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Apr 30, 2023Keywords:
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Main Article Content
Characterization of Microbial Community of Turmeric (Curcumin longa) Rhizosphere Treated with Diverse Organic Waste and Effect on Yield
Abstract
In this study, the impact of the addition of various organic manure on soil microbial community during turmeric growth was investigated. The organic treatments were poultry manure, swine waste, cocoa husk and cow dung applied at the rate of 6 t/ha, while NPK (15:15:15) fertilizer applied at the rate of 400 kg/ha was used as the standard to compare the organic waste and absolute control (no fertilization). The results showed that each organic treatment had a distinct rhizosphere microbial community and improved the physiochemical properties of the soil. The soil treated with poultry manure had 6 bacterial and 3 fungal isolates, swine waste gave 4 bacterial and 2 fungal, soil treated with cow dung had 6 bacterial and 2 fungal, while cocoa husk had 4 bacterial and 3 fungal isolates. NPK, absolute control and pre-cropping had only one bacterial isolate (E. coli) and no fungi. The result of the yield showed poultry manure (22.28 t/ha), cow dung (20.66 t/ha), cocoa husk (20.39 t/ha), swine waste (16.17 t/ha), NPK (10.61 t/ha) and zero application (3.11 t/ha). A positive correlation was observed between microbial load and soil mineral content and microbial load and plant yield.
