Sweet potato production usually uses potato seedlings for cuttings. Before cutting, using plant growth regulators to treat can promote rooting, shorten the seedling recovery period, and improve the survival rate. Plant growth regulators that promote rooting mainly include acetic acid and triacontanol.
- Naphthaleneacetic acid(NAA)
Before cutting sweet potato seedlings, soak one end of the cut end of the seedlings with 10mg/L naphthaleneacetic acid solution for 5~10min, which can promote cutting rooting, shorten the seedling recovery period, and improve the survival rate.
- Triacontanol
Before cutting sweet potato seedlings, soak the base of the seedlings with 0.5mg/L triacontanol for 30min, which can promote cutting rooting, shorten the seedling recovery period, and improve the survival rate. The concentration should be strictly controlled during application, and nutrient fertilizers such as potassium dihydrogen phosphate can be added.