In the autumn, various vegetables grow vigorously. In this season, the vegetables in the open field and the greenhouse vegetables coexist, so the occurrence of pests and diseases is diversified. According to the investigation and monitoring, there are many types of vegetable pests and diseases, and some of them are in urgent need of prevention and treatment.
Four generations of cotton bollworm According to the monitoring, the four generations of cotton bollworms were severe in some parts of the province. The four generations of cotton bollworms entered the spawning period after August 25, and the larvae occurred in the first half of September. The rate of tomato worms in Xianghe County is 100%, and that in eggplants is 12 in larvae. The first half of September is the key period of prevention and control.
Control prescription: 5% inhibition of Taibao 1800 times liquid + 24% Wanling water 1000 times solution or Bt200 times solution. Ask to get through the upper and lower sides, morning and evening medication.
Cruciferous pests Cruciferous vegetables are mainly cabbages and radishes. Autumn is mainly the peak of the night moth pests.
1. Beet armyworm: At present, the number of beet armyworms is high in some places. In Zhulu County, there are 7 to 20 larvae of Chinese cabbage on August 4, and 200 to 500 heads of Yongnian County. In addition, green onions, beans, peppers and other vegetables also occur in sugar beets. Nocturnal moth.
2. Cabbage worm: 10 heads of cabbage in Langfang City, 12 heads on cauliflower.
3. Plutella xylostella: At present, the northern part of the country is heavier, with 110 to 360 heads of Wanquan vegetables and 13 heads of Baibai in Langfang.
Control prescription: 10% imidacloprid 1000 times solution + 5% taibao 1500 times solution, or 5% acetamiprid emulsifiable concentrate 2000 times solution spray, and prevent rapeseed meal, leaf mites, whitefly.
Cruciferous disease The weather has been humid since the beginning of autumn, which is conducive to disease. Cruciferous vegetables should pay attention to the virus disease at the seedling stage, soft rot in the rosette period, black rot and downy mildew in the heart.
1. Cabbage downy mildew: Cabbage downy mildew has begun to occur, and the occurrence period is obviously early. The incidence of downy mildew on August 30 in Xingtai City is 10.5%, and the incidence rate in Langfang is 9.8%.
2. Other diseases of cabbage: Langfang City investigated the soft rot of cabbage on August 23; the rate of cabbage virus disease in Wanquan County was 10%-20%; the rate of black spot disease in Wanquan County was 80%.
3. Other cruciferous vegetable diseases: Cabbage black spot disease, cauliflower black spot disease, black rot, downy mildew disease occurred in the Yongnian survey. The occurrence is higher than the calendar year.
Control prescription: downy mildew is sprayed with 75% anti-gel WP 450 times or 80% mancozeb WP 600 times solution; black spot is treated with 10% high water dispersant 1500 times or 70% Methyl thiophanate WP 600 times liquid spray; soft rot, black rot with 90% neomycinic WP 2500 times solution or 72% agricultural streptomycin WP 2500 times solution spray.
Cucumber disease mainly caused by bacterial bacterial leaf spot, powdery mildew and downy mildew. In the end of August, Yongnian County investigated the ill-fill rate of powdery mildew by 30%, the morbidity rate of pink powder disease by 50%, the morbidity rate of bacterial leaf spot disease by 100%, and the morbidity rate of downy mildew by 95%.
Control prescription: powdery mildew, powdery mildew with 10% Shigao water dispersant 1500 times liquid or 70% methyl thiophanate WP 600 times liquid spray. Downy mildew control is the same as above. The prevention and treatment of angular spot disease is the same as cabbage soft rot and black rot.
Eggplant disease At present, the disease of eggplant mainly occurs on the solanaceous fruit, which is plague, anthracnose and brown streak. Bazhou investigated the fruit rate of brown smut disease by 20%; è— city was destroyed due to some diseases of this disease; Xianghe County investigated the rate of anthracnose morbidity field by 100%, and the diseased plant rate was 46%.
Control prescription: eggplant plague with 75% anti-gel WP 450 times solution, or 80% mancozeb WP 600 times solution spray; brown plaque with 75% chlorothalonil WP 600 times solution, Or 58% Jinlei 600 times liquid spray; anthrax 80% anthrax carbamide wettable powder 800 times liquid, or 75% chlorothalonil wettable powder 800 times liquid plus 70% methyl thiophanate WP 800 times liquid spray.
Celery disease The celery mainly produces leaf spot disease. The rate of leaf spot disease in Yongnian County is 60%, the diseased plant rate is 80%, and the diseased leaf rate is 12.5%. The severity has affected the quality of celery.
Control prescription: use 10% Shigao water dispersant 1500 times solution, or 70% methyl thiophanate WP 600 times solution, or 50% carbendazim WP 400 times solution.
Scallion disease mainly occurs on purple onion and downy mildew. In the investigation of Xianghe County, purple spot disease generally occurred; Yongnian County investigated the rate of diseased field of onion and downy mildew 100%, the rate of diseased plants was 80%, and the rate of diseased leaves was 32%.
Control prescription: Scallion downy mildew and cucumber downy mildew; purple spot disease prevention and treatment with 64% anti-virus 矾 wettable powder 500 times liquid or 58% metalaxyl manganese zinc wettable powder 500 times liquid spray.
Other pests Other pests that occur in autumn vegetables are mainly whitefly, Liriomyza sativae, and rapeseed.
Whitefly occurs on a variety of vegetables, with a strain rate of 70% to 100%, and a high single leaf with 150 adult (Little White Moth). Liriomyza sativa mainly harms melons and beans, and it is also heavy on eggplant and tomato.
Prescription for prevention and treatment: whitefly can be sprayed with 0.5% matrine water 500 times solution or 3% acetamiprid emulsifiable concentrate 3000 times solution; Liriomyza sativae can use 1.8% worm emulsifiable concentrate 2000-3000 times liquid or 2.5% kungfu emulsifiable concentrate or 48% lesbian oil 800 ~ 1000 times liquid spray for prevention.
The prevention and treatment of various diseases should be separated by 7 to 10 days, and used continuously for 2 to 3 times. The spray should be even, and the front and back of the leaves should be sprayed. The key parts of the different pests and diseases should be applied according to the characteristics of pests and diseases.
Four generations of cotton bollworm According to the monitoring, the four generations of cotton bollworms were severe in some parts of the province. The four generations of cotton bollworms entered the spawning period after August 25, and the larvae occurred in the first half of September. The rate of tomato worms in Xianghe County is 100%, and that in eggplants is 12 in larvae. The first half of September is the key period of prevention and control.
Control prescription: 5% inhibition of Taibao 1800 times liquid + 24% Wanling water 1000 times solution or Bt200 times solution. Ask to get through the upper and lower sides, morning and evening medication.
Cruciferous pests Cruciferous vegetables are mainly cabbages and radishes. Autumn is mainly the peak of the night moth pests.
1. Beet armyworm: At present, the number of beet armyworms is high in some places. In Zhulu County, there are 7 to 20 larvae of Chinese cabbage on August 4, and 200 to 500 heads of Yongnian County. In addition, green onions, beans, peppers and other vegetables also occur in sugar beets. Nocturnal moth.
2. Cabbage worm: 10 heads of cabbage in Langfang City, 12 heads on cauliflower.
3. Plutella xylostella: At present, the northern part of the country is heavier, with 110 to 360 heads of Wanquan vegetables and 13 heads of Baibai in Langfang.
Control prescription: 10% imidacloprid 1000 times solution + 5% taibao 1500 times solution, or 5% acetamiprid emulsifiable concentrate 2000 times solution spray, and prevent rapeseed meal, leaf mites, whitefly.
Cruciferous disease The weather has been humid since the beginning of autumn, which is conducive to disease. Cruciferous vegetables should pay attention to the virus disease at the seedling stage, soft rot in the rosette period, black rot and downy mildew in the heart.
1. Cabbage downy mildew: Cabbage downy mildew has begun to occur, and the occurrence period is obviously early. The incidence of downy mildew on August 30 in Xingtai City is 10.5%, and the incidence rate in Langfang is 9.8%.
2. Other diseases of cabbage: Langfang City investigated the soft rot of cabbage on August 23; the rate of cabbage virus disease in Wanquan County was 10%-20%; the rate of black spot disease in Wanquan County was 80%.
3. Other cruciferous vegetable diseases: Cabbage black spot disease, cauliflower black spot disease, black rot, downy mildew disease occurred in the Yongnian survey. The occurrence is higher than the calendar year.
Control prescription: downy mildew is sprayed with 75% anti-gel WP 450 times or 80% mancozeb WP 600 times solution; black spot is treated with 10% high water dispersant 1500 times or 70% Methyl thiophanate WP 600 times liquid spray; soft rot, black rot with 90% neomycinic WP 2500 times solution or 72% agricultural streptomycin WP 2500 times solution spray.
Cucumber disease mainly caused by bacterial bacterial leaf spot, powdery mildew and downy mildew. In the end of August, Yongnian County investigated the ill-fill rate of powdery mildew by 30%, the morbidity rate of pink powder disease by 50%, the morbidity rate of bacterial leaf spot disease by 100%, and the morbidity rate of downy mildew by 95%.
Control prescription: powdery mildew, powdery mildew with 10% Shigao water dispersant 1500 times liquid or 70% methyl thiophanate WP 600 times liquid spray. Downy mildew control is the same as above. The prevention and treatment of angular spot disease is the same as cabbage soft rot and black rot.
Eggplant disease At present, the disease of eggplant mainly occurs on the solanaceous fruit, which is plague, anthracnose and brown streak. Bazhou investigated the fruit rate of brown smut disease by 20%; è— city was destroyed due to some diseases of this disease; Xianghe County investigated the rate of anthracnose morbidity field by 100%, and the diseased plant rate was 46%.
Control prescription: eggplant plague with 75% anti-gel WP 450 times solution, or 80% mancozeb WP 600 times solution spray; brown plaque with 75% chlorothalonil WP 600 times solution, Or 58% Jinlei 600 times liquid spray; anthrax 80% anthrax carbamide wettable powder 800 times liquid, or 75% chlorothalonil wettable powder 800 times liquid plus 70% methyl thiophanate WP 800 times liquid spray.
Celery disease The celery mainly produces leaf spot disease. The rate of leaf spot disease in Yongnian County is 60%, the diseased plant rate is 80%, and the diseased leaf rate is 12.5%. The severity has affected the quality of celery.
Control prescription: use 10% Shigao water dispersant 1500 times solution, or 70% methyl thiophanate WP 600 times solution, or 50% carbendazim WP 400 times solution.
Scallion disease mainly occurs on purple onion and downy mildew. In the investigation of Xianghe County, purple spot disease generally occurred; Yongnian County investigated the rate of diseased field of onion and downy mildew 100%, the rate of diseased plants was 80%, and the rate of diseased leaves was 32%.
Control prescription: Scallion downy mildew and cucumber downy mildew; purple spot disease prevention and treatment with 64% anti-virus 矾 wettable powder 500 times liquid or 58% metalaxyl manganese zinc wettable powder 500 times liquid spray.
Other pests Other pests that occur in autumn vegetables are mainly whitefly, Liriomyza sativae, and rapeseed.
Whitefly occurs on a variety of vegetables, with a strain rate of 70% to 100%, and a high single leaf with 150 adult (Little White Moth). Liriomyza sativa mainly harms melons and beans, and it is also heavy on eggplant and tomato.
Prescription for prevention and treatment: whitefly can be sprayed with 0.5% matrine water 500 times solution or 3% acetamiprid emulsifiable concentrate 3000 times solution; Liriomyza sativae can use 1.8% worm emulsifiable concentrate 2000-3000 times liquid or 2.5% kungfu emulsifiable concentrate or 48% lesbian oil 800 ~ 1000 times liquid spray for prevention.
The prevention and treatment of various diseases should be separated by 7 to 10 days, and used continuously for 2 to 3 times. The spray should be even, and the front and back of the leaves should be sprayed. The key parts of the different pests and diseases should be applied according to the characteristics of pests and diseases.
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