Optimizing initial feedstock ratios reduced NH3 emissions during co-composting of macadamia husk and cattle manure: Bacterial succession suppresses urease and promotes nitrification

Key Points

• The study shows a significant reduction in NH3 emissions during co-composting of macadamia husk and cattle manure.
• A reduction of 25% in NH3 emissions was noted at optimal feedstock ratios within two weeks.
• Analysis focused on bacterial succession dynamics, revealing that certain bacteria suppress urease activity and enhance nitrification efficiency.
• Findings highlight the importance of optimizing feedstock ratios for effective nutrient management in composting processes.