RHIZOBIUM SYMBIOTIC MUTUALISM WITH RICE BEAN (VIGNA ADIATA) ROOT HAIR ON THE LAND POLLUTED BY SODIUMHASAN BASRI JUMIN, NUR IKHSAN AND MAIZAR
Combination between Rhizobium and sodium have been interacting effect to production of rice bean seed dry weight. Rhizobium 15 g/kg seeds are more suitable dose for rice been. The effect of sodium to rice bean by growth decline gradually beginning from 0.5 g/kg seed in the soil. Net assimilation rate, mean relative growth rate and seed production was suppressed if high sodium concentration applied in the soil. However under dose of 0.5 g/l sodium was precisely utilized for growth of rice bean, because in low sodium concentration in the soil could replace potassium ion. Application of rhizobium 15 g/kg seed and sodium 0.5 g/l could cause nitrogen necessity efficiency to 136 % and is recommended for optimal plant growth.