Agronomic Benefits of Shubhodaya-Mycorrhizal Bio-Fertilizer on Banana Production in Embu County, Kenya

Abstract

Background and Objective: Banana (Musa spp.) fruit yields in Kenya ranges from 4.5-10 tons per hectare per annum compared to the international levels of 40-50 t. This low production is attributed majorly to poor soil fertility management. This study was carried out to evaluate the effect of shubhodaya-mycorrhizal bio-fertilizer on banana productivity in Embu County. Materials and Methods: The experiment was set up in 5 sites distributed in different agro-ecological zones within Embu County. Application of treatments was preceded by soil chemical analysis to determine the soil fertility status. There were 6 treatments designated as T1: 5 g of NPK (13:2:44) fertilizer (control), T2: 5 g NPK+20 g bio-fertilizer, T3: 5 g NPK+30 g bio-fertilizer, T4: 5 g NPK+40 g bio-fertilizer, T5: 5 g NPK+50 g bio-fertilizer and T6: 50 g bio-fertilizer alone. The experiment was laid out in a randomized complete block design with 4 replications. A tissue culture banana cv. Gal was used as the test crop. Results: Soil analysis results indicated low soil fertility status characterized by acidic pH and low levels of macro and micronutrients. Treatment T5 produced the highest growth rate and weight of first bunch. Sole application of the bio-fertilizer at a rate of 50 g produced better results than when integrated at lower rates with the inorganic fertilizer. Conclusion: Shubhodaya mycorrhizal bio-fertilizer can serve as alternative eco-friendly source of plant nutrients in banana production.