produced better growth of kidney beans and soybeans than like quantities of these elements in soln. Increases and decreases in the supply of the adsorbed elements were reflected in the growth of the crop successions: kidney beans, corn, and buckwheat; soybeans, corn, and buckwheat.

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