Nour, K. A. M. and Hager I. Tolba( 2015). Evaluation Impact Of Some Plant Growth Promoting Microorganisms On The Growth And Productivity Of CowpeaMiddle East Journal of Agriculture Research ISSN 2077-4605
Volume : 04 | Issue : 03 | July-Sept. | 2015 Pages: 532-544
Abstract: Two field experiments were conducted during two successive summer seasons of 2012 and 2013 at the experimental farm infected with root-knot nematodes (RKN) Meloidogyne sp. and Fusarium sp., at El-Kassasein Research Station, Ismallia Governorate, Egypt, to investigate the effect of microbial inoculation with
Pseudomonas fluorescens , Bacillus subtilis, Rhodotorula mucilaginosa, Candida tropicalis and Saccharomyces cerevisiae in comparison with chemical nematicide on soil microbial counts, soil enzyme activities, number of Meloidogyne sp. larva in soil and roots and Fusarium indication, growth parameters, dry weight, yield and its
components as well as chemical constituents of cowpea. Treating cowpea plants with chemical nematicides significantly decreased total bacterial count and soil enzymes activities and significantly increased vegetative growth, dry weight of leaves, branches and whole plant, seed yield and it's components, nitrogen and protein
percentage. Microbial inoculation of cowpea plants with Pseudomonas fluorescens+Bacillus subtilis+ Saccharomyces cerevisiae significantly increased total bacterial count and soil enzymes activities (Dehydrogenase, Nitrogenase and Chitinase) while, the treatment with P. fluorescens + B. subtilis + Candida tropicalis caused most reduction in number of nematode larva in soil and roots and Fusarium indication in soil. Moreover, significant increases in vegetative growth traits (plant height, number of leaves and branches per plant as well as leaf area), dry weight of leaves, branches and whole plant, root system parameters, seed yield and it's components, nitrogen and protein percentage by microbial inoculation of cowpea plants with P. fluorescens + B. subtilis + Candida tropicalis.
Keywords: (Cowpea, microbial inoculation, soil enzymes, Pseudomonas fluorescens, Bacillus subtilis, Rhodotorula mucilaginosa, Candida tropicalis, Saccharomyces cerevisiae, Meloidogyne sp., Fusarium sp., growth parameters, yield.)
