There are several types of herbicides used in mulberry cultivation that not only enhance effectiveness but also reduce costs. According to the Chinese Pesticide Network, here is a detailed overview of some commonly used herbicides and their applications:
1. **Thatched Grass (Fluazifop-p-butyl)**: This herbicide is effective against weeds like dog bud root and white stalk. Apply 0.75–1.0 kg per 667 square meters, mixed with 125 kg of water for soil treatment or foliar spraying. It achieves an 80%–90% control rate and remains effective for about 30 days.
2. **Stable to Kill (Flufenacet)**: Also known as fluorosis, this herbicide is ideal for controlling weeds during the seedling stage of mulberry plants. Use 50 ml of 35% emulsion per 667 square meters, mixed with 15–30 kg of water, when weeds have 3–6 leaves. It works well on both annual and perennial grasses.
3. **Bai Zhu (Glyphosate)**: This herbicide is effective against various annual and perennial weeds, including fragrant aconite, axillary bud root, pig mites, water peanuts, and tendon grass. Apply 1 kg of 15% glyphosate per 667 square meters, mixed with 125 kg of water and 0.15–0.20 kg of washing powder, and spray directly onto the stems and leaves.
4. **Enemy Grass (Oxyfluorfen)**: This herbicide is suitable for controlling broadleaf and grassy weeds. Use 0.5 kg of 25% wettable powder per 667 square meters, mixed with 100–150 kg of water for directed soil application. It has a 79%–95% control rate and can last over 45 days without harming silkworms.
5. **Annihilation (Chlorpyrifos)**: Apply 0.25–0.5 kg of 25% chlorpyrifos per 667 square meters, mixed with 100 kg of water, before weed emergence. It effectively controls double-leaf weeds such as flat storage, piglet, mother-in-law, small convolvulus, and ash, with more than 90% efficacy and lasting over 60 days.
6. **Dimethyltetrachloride (Dichlobenil)**: This herbicide is effective against small convolvulus, thorn buds, flat storage, ash, and fragrant aconite. Use 0.5–0.75 kg of 20% pesticide per 667 square meters, mixed with 100 kg of water for foliar spraying. It achieves an 80%–90% control rate and remains active for 30–45 days.
7. **Fluorin (Fluometuron)**: Ideal for grass-dominated mulberry fields, apply 100–150 ml of 48% emulsifiable concentrate 1 day before sowing, mixed with 50–60 kg of water. Spray it on the topsoil and mix it into the soil to a depth of 3–5 cm. The effect lasts around 60 days.
**Tips from the Pesticide Network**: After applying any of these herbicides, it's recommended to wait at least 15 days before resuming silkworm rearing to ensure the safety of the mulberry leaves. Always follow local guidelines and safety precautions when handling chemicals. Proper application and timing are essential to maximize effectiveness while minimizing environmental impact.
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