嶋田, 典司

SHIMADA, Noritsugu

Efficiency of the Ammonium Chloride Fertilizers on the Vegetable Crops. Noritsugu SHIMADA, Yukio SATO, Koji MATSUO and Michiya KOJIMA. Faculty of Horticulture, Chiba University, Matsudo, Japan. Tech. Bull. Fac. Hort. Chiba Univ., No.25: 5-12, 1977. The field experiments were carried out in 1974 (humid year) and 1975 (arid year) to elucidate the efficiency of the ammonium chloride fertilizers on turnip (var. Kanamachi Kokabu), japanese radish (var. Natsumino No.2) and carrot (var. Kuroda Gosun). 1) Efficiencies of the ammonium chloride fertilizers on the yields of turnip and japanese radish were greater than or equal to those of ammonium sulfate and urea. 2) Relatively high efficiency with ammonium chloride fertilizers was disccused with respect to the degree of base saturation of the soil used in the experiments. 3) EC values and the contents of chlorine in the soils and the concentrations of chlorine in the vegetables were increased with the application of ammonium chloride fertilizers, but the visible injury in the vegetables did not make in an appearance so far as nitrogen was applied with the chloride form in an ordinary amount (N, 15Kg/10a). 4) PH values of the soils applied the ammonium chloride fertilizers were more reduced slightly than that of the urea plot, but as same as that of the ammonium sulfate plot. 5) Calcium and magnesium concentrations in the tops of both turnip and japanese radish were more increased with the application of the ammonium chloride fertilizers than that of the ammonium sulfate.