The Application of Bacillus thuringiensis to Treat Root Knots on Pogostemon cablin Benth

Abstract Root knots, caused by Meloidogyne spp. is among the plant pathogens that lead to significant yield loss in patchouli plants. Farmers have used synthetic nematicides control pathogen for many years. In fact, chemicals not only harm environment but also might degrade quality of agriculture products. Therefore, this study, we examined several dosages Bacillus thuringiensis (Bt) on Pogostemon cablin Benth. Three Bt suspension (30, 40, and 50 ml/plant) were applied rhizosphere observe incubation period, disease intensity, number galls, population nematode. The results show 40 ml/plant significantly prolongs time, reduces root-knots. None tested showed a impact nematode population. This study showcases potential More research required confirm efficacy approach.