Dosage of Chitosan Seed Soaking in Agriculture
Release：2026.09.08Dosage of Chitosan Oligosaccharides for Seed Soaking in Agriculture
Function: Improve germination rate and germination uniformity; induce seed immunity, reduce soil‑borne diseases such as damping‑off at seedling stage; promote radicle growth and enhance seedling resistance to low temperature and drought.
Note: Conduct small‑scale trials before large‑field application.
1. Recommended Concentration (chitosan‑oligosaccharide technical material)
- General seed‑soaking concentration: 50‑150 ppm (0.005%‑0.015%), suitable for most grain and vegetable crops.
- Sensitive small‑size seeds (lettuce, tobacco): 50‑80 ppm. Excessive concentration will inhibit germination.
- Large hard‑shell seeds (peanut, corn): 100‑150 ppm. Use higher dosage priority under low‑temperature sowing conditions.
For commercial 5% chitosan‑oligosaccharide aqueous solution: dilute 350‑800 times.
2. Soaking Duration at room temperature 20‑25℃
Crop type | Soaking Time | Remarks |
Wheat, Rice | 6-12 hours | Rice: 12 hours; Wheat:6-8 hours |
Corn, Peanut | 8-12 hours | 10-12 hours recommended for peanut sown under low temperature to improve cold-resistant germination |
Solanaceous Crops(tomato,pepper) | 4-6 hours | Do not soak untilradicle breaks out; conduct germination acceleration after soaking |
Cucurbit Crops(cucumber, watermelon) | 4-6 hours | Thin seed coat; avoid over-soaking |
Small leaf-vegetable seeds(cabbage,Lettuce) | 2-4 hours | Long soaking may cause seed rot |
Potato seed tubers | 30-60 min | Soak after cut wounds are dried;avoid long-time immersion of tubers |
