Integration of Seed Treatments, Seedling Dip Treatments and Soil Amendments for the Management of Bakanae Disease in Paddy Variety Pusa Basmati 1121

摘要

Bakanae disease of rice caused by Fusarium fujikuroi is widespread in all rice growing countries of the world and is of great concern especially in Basmati paddy. Different management practices viz. seed treatments, seedling dip treatments and soil amendments were integrated for the management of bakanae disease in Paddy variety Pusa Basmati 1121. Seed treatment with carbendazim (Bavistin) and Trichoderma viride gave 22.7 and 11.4% control of the disease. However, the disease incidence did not vary much amongst different seed treatments under FYM+T. viride treated soil conditions. Seed treatment with bavistin and T. viride gave 10.1 and 10.2% disease, respectively as against 10.3% in crop grown from untreated seed under FYM+7. viride soil condition.Seedling dip in 0.2% bavistin or 0.4% T. viride solution before transplanting significantly reduced the disease incidence. Seedling dip treatments with bavistin and T. viride solutions resulted in 55.5 and 34.5% control of the disease, respectively, irrespective of soil amendments. The disease incidence was 10.3 and 11.8% in FYM+7. viride treated soil and T. viride treated soil, respectively as against 13.6% in untreated soil. The highest disease incidence (27.3%) was recorded in non-amended soils (control) transplanted from nursery of untreated seeds and the seedlings dipped in plain water at the time of transplanting. The disease control in FYM+7. viride treated soil and T. viride treated soil was statistically at par and significantly superior to untreated soil. The grain yield in plots transplanted from all the seed treatment and seedling dip treatment were statistically superior to plots transplanted from nursery raised from untreated seed and seedling dipped in plain water.