seed-potato
4.Based on the status of potato production and four-year potato tuber seed propagation system in Pan county, and stable and rapid propagation technology, the present research was carried out to study the high-efficiency and low-cost propagation technologies related to rapid propagation of potato plantlets, minituber propagation in web-house and production of minitubers in field with aims to reducing the production period of virus-free seed tuber.
5.According to plot trial,the number of aphids on potato plants was reduced by 80%～100% compared with control plants when 100 kg seed potatoes were treated with 30～40 g Gaucho. The insecticide effect could last for 3 months after planting or 42 days after first survey for aphids. Seed treatment with Gaucho was comparable to 3～5 times spraying in effect,so Gaucho is worthy of attention and adoption for the control of potato aphids.
