Effect of compost enriched with actinomyces and Bacillus polymyxa algae as a partial substitute for mineral N in Ewaise Mango orchards.
El-Khawaga A. S.
Author Affiliation: Hort. Dept., Fac. of Agric Qena, South Valley Univ., Qena, Egypt.
Research Journal of Agriculture and Biological Sciences 8 : 191-196
Abstract : During 2009 and 2010 seasons the organic fertilizer, compost enriched with actinomyces as well as the biofertilizer Bacillus polymyxa algae were used as a partial replacement for mineral N fertilizer in Ewaise mango orchards. Results revealed that reducing the percentage of mineral N fertilizer from 100 to 50% and at the same using compost enriched with actinomyces at 25 to 50% and Bacillus polymyxa had an announced promotion on leaf area, total chlorophylls, leaf N, P and K, yield as well as quality of the fruit comparing with using mineral N alone. A great decline on the nitrite in the pulp was noticed with using compost enriched with actinomyces and Bacillus polymyxa along with using mineral N. Reducing mineral N to 25% out of the suitable N caused an adverse effects on the yield. Application of the suitable N via 50% inorganic N+compost enriched with actinomyces at 50%+Bacillus polymyxa algae had an announced promotion on the yield quantitively and qualitatively in Ewaise mango orchards. This promised treatment greatly declined nitrite in the pulp fruit.