Thangavel Selvaraj
College of Agriculture and Veterinary Sciences,
Ambo, P.O. Box 19
Ethiopia
Research Article
Evaluation of Arbuscular Mycorrhizal Fungi and Trichoderma Species for the Control of Onion White Rot (Sclerotium cepivorum Berk)
Author(s): Ararsa Leta and Thangavel SelvarajArarsa Leta and Thangavel Selvaraj
The present study was carried out to evaluate the indigenous Arbuscular Mycorrhizal Fungi (AMF) and
Trichoderma species isolated from rhizosphere soils of onion cultivated fields at Ambo and Toke Kutaye districts of West Showa, Ethiopia, and their effect on plant growth, and their biocontrol against onion white rot caused by Sclerotium cepivorum Berk. Five species with twenty isolates of Trichoderma were isolated and screened in vitro for the inhibition of S. cepivorum. Out of these, four isolates of Trichoderma spp viz. T. harzianum (ATh1), T. viride (ATv1), T. hamatum (NThm3), and T. koningii (QTk2), were found potent antagonists with mean percent inhibition of the pathogen, 65.4, 64.8, 54.3 and 53.5, respectively. Altogether, 10 AMF species representing four genera viz. Acaulospora, Gigaspora, Glomus, and Scutellospora, were isolated and identified. Six dominant species of A.. View More»
DOI:
10.4172/2157-7471.1000159