In recent years, peanut root rot occurs in our city year by year, and it can be affected in every growth period. The incidence of heavy flowering and fruiting is heavy. The incidence rate is about 10%, and when severe, it can reach 20% to 30%.
First, the symptoms
Seedling period: before the emergence of peanuts, it damages germinating seeds and causes bad seeds. Onset of seedlings, pathogens infested the ground floor of peanut seedlings, the main root turned brown, and the plants were short and withered. In the adult stage, chronic symptoms usually appear. The main root and neck are splayed with long-spotted brown lesions, and the roots are wet and rot. The diseased plants exhibit short stature, poor growth, yellow leaves, and few flowering results. As a result, the whole plant eventually withered. Since the disease is mainly located in the roots and vascular bundles, the roots of the diseased plants turn brown and rot, the vascular bundles turn brown, and the main roots shrink and dry rot, resembling mouse tails, and the surface of the affected area has a yellow-white to reddish mildew layer.
Second, transmission routes and conditions
The bacteria live in the soil and live in the soil for several years. It belongs to vascular bundle parasites, which can block the catheter and secrete toxins to cause the plants to wither. The pathogens are mainly spread by soils, flowing water, fertilization, pine roots and other agricultural operations. Seedlings are often overcast and heavy with heavy humidity. Even for the field, soil shallow, sandy land easy to disease. Overly dense planting, branches and leaves too lush or overgrown, poor ventilation and ventilation, resistance to disease decreased, after heavy rain, conducive to the occurrence of peanut root rot.
Third, control methods
Take comprehensive cultivation and prevention measures, which mainly include disease prevention and chemical supplements.
1. Turn off the good seeds. Do a good job of seed collection, selection, drying, storage and other items; sowing seeds before sowing, remove color, rotten, damaged seeds, and seed weight 0.3% of 40% carbendazim wet powder dressing.
2. Reasonable rotation. The sick field is in every year round, and the sick field rounds for 3 to 5 years. It can be rotated with wheat, corn and other grass crops, and avoid interplanting with soybeans and sweet potatoes.
3. Timely row and irrigation. It is strictly forbidden to pour water in full bloom, before rain, or after long drought. In the afternoon, you should not use shallow water to avoid scalding the roots of peanuts. After the heavy rain, we must do a good job of field drainage.
4. Apply base fertilizer. With the addition of phosphorus and potassium fertilizers, the applied manure should be fully decomposed.
5. Remove the diseased plant. The diseased plants found in the field should be immediately removed and burned in a concentrated manner. Irrigate and sterilize the pathogenic strains in the affected area to prevent the spread of germs. After the peanuts are harvested, field plants and diseased bodies are removed in time.
6. Prevent disease control in a timely manner. After the seedlings were found, the diseased plants were then sprayed or sprayed to block the central diseased plants. Use 80% of allicin 1000 times liquid with leaf foliar spray to control the spread of the disease. Can also be used 70% thiophanate-methyl 500 to 800 times or 85% trichloroisocyanuric acid soluble powder 1500 times, every 7 to 10 days spray 1, even spray 2 to 3 times.
We are a chinese origin manufacturer , we majored in producing rubber products for almost 10 years , which allows us to offer a wide range products for you . Our products now are widely used in clinical injection, transfusion and other packaging. We now have a 100-100000 class cleaning workshop which meets the GMP standard. From input to output, we have a strict quality control throughout the whole production line. We have full test instruments and tools according to the standard documents.
Butyl Rubber Stopper For Film Coated
Butyl Rubber Stopper For Film Coated,Stopper For Film Coated,Silicone Rubber Stopper,Butyl Bottles Silicone Rubber Stopper
SUZHOU CRH PHARMACEUTICAL TECHNOLOGY CO.,LTD , https://www.crh-health.com