Production of sweet corn generates massive agricultural wastes, particularly corncobs, which are usually incinerated, resulting in environmental and health issues. Converting wastes into biochar through slow pyrolysis offers an environmentally friendly option. Biochar is a carbon-rich by-product that improves soil properties such as pH, nutrient status, water retention, and microbial activity. Farmyard manure (FYM), a traditional soil conditioner, also improves soil fertility through the introduction of organic matter and nutrients. Current studies show that the mixing of biochar with FYM has complementary impacts, significantly improving soil structure, nutrient absorption, and yield of crop. This combined strategy enhances sweet corn cultivation through sustainable farming, reduction of environmental stress, and soil sustainability. Application of FYM in combination with sweet corn waste for the production of biochar is a viable method of efficient waste management and climate-resilient agriculture

Pyrolysis, cob biochar, pervious, farmyard manure, fertilizers, sustainable agriculture

The conglomerate application of farmyard manure (FYM) and biochar with inorganic fertilizers has exhibited promising results in enhancing the soil quality, productivity and quality of sweet corn. FYM improves the soil organic carbon and encourages microbial growth, leading to improved physical and biological status of soil. Likewise, biochar produced from corncobs enriches the physico-chemical properties of soil, carbon sequestration, nutrient availability and retention, lowered bulk density, and stimulates microbial activity because of its porous nature and nutrient-dense content. The FYM releases nutrients quickly into the soil, which may not be available for utilization by plants, whereas the biochar releases the nutrients slowly into the soil and improves the soil structure and fertility in the long run. The FYM is prone to volatilization losses quickly, whereas biochar has good nutrient retention capacity and reduces leaching losses. Therefore, application of FYM and cob biochar will complement eachother's benefits and improve soil physicochemical properties and increase the grain yield when compared to sole application of either FYM or cob biochar. Hence, integrated nutrient management using FYM, cob biochar, and inorganic fertilizers is the best way to promote sustainable sweet corn production which improves physicochemical and biological properties of soil in long run

Uppada Thanuja and Kuna Chinna Rao (2025). A Review: Synergistic Effects of FYM and Cob Biochar on the Growth and Yield of Sweet Corn (Zea mays L. saccharata). Biological Forum, 17(5): 63-67