Potato virus disease is the main disease on potato, and it is a more serious hazard, which causes an important reason for potato degradation and production reduction. There are many types of this disease, including: mosaic type, necrotic type, and leaf type. The main pathogenic characteristics of mosaic type: different yellow and green patches appear on the leaves. The top young leaves are heavier than the lower old leaves. The leaf veins show the symptoms of dark green and light green mosaics. The mosaic leaves are divided into light and heavy flowers. leaf. Heavy leaves appear to reduce the symptoms such as plant dwarfing, and light leaf blades do not deform, the plant does not dwarf. Necrotic lesions appear dark brown spots of necrosis, severe when dead or fall off the whole leaf. The leaf-wrapped leaves are axially and internally rolled into a tubular or scoop shape with the main vein. The diseased leaves fade in color, become hard and brittle, break easily, and sometimes the leaves are purple. When the disease is serious, plant growth stagnates or premature death, and the diseased plant new potato block is small. The leaf-rolled virus is mainly transmitted by locusts, and the incidence is heavier in spring and lighter in autumn.
Control methods:
1. Agricultural control: Select disease-resistant varieties, autumn seed crops, make it rejuvenate to reduce the degree of disease and degradation rate. Early spring sowing early harvest in early autumn sowing appropriate late sowing can avoid the impact of high temperature and reduce the incidence of degeneration.
2. Drug control: In the initial stage of disease, use 20% virus A wettable powder 400-600 times or virus K wettable powder 1200-1400 times or 1.5% viral emulsion 1000 times or 10% 83 booster 600-1000 times, Spray once every 10 days, even spray 2-3 times, because in recent years the best continuous medication with silicone additives to increase efficacy, which also has more obvious results.
Hongxing Factory
Dongying Hongxing is located at Dongying City, Shandong Province China since 1995.
We have 30 categories of products, including Covid-19 products, frock, protection shoes, safety belt, Special gloves.
Our main customer in China is Sinopec, Petro China, Energy company, steel company and Tabacco Company in other countires. Our factory have 500workers and 22 technical employees and invest thirty eight million dollars .
FAQ
1. What are your main products ?- Safety shoes
- Protective helmet
- Work clothes
- Safety cloves
- Protective equipment and masks
2. Can you offer OEM ?
Our company accep OEM service , if you need, please inform us of your specific requirements
3. What's your mode of transportation ?
By sea, By air, By train, By truck, as your request. We also do a good job to deliver goods to your destination.
4. What's your payment terms ?
T/T, L/C, Paypal..... If you need to pay via other ways, please negotiate with us.
5. Can you offer sample ?
Yes, we can offer samples to help you check type and quality.
6. Are you manufacturer or trader ?
We have own factory in Donying city, Shandong province, welcom to visit our factory !
Men'S Work Suit,Uniform Coverall Suit,Engineering Oil Uniform,Anti Static Oil Uniform
Dongying Hong Xing Labor Protection Products Co.,Ltd. , https://www.hongxinglabor.com