Composting of Cow Dung and Food Waste under Aerobic Conditions for the Improvement of Soil

Abstract

Composting organic materials like cow dung and food waste is a sustainable method to enhance soil quality by recycling nutrients back into the ecosystem. This study explores the aerobic composting process, which involves the microbial breakdown of organic matter in the presence of oxygen, leading to the production of nutrient-rich compost. Cow dung and food waste, both abundant in organic carbon and essential nutrients, were composted under controlled aerobic conditions to assess their impact on soil fertility and structure. The composting process was monitored over several weeks, with parameters such as temperature, moisture content, pH, and carbon-to-nitrogen (C/N) ratio being closely observed. The results indicated that the temperature peaked during the thermophilic phase, facilitating the breakdown of organic matter and pathogen reduction. The C/N ratio decreased from an initial value of approximately 30:1 to 15:1, indicating efficient decomposition. The final compost was applied to lateritic soil, commonly found in tropical regions, to assess its impact on soil properties. The treated soil showed significant improvements in terms of enhanced nutrient content, increased organic matter, better moisture retention, and improved soil structure. This, in turn, led to better plant growth and higher yields, demonstrating the effectiveness of composting cow dung and food waste under aerobic conditions. The study concludes that aerobic composting of cow dung and food waste is a viable strategy for improving soil fertility and sustainability in agriculture practices. It not only reduces organic waste but also provides a cost-effective and environmentally friendly means of enhancing soil health.