BIO EFFICACY OF Trichoderma harzianum SPORE CONCENTRATIONS ON GROWTH AND YIELD OF TOMATO

Abstract

An experiment was accomplished in the Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka during the period from October 2017 to March 2018 to evaluate the bio efficacy of spore concentration of Trichoderma harzianum on tomato. Three tomato variety viz. V 1 = Roma -VF, V = BARI Tomato-2, V 3 = Apple Netherland, and Trichoderma harzianum T = No Trichoderma application, T 1 = 10 6 spores/ ml, (7 and 15DAT), T = 10⁷ spores/ml (7 and 15DAT) were used in this experiment arranged in a Randomized Complete Block Design with three replications. Data on different growth and yield attributes parameters were taken in which all the treatment showed significant variations. Among varieties, maximum plant height (111.2 cm), cluster number (7.6/plant), flower number (52.6/plant) and yield/ plant (2.9 kg) were found from variety V (Roma VF) whereas minimum in variety V 2 1 (BARI Tomato-2) and among Trichoderma application, maximum plant height (110.6 cm), cluster number (7.4/ plant), flower number (54.2/ plant) yield/ plant (2.9 kg) found in spore concentration 10 7 / ml (T ). Maximum yield per hectare (91.5 t) were found in V 1 T 2 2 and minimum (84.7 t) in V . Chlorophyll content showed significantly positive correlation with all growth and yield parameters. In view of overall performances, Variety V

spores/ ml Trichoderma harzianum (T ) solution application has potentiality for increased tomato production. 2 1 2 0 2 2 T with 10 0 7