FORMULATION OF Trichoderma BASED BIOPESTICIDES IN CONTROLING FOOT AND ROOT ROT OF BETELVINE

Abstract

An experiment was conducted at Sher-e-Bangla Agricultural University (SAU) during the period from September 2014 to December 2014 for Formulation and evaluation of Trichoderma based bio-pesticide for controlling foot and root rot of betel vine. The effect of nine Trichoderma based substrates viz., T Peat soil + Rice bran + Water), T 2 1 (Trichoderma + (Trichoderma + Peat soil + Wheat bran + Water), T

(Trichoderma + Peat soil + Lentil bran + Water), T (Trichoderma + Peat soil + Gram bran + Water), T 5 4 (Trichoderma + Peat soil + Black gram bran + Water), T

(Trichoderma + Peat soil + Mustard oil cake + Water), T (Trichoderma + Peat soil + Grass pea bran + Water), T 8 7 ( Trichoderma + Peat soil + Saw dust + Water), T

(Control) were evaluated for growth and sporulation of Trichoderma harzianum and acting against Sclerotium rolfsii for the management of foot and root rot of betel vine. The effect of the treatments varied significantly in terms of production of Trichoderma spore and reducing foot and root rot diseases in comparison to control. Among the treatments, soil application with T 1 (Trichoderma + Peat soil + Rice bran + Water), T (Trichoderma + Peat soil + Wheat bran + Water), T (Trichoderma + Peat soil + Lentil bran + Water), T 4 3 (Trichoderma + Peat soil + Gram bran + Water) and T (Trichoderma + Peat soil + Black gram bran + Water) completely control foot and root rot of betel vine. 5

3 6 9 2 No plants were infected in case of application of T 1 , T 2 , T 3 , T 4 and T while 100% plants were infected in control treatment. 5