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Abstract
This study investigated the response of soil fungi to various organic amendments; earthworm cast (EC), poultry manure (PM), and inorganic fertiliser (urea) and their impact on the growth of amaranth (Amaranthus cruentus L. The experiment aimed to bridge the knowledge gap regarding the effects of organic amendments on fungal communities and their potential benefits for sustainable amaranth production. The experiment was done using a complete randomised design (CRD) and replicated three times, using soil and a plastic container. Results showed that organic amendments significantly influenced the composition of soil fungal communities compared to the control treatment. Notably, Trichoderma spp., a fungus with high phosphate solubilization potential, was most abundant in urea-amended soil. However, poultry manure (PM) treatment yielded plants with the highest fresh and dry matter weight, likely due to increased nutrient availability and microbial activity stimulated by the breakdown of organic matter. The study showed that PM amendments improved soil health, promoting the growth of beneficial fungi like Trichoderma spp., and enhancing amaranth growth, potentially contributing to sustainable agricultural practices
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