NEMAHARI- AN EFFECTIVE PLANT BASED FORMULATION FOR CONTROL OF ROOT KNOT DISEASE IN MULBERRY

摘要

In order to evaluate effectiveness of Nemahari - a plant based formulation developed for control of root knot disease of mulberry, on-farm trials were conducted in Andhra Pradesh, Tamil Nadu and Karnataka. The data showed significant (P<0.01) decreasein number of root knots, increase in number of leaves per plant and leaf yield due to treatment with Nemahari compared with untreated control in all the three states. The average number of root knots per 50g fresh root ranged between 0.20-5.23 in the treated plants against 3.17-13.73 observed in the untreated control plants. The average number of leaves per treated plants was ranged from 172.80-226.83. However the average number of leaves per plant in the untreated control plants ranged from 149.07-204.80/ plant. Similarly, the average yield/ plant varied between 580.07-822.40g in Nemahari treated plants against 461.50-741.83g in case of untreated control. The maximum disease control and yield increase were 94.78% and 21.73% respectively due to the treatment However average disease control was 76.07% and increase in yield was 13.42%. The formulation is therefore found effective in all the places and suitable for control of root knot disease of mulberry.