In the first 20 to 25 days of plant growth, the crop must be kept weed-free. There should be 3 to 4 weedings overall. When the seedlings are two weeks old, the first weeding is carried out, and successive weedings are carried out every 25 days after that. One-handed weeding at 20–25 days after planting, followed by the pre-emergence application of Basalin 48 EC (1.5 kg a.i./ha) or Stomp 30 EC (0.75 kg a.i./ha), efficiently suppresses the weed development.