Vol. 6, Issue 3 (2017)

Author(s):
Surender Kumar, Shweta Jaiswal, Abhilasha A Lal, Amit Kumar and Ankur Verma

Abstract:
Leaf spots are the most serious diseases of groundnut (Arachis hypogaea L.) on a worldwide scale. The two fungi commonly involved are Cercospora arachidicola Hor causing early leaf spot, and Cercospora personatum (Berk. & Curt.). A field trail was conducted to efficacy the effectiveness of botanicals namely neem oil, garlic oil and onion oil and bio-control agents Trichoderma harzianum and Pseudomonas fluorescens against leaf spot disease (tikka) of groundnut caused by Cercospora Spp. Pseudomonas fluorescens @ 5% foliar spray led to a significant reduction of disease incidence (20.1%) followed by Trichoderma viride @ 5% (FS) (22.19%), neem oil @ 5% (FS) (23.29), garlic oil @ 4% (FS) (23.70), onion oil @ 4% (FS) (24.4) compared to treated and untreated control (27.90 and 20.12). Maximum cost benefit ratio was recorded Pseudomonas fluorescens @ 5% (FS) 1:2.05.