Great Influences Of Various Lime Ratios On Yield And Accumulation Of Maize In Arsenic Contamination Soils And Irrigation Water

Abstract

The objective of this study asserted lime influences on the As absorbability and yield of maize. The field experiment was carried out with five treatments to be included five different liming rates: 0, 1,2,3 and 4 t CaCO₃/ha (M0, M1, M2, M3 and M4) and NPK fertilizer with four replications. The positive relation between As contents of the deep well waters and maize soils (r=0.69515**), maize seeds with maize soils (r=0.674**) were high correlation coefficients. Arsenic contents of maize stems in lime added treatments were lower than control treament (M0) from 15.2% to 74.2%. The fresh maize yields of M1, M2, M3 and M4 (1, 2, 3 and 4 t CaCO₃/ha) were higher than 2.20, 31.6, 44.0 and 52.0% compared to control treatment, respectively. The higher rates of liming addition were the lower As content in maize stems and without as accumulation in seeds. This study will promote to design lime addition methods to improve soil nutrients and thus ameliorated plant yield in agricultural systems.