RADIATION EFFECTS ON PLANTS GROWN IN SOIL TREATED WITH FERTILIZER CONTAINING P32

Abstract

Barley and oats were grown in the greenhouse on soils that had received surface applications of KH2PO4 solns. containing O to 12,500 microcuries P32 per g. P31. Over this range, which includes concns. much higher than those usually used in plant nutrition studies, differences in dry wt. of tops, P content of tops, and % of P in the tops derived from the fertilizer were too small to affect appreciably the data gained by use of the isotope.