Effect of Some Organic Residues on Yield Productivity: A review

Abstract

Sustainable management of low fertile arid soils using carbon-rich organic amendments such as biochar and compost is of great concern from both agricultural and environmental points of view. The impact of pyrolysis, composting, and co-composting processes of different feedstocks on carbon loss and emissions, soil properties, and plant growth in arid soils with low organic matter content has not been sufficiently explored yet. the aim of this work was to investigate the effects of the pyrolysis, composting, and co-composting processes on the properties of the produced biochar, compost, and co-composted biochar from rice straw and sugarcane bagasse, and examine the impact of addition of biochar, biochar, compost, compost, co-composted RS biochar, and co-composted biochar on soil properties, carbon emission and growth of plant. Carbon loss was significantly lower during the preparation of the compost and co-compost –biochair than biochair. The C/N ratio of the compost and co-compost –biochair were narrow than the corresponding values of biochairs. All amendments increased significantly soil organic carbon content as compared to the non-amended control. All amendments increased dry weight, total chlorophyll content, root and shoot length, as compared to the control. Moreover, all  amendments organic compound showed a positive soil carbon balance. The modified integrated two-way ecological model data also indicated that the co-composted biochar, particularly RSCB is a promising amendment to improve soil quality and plant growth in sandy arid soils.