Recently, the author investigated the occurrence and prevalence of major pests and diseases in vegetable bases and vegetables in previous years. The main diseases of vegetables in April included: lettuce downy mildew, gray mold, sclerotinia, celery spot blight, gray mold, green onion mold , Chives and so on. At present, most of the early spring vegetables have basically been transplanted, and prevention and control measures should be taken in time.
Lettuce downy mildew: Both the open field and the greenhouse are serious. In the early stage of disease, 80% triethylphosphonate wettable powder 500-600 times liquid or 70% EDPH WP can be used, 58% metalaxyl WP wettable powder 400-500 times, 72.2% Propyrathermic Aqueous Solution 600-800 Times, 78% Wave Manganese Zinc Wettable Powder 500-600 Times, 72% Cream Urea Manganese Zinc Wettable Powder 800 Times, 69% Adenyl Manganese Zinc Wettable Powder 1000 Times And other agents, choose sunny alternate spray, spray 7 days, even spray 4-5 times.
Lettuce gray mold: occurs mainly in the greenhouse. At the beginning of the disease, 50% of Bifidobacterium WP can be used or 65% of Thiozyme can be used as WP 800 times, 70% of thiophanate-methyl WP can be used as 600-800 times, and 50% of bacteriocin can be used. Wet powder 1000-1500 times, 40% pyrimethanil suspension 800-1200 times, 50% carbendazim wettable powder 800-1000 times, 50% isoprenil wettable powder 1500 times spray control, Once every 7 days, even spray 3-4 times, it is necessary to prevent and treat as soon as possible, and pay attention to alternate use of pharmaceuticals, or use Wuyimycin and other biological pesticides and chemical pesticides mixed.
Sclerotinia sclerotiorum disease: Severe crop area. In the early stage of disease, 50% procymidone wettable powder 1000-1200 times liquid, 40% sclerotium net wettable powder 1000-1200 times liquid, 50% isobacturon wettable powder 1000-1200 times liquid, 25% Carbendazim WP 500 times, 70% thiophanate-methyl WP 700 times and other spray, spraying the base of the stem and the base of the leaf, spraying once every 7 days, even spray 3-4 times.
The celery spot blotch: At the beginning of the disease, 50% methicone WP can be used 500-600 times, or 58% metalaxyl WP 1000 times, 68% Calcium Manganese Zn hydrate dispersible granule 600 -800 times liquid, 72.2% Propomethrin 1000 times liquid, 10% Cyazolazide suspension 2000-3000 times liquid, 65.5% Famoxadone water dispersible granule 800-1200 times, 52.5% oxazole Ketone cymoxanil water dispersible granules 2000-3000 times liquid, 64% caoffacte wettable powder 400-500 times liquid, 40% fluorosiliconazole emulsion 8000 times liquid, 70% proprin zinc wettable powder 500-700 times Liquid, 70% sulfoxide sodium wettable powder 1000 times liquid spray.
The celery gray mold: open fields and greenhouses occur, taking place inside the greenhouse. Control methods see lettuce gray mold.
Weeping Botrytis cinerea: At the beginning of onset, we can use 3% multi-antimycin agent 600-900 times solution, 0.5% aminooligosaccharide agent 300 times solution, 50% carbendazim WP 800 times solution, 25 % Prochloraz 2000 times, 50% Doxor WP 1000 times, 36% Thiophanate Suspension 500 times, 25% Metalaxyl WP 1000 times, 40% Propyrifos Amine suspension agent 1200 times, 50% procymidone wettable powder 1500 times, 50% iprodione WP wet 1000-1500 times, 50% ethylene nucleus Lee wettable powder 1000-1500 times spray control , 7 days once, even against 2-3 times.
Leek mold: See green onion gray mold.
Chili blight: It is popular when it is rainy. Should be prevented as early as possible, use 50% methicone wettable powder 500-600 times, or 60% saponin aluminum phosphorus wettable powder 500 times, 77% copper hydroxide wettable powder 500 times, 75% chlorothalonil Clear wettable powder 800 times liquid, 68% fine amaline manganese zinc water dispersible granules 500-600 times liquid, 68.75% flumethrin water 800 times, 25% azoxystrobin suspension 1000-1500 times, 72% cream urea manganese zinc wettable powder 800 times liquid, 50% dimethomorph WP wettable powder 2500-3000 times liquid, 72.2% spray Fermenter 800 times liquid spray.
Eggplant Blight Disease: It is prone to occur after fruit set. In the early stage of disease, 70% BDP MnZn WP can be used 500 times, or 58% MF WP can be 600 times, 77% can be wettable 500 times liquid powder, 64% zeafa WP 800 times, 72% urea Mn Zn wettable powder 500 times, 72.2% Proplohydrate 600 times liquid, 69% dimethyl morpholine morpholine Wet powder 800 times liquid, 62.5% fluorine fungicide propofol Wei suspension 800 times, 55% forenoyl wettable powder 700 times, 50% azoxystrobin water dispersible granule 2000 times spray control.
Tomato early blight: It begins to happen after transplanting in early spring, and 50% iprodione WP can be used for 1000-1500 times or 75% chlorothalonil wettable powder 600 times, and 47% spring thunder-copper WP 800 - 1000 times, 80% mancozeb WP, 600 times, 58% methasone WP, 500 times, 70% SENSO 500-600 times, 50% milwaukee Wettable powder 600-800 times, 77% copper hydroxide wettable powder 500-750 times liquid spray, each agent in the whole reproductive period of the tomato with a total of 2-3 times, pay attention to the use of drugs rotation .
For the most common waxy and sweet corn on the market, waxy corn has a higher nutrient content than regular corn, containing 70-75% starch (and almost all straight-chain starch), more than 10% protein, 4-5% fat and 2% multivitamins, with more grains, VA, VB1 and VB2 in protein than rice, with the highest fat and VB2 content. Yellow maize also contains carotenoids, such as rice and wheat. The molecular weight of waxy maize starch is more than 10 times smaller than that of ordinary maize, and the starch makes glutinous rice sticky and soft, softer than ordinary hard maize. It is more than 20% more digestible to eat than regular maize and it is suitable for people with less than perfect teeth. At the same time, it is not suitable for diabetics because of the very high content of straight-chain starch (a polysaccharide).
Waxy maize is also known as sticky maize. The grain has coarse, waxy endosperm, similar to shiny, glassy (clear) grains such as hard and dent maize. Its chemical and physical characteristics are controlled by a recessive gene, which is located on chromosome 9. 100% of the starch in the endosperm is straight-chain starch.
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