GROWTH AND YIELD RESPONSE OF POTATO GERMPLASM TO TRICHODERMA AS BIO-STIMULATOR

Abstract

A field experiment was accomplished in the Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka during the period from November 2016 to March 2017 to evaluate the bio-stimulating effect of Trichoderma on potato germplasm. Potato germplasm viz. G 1 (Sokal), G 2 (Bijita), G 3 (JP Blue yellow), G 4 (JP Blue white), G

(Burma-1), G 6 (Burma-2), G 7 (Cardinal as check) and Trichoderma application : T (No trichoderma application), T 1 (Once application), T (Twice application) were used in this experiment arranged in Randomized Complete Block Design with three replications. Data on different growth, physiological and yield attributes parameters were taken in which all the treatment showed significant variations. Among germplasm, maximum tuber length (8.98 cm), tuber weight (133.4 g), yield/ hill (0.54 kg), dry matter content (17.48 %) were found from G 1 2 (Sokal) whereas minimum in germplasm G (JP Blue white) and for trichoderma application, maximum tuber number (5.05), tuber length (7.75 cm), tuber weight (106 g), total yield (34.4 t), dry matter percentage (19.99) found in twice application. Maximum yield per hectare (38.92 t) were found in G

and minimum (21.7 t) in G 4 T . Trichoderma two times spray significantly decreased the disease infestation. In view of overall performances, germplasm G 0 with twice application of trichoderma has potentiality for quality potato production.