RESPONSE OF POTATO GERMPLASM TO Trichoderma viride AS BIO-STIMULATOR

A field experiment was conducted in the Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka during the period from November 2016 to March 2017 to study the performance of potato germplasm with the bio-stimulating effect of Trichoderma application on potato production. Potato germplasm viz., G₁ (Sokal), G₂ (Bijita), G₃ (JP Blue yellow), G₄ (JP Blue white), G₅ (Burma-1), G₆ (Burma-2), G7 (Cardinal as check), and Trichoderma application: T₀ (No application), T₁ (Once application), T₂ (Twice application) were used in this experiment arranged in Randomized Complete Block Design with three replications. Data on different growth and yield attributes were showed significant variations. Among them, the highest plant height, maximum leaf number, SPAD value, stem number, tuber length, tuber weight observed in germplasm Sokal with twice application of Trichoderma. Maximum yield per hectare (38.92 t) were found in G₁T₂ and minimum (21.7 t) in G₄T₀. In view of overall performances, germplasm G₁ with twice application of trichoderma (G₁T₂) has the potentiality for potato production with higher vegetative growth and yield.