In Tran Van Thoi district's communes of Khanh Binh Dong, Tran Hoi, and Khanh Hung, a unique agricultural practice has been adopted, where vegetables, especially squash, gourd, and okra, are cultivated on field sidewalls after rice harvest. This secondary crop has the potential to earn a substantial income for the farmers, with some making hundreds of millions of dong. Pham Van Phuong's family, for example, made a profit of 150 million dong from growing squash on 2.7 hectares. The district plans to expand this successful model across 500 hectares, but faces challenges such as the need for an improved irrigation system and earlier land preparation for rice sowing.