At the end of August and early September, walnuts have been close to the harvest season and are also a frequent occurrence of walnut disease. This season, walnut disease is prone to diseases mainly anthrax, if not prevented, will inevitably have a greater impact on the output and quality of the year.
Anthracnose is a major hazard to walnut fruits, especially in some early-maturing varieties. The damaged green peels are black and rot and moldy, causing serious early fruit-dropping and drying of seed, affecting yield and quality. Anthrax generally peaks in July before onset until harvest. When the fruit is onset, the lesions are brown at the beginning, darker afterwards, rounder, and subsided centrally. There are many brown to black dots on the lesions, sometimes in a concentric ring pattern. When the humidity is high, the small black spots on the lesions are small pink protrusions, which are pathogenic bacteria conidia discs. One disease has one or more than a dozen lesions. The lesions are enlarged or contiguous, which can lead to black rot of the whole fruit. When the humidity is high, the small spots on the lesions show pink small protrusions, which are the spores and points of the pathogen. Spores.
Prevention and control of anthrax should be based on prevention, specific measures:
1. Spray 3 to 5 Baume degree lime sulfur before germination.
2. After fruiting, spray 600-800 times more carbendazim (or Fuxing et al.) plus 80% of Dasheng M45 (or new Wansheng and other protective fungicides).
3. Before and after the ripe wheat can be sprayed 1:4 ~ 5:200 Bordeaux mixture, (1 kg of copper sulfate, 4 ~ 5 kg of quicklime, 200 kg of water, the normal Bordeaux mixture ratio of 1:2:200, to prevent Before and after the harvest, the amount of quicklime should be increased. The fruit is susceptible to anthrax after sunburn.)
4. In July-August, every 10 to 15 days in rainy season, after spraying 600 to 800 times of carbendazim (or Fuxing et al.) plus 80% of Dasheng M45 (or new Wansheng etc.) Fungicide).
To prevent the occurrence of anthrax, in addition to strengthening the prevention and control of chemicals, special attention should be paid to improving the ventilation and light transmission conditions in the park. Generally, young trees are well ventilated and lightly affected. As the degree of confinement of orchards increases, anthrax also increases. It will tend to be serious.
Anthracnose is a major hazard to walnut fruits, especially in some early-maturing varieties. The damaged green peels are black and rot and moldy, causing serious early fruit-dropping and drying of seed, affecting yield and quality. Anthrax generally peaks in July before onset until harvest. When the fruit is onset, the lesions are brown at the beginning, darker afterwards, rounder, and subsided centrally. There are many brown to black dots on the lesions, sometimes in a concentric ring pattern. When the humidity is high, the small black spots on the lesions are small pink protrusions, which are pathogenic bacteria conidia discs. One disease has one or more than a dozen lesions. The lesions are enlarged or contiguous, which can lead to black rot of the whole fruit. When the humidity is high, the small spots on the lesions show pink small protrusions, which are the spores and points of the pathogen. Spores.
Prevention and control of anthrax should be based on prevention, specific measures:
1. Spray 3 to 5 Baume degree lime sulfur before germination.
2. After fruiting, spray 600-800 times more carbendazim (or Fuxing et al.) plus 80% of Dasheng M45 (or new Wansheng and other protective fungicides).
3. Before and after the ripe wheat can be sprayed 1:4 ~ 5:200 Bordeaux mixture, (1 kg of copper sulfate, 4 ~ 5 kg of quicklime, 200 kg of water, the normal Bordeaux mixture ratio of 1:2:200, to prevent Before and after the harvest, the amount of quicklime should be increased. The fruit is susceptible to anthrax after sunburn.)
4. In July-August, every 10 to 15 days in rainy season, after spraying 600 to 800 times of carbendazim (or Fuxing et al.) plus 80% of Dasheng M45 (or new Wansheng etc.) Fungicide).
To prevent the occurrence of anthrax, in addition to strengthening the prevention and control of chemicals, special attention should be paid to improving the ventilation and light transmission conditions in the park. Generally, young trees are well ventilated and lightly affected. As the degree of confinement of orchards increases, anthrax also increases. It will tend to be serious.
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