Enhancement the Suppressive Effect of Date Palm Leaves Compost (DPLC) against Faba Bean Wilt with Plant Growth Promoting Rhizobacteria (PGPR)

Document Type : Original Article

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Legume and Forage Crop Dis. Res. Dep., Plant Pathol. Res. Inst., ARC, Egypt

Abstract

This study deals with in vitro, greenhouse and field efficacy of plant growth promoting rhizobacteria (PGPR) strains and date palm leaves compost (DPLC) for controlling faba bean wilt caused by Fusarium oxysporum. Date palm leaves compost at 2,4,6,8,10 ton/feddan significantly decreased wilt severity under artificial inoculation with Fusarium oxysporum in pot and the natural infection in the field, as well as increased growth and yield parameters during 2013/2014 growing season. Date palm leaves compost at 8 ton/feddan recorded the highest protection against faba bean wilt as well as gave the highest increase of plant growth and yield parameters. On the other hand, PGPR, viz. Bacillus megaterium, B. cereus and Pseudomonas fluorescens individually or in combination significantly increased the efficacy of DPLC for controlling Fusarium wilt of faba bean more than application of DPLC alone under greenhouse and field conditions during both growing seasons (2014/2015 and 2015/2016) as well as increased nodulation, plant growth and yield parameters. Application mixture of PGPR strains together with DPLC at 8 ton/feddan recorded the highest reduction to wilt severity with the highest increase of nodulations, plant growth and yield parameters.

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