Summary
This field trial examined how additions of Azolla and beef bone meal influence the nutrient profile of livestock-based organic fertiliser derived from beef cattle manure and laying hen excreta. The work contributes to understanding how locally available biological and mineral amendments can enhance the nutrient density of on-farm organic fertiliser products, potentially improving their agronomic value for smallholder systems. The study aligns with broader interests in closing nutrient loops and optimising manure-based soil amendments in tropical livestock farming.
UK applicability
Whilst the tropical Indonesian context and specific feedstock combinations differ from UK conditions, the methodological approach to nutrient enrichment of composite manure products has potential relevance for UK organic and regenerative farming operations seeking to optimise homemade fertiliser formulations.
Key measures
Nutrient concentration (N, P, K and trace elements) in organic fertiliser products; treatment comparisons across Azolla and beef bone meal amendment rates
Outcomes reported
The study evaluated the nutrient composition of livestock organic fertiliser (LOF) produced from beef cattle manure and laying hen excreta when amended with Azolla (an aquatic fern) and beef bone meal. Nutrient content metrics including nitrogen, phosphorus, potassium and other elements were measured across different amendment treatments.
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