ROLE OF MYCORRHIZA HELPER BACTERIA ON MYCORRHIZAL COLONIZATION AND NEMATODE Pratylenchus coffeae INFECTION

The coffee nursery is susceptible to endoparasitic Pratylenchus coffeae. Application of biological method in the suggested control nematode population and maintain seedling health. objectives this study were observe ability Arbuscular Mycorrhiza Fungi (AMF) Glomus spp. liquid inoculant Helper Bacteria (MHB) consortium Pseudomonas diminuta Bacillus subtilis for increasing AMF colonization reducing infection P. coffeae Arabica their growth. A pot experiment was conducted using a Completely Randomized Block Design with four treatments five replications. spore inoculation without two concentrations MHB. treatment did not receive seedlings growing greenhouse three months. results indicated that MHB significantly reduced total number soil roots by approximately 30%; degree 50%. application increased root mycorrhizal fungi, but affect colonization. Seedlings treated had higher shoot length compared plant control; leaves dry weight affected all treatments. Even though fresh after treatment, lateral growth MHB-treated visually improved. demonstrated efficient reduce seedling.