Influence of aluminum in nutrient solutions on chemical composition in two rice cultivars at different growth stages

Abstract

A solution culture experiment was conducted using 2 rice cultivars (EEA 304, and CICA 4) to determine the effects of Al concentrations on chemical composition. The treatments consisted of five Al concentrations: 0, 10, 30, 40 and 60 ppm. Aluminum content in plant tissues way increased with increasing levels of Al in two cultivars. Increased Al concentrations in the nutrient solution exerted an inhibiting effect on the uptake of N, P, K, Ca, Mg, S, Fe, B, Cu, Zn, and Mn. Rice cultivars responded differently to Al treatments with respect to nutrients uptake. Tolerant cultivar, EEA 304, absorbed more phosphorus compared to susceptible cultivar CICA 4. Macro and micronutrients inhibiting effect was much lower in this Al tolerant cultivar. These results suggested that one of the Al tolerance mechanism in rice cultivars is associated with more efficient nutrients uptake. © 1985 Martinus Nijhoff/Dr W. Junk Publishers.