Cadmium Hoard and Production of Rice, Corn and Mungbean Swayed by Lime and Different Soils

Abstract

The main goal of the research found out influences of limes and field soils on the Cd hoard of rice, corn and mungbean. There were two field experiments of rice, corn and mungbean with the soil inside and outside the dike in three communes (Long Binh, Khanh Binh and Khanh An) with two CaCO₃ rates (0.0, and 5.0 tons/ha). The experiment 1 and 2 included 18 and 6 treatments, respectively and four replications. Results presented that Cd concentration of rice seeds was the highest and lowest level of corn seeds. Plant seeds of Khanh An had The maximum Cd content and the minimum Cd level of plant seeds in Long Binh. The average Cd content of plant seeds of the soil inside the dyke was higher than 36.9% that of the soil outside the dike. The seed Cd content of 5.0 tons CaCO₃/ha was lower than 51.0 % that of non lime amendment. The lime amendment had the Cd hoard of stems and seeds of three plants which was lower than without lime application. Yields of the soil outside the dike of rice, corn and mungbean were higher than 20.5, 22.3 and 15.0%, those of the soil inside the dike,  respectively. Yields of lime treatments of rice, corn and mungbean had higher than 17.9, 14.8 and 12.0%, those of without lime application,  respectively. The lime amendment and the soil outside the dike was the perfect method to lessen the Cd store and increase the yield of crops.