EFFICACY OF TRICHODERMA SPP. AGAINST FUSARIUM PALLIDOROSEUM (COOKE) SACC. CAUSING WILT OF CHILLI (CAPSICUM ANNUM L.)
Abstract
Author(s): A.G. Najar, S.A. Ganie and A.H. Lone
In this project, two-function monomer of bisphenol A-glycidyl (BIS-GMA) was synthesized using diglycidyl ether bisphenolA epoxy resin (DGEBA) and methacrylic acid in the presence of a suitable Antago nistic activity of six species of Trichoderma viz., Trichoderma viride (S), Trichoderma viride (M), Trichoderma viride (C), Trichoderma harzianum (S) Trichoderma harzianum (M) and Trichoderma harzianum (C) against Fusarium pallidoroseum (Cooke) Sacc inflicting wilt of chilli was studied under both in vitro and in vivo conditions. Under in vitro conditions maximum inhibition of F. pallidoroseum was recorded by T. viride(S) (60.53%) followed by T. harzianum (S) (47.37%) while T. harzianum (M) (27.80%) proved least effective in inhibiting mycelial growth. In experimental chilli field with history of wilt incidence evaluation of six species of Trichoderma against F. pallidoroseum of chilli was conducted by dipping seedlings separately in spore suspension of (106 spores ml-1) of test biocontrol agents prior to transplanting. T. viride (S) and T. harzianum (S) were most promising followed by T. viride (C) and T. viride (M). All the bio-inoculants delayed mortality until fruit formation stage, increased plant stand and reduced significantly wilt incidence. Key words: Trichoderma, Fusarium pallidoroseum , Fusarial wilt, Chilli, Efficacy, Inhibition
