Influence of phosphorus levels and phosphorus solubilising bacteria (PSB) application methods on rice-root nematode population in rice-based cropping system
Abstract
A field experiment was conducted to study the effect of Phosphorus levels (0, 30 and 60 kg/ha) and methods of phosphorus solubilising bacteria (PSB) application (seed treatment, root dip, field application and control – without PSB) on rice– root nematode (Hirschmanniella oryzae) population and grain yield in rice-rice and rice–blackgram systems in vertisol at Directorate of Rice Research (DRR) farm, Hyderabad in split plot design. The results indicated that the P levels and the methods of application of PSB had no influence on the rice-root nematode populations. The nematode build up was higher in rice–rice system and the population decreased in blackgram that followed rice (rice-blackgram system). Phosphorus solubilising bacteria (PSB) application contributed to increased productivity and production in yields in both rice-rice and rice-blackgram rotations.
Keywords
Phosphorus levels, phophorus solubilising bacteria (PSB), rice-root nematode, rice-based cropping system
