Effect of nitrogen fixation and phosphate solubilizing bacteria on growth and yield of lowland rice in different soil type

Abstract

Efficiency of nitrogen and phosphate fertilization in soil for rice cultivation could be improved using microorganism biofertilizer. This study aimed to investigate the effect of nitrogen fixation and phosphate solubilizing bacteria on growth and yield trait of lowland rice in alluvial and latosol soils. The experiment was conducted at greenhouse arranged in factorial randomize block design with two factors (soil type and bacterial isolates) and three replications. The first factor was two soil type consisted of alluvial and latosol soils. The results showed that alluvial soil type had the best results on growth and yield more than latosol soil. The filled grain on alluvial soil had number/plant highest of 1,755.5 more than latosol soil. The latosol isolate on alluvial soil had highest for plant height (9.50 cm), 3.33 of tiller number, and 2.0 of panicle number per plant more than alluvial isolate. The interaction of soil type and isolate effects showed no significant response for all traits at generative stage. In term of yield component trait, latosol isolate had better response for grain compared with alluvial isolate, both in alluvial and latosol soils. This finding had potential to latosol isolate further in alluvial and latosol soils.