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Studies on the physiological effect of humic acid. 6. Studies on the chelating action of nitro-humic acid in the solution containing iron and copper


, : Studies on the physiological effect of humic acid. 6. Studies on the chelating action of nitro-humic acid in the solution containing iron and copper. Nippon Dojohiryogaku Zasshi 42(7): 286-290

When soyabean seedlings were grown in culture solutions containing 0-0.32 ppm Cu as CuCl2, Cu-nitrohumate (Cu-NHA) or Cu-EDTA chelate, the absorption of Cu increased with increasing Cu levels and most of the Cu absorbed accumulated in the roots. Cu uptake was in the order : CuCl2 >Cu-NHA >Cu-EDTA.

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