Abstract
With its direct or indirect reliance on agriculture for a living, the Indian economy is heavily dependent on this industry. Food insecurity is a result of decreased agriculture productivity due to growing contamination and pollution. Biochar is an organic carbon bound environment friendly material known for enhancing soil functions and plant growth. On the other hand, compost is an organic, nutrient-rich product that is formed by an aerobic process and is used as an amendment. Both of these have numerous benefits as amendment in the soil-plant system. This is a complete study on the effects of applying biochar and compost separately and in combination at ratios of 0 %, 1 %, and 2 % in a cadmium contaminated soil (0 mg/kg, 4 mg/kg and 8 mg/kg Cd). Their effect was studied on the soil characteristics, seed germination, morphology, photosynthetic pigments, oxidative stress, enzymatic and non-enzymatic antioxidant activity in spinach plant grown in contaminated soil in Chhattisgarh state, India. The results depicted that combination of biochar and compost was beneficial in improving soil-plant productivity. Compost and biochar mixtures improved the soil quality and decreased Cd concentration. When comparing the biochar-compost combination to either biochar or compost alone, the plant morphological changes and chlorophyll content increased to a greater extent in their combined application. Proline content and enzymatic activities were similarly enhanced in the biochar-compost mixture. Their amendment showed effective potential in improving spinach growth and development in the polluted soil.
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