Circular models from major crop by-products in Can Tho City, Vietnam

The study aims to evaluate the status of major crop cultivation and propose circular models for developing agricultural by-product resources in Can Tho City, Vietnam. The proposed circular model aims to limit the use of raw materials for economic activity and minimize environmental impact by reducing the reliance on the environment as a sink for waste solids and emissions. The implementation methods included collecting data from the Department of Crop Production and Plant Protection, as well as relevant document sources. The main crop groups surveyed include rice, vegetables, longan, durian, star apple, mango and jackfruit. Among them, the three crops with the largest planted area are rice, vegetables and mango, which were selected for developing the circular models. A SWOT analysis was conducted to propose four groups of economic, social and environmental solutions to support the development of a circular model for these crops. The results were compiled from interview data from 36 experts, from which we analyzed six favorable factors, five complicated factors, five opportunity factors and six challenging factors affecting the circular models. It is possible to expand the scope of research on the circularity of the proposed products and delve deeper into the technology and production processes for each product within each circular model. It is an essential foundation for developing sustainable green agriculture in the future.