Vegetable diseases often cause disease problems, so what are the common diseases of vegetable cultivation? The following Hui Nongwang Xiaobian compiled the identification methods and medication methods for the most common diseases of vegetables for the farmers. 1. Downy mildew Hazard characteristics The disease spreads from the bottom up Polygonal chlorotic spots appear on the front Purple gray mold layer on the back when wet Application method Mancozeb, dexamethasone, pyraclostrobin + dimethomorph, cymoxanil, cyanoxazole Root treatment at the beginning of the disease; pay attention to fight drugs after rain before rain; disease plants and diseased leaves are treated in time for destruction 2, blight Hazard characteristics Cotyledon yellowing Stem base yellow brown High humidity white mold Application method Azoxystrobin, prochloraz, carbendazim, difenoconazole In the early stage of the disease, the base of the stem is sprayed or rooted, and the diseased plant is directly removed and destroyed, and the soil is disinfected (Note: the concentration of difenoconazole and the nail is too high to cause phytotoxicity) 3, gray mold Hazard characteristics Expanding inward along the veins in a "V" shape, taupe There are deep and shallow striated lines, and the borders of the disease are clearly defined. Low temperature and high humidity type disease Application method Pyridylamine, pyrimethanil, allicin, procymidone, iprodione, prochloraz, pyrionitrile 4, bacterial wilt Hazard characteristics The entire upper part is withered It recovers on cloudy days and sooner or later, like a healthy plant Symptoms of bruising Application method Zhongshengmycin, thiabium copper, thiazole zinc, chlorobromoisocyanuric acid In the early stage of the disease, the roots are treated, the diseased plants are directly removed and destroyed, and the soil is disinfected. 5, anthracnose Hazard characteristics Round, oval reddish-brown spots on the leaves Sometimes there is a yellow halo on the edge, and finally the lesion turns dark brown and produces a black dot with a wheel-like arrangement. In the late stage, the lesions are perforated, and the lesions are fused into pieces to cause the leaves to dry up. Application method Azoxystrobin, indoline + difenoconazole, prochloraz Use drugs at the beginning of the disease; pay attention to fight drugs after rain 6, powdery mildew Hazard characteristics Beginning to produce yellow dots on the leaves and then expanding into round or oval lesions White powdery mildew In general, the lower blade is more than the upper blade, and the back of the blade is more than the front. Application method Azoxystrobin, ether fungus, chlorothalonil, trifloxystrobin, fluopyram + acesulfame, difenoconazole, myclobutanil Use drugs at the beginning of the disease; pay attention to fight drugs after rain 7, the disease Early blight Dark brown lesions on the base of the stem, slightly trapped, with rounded lines When the high-moisture black mold layer seedlings have dark brown lesions at the base of the stem, they are slightly trapped and have a ring pattern. Adult disease usually develops from the lower leaves to the upper part The disease department has (concentric) Application method Desenzen zinc, mancozeb, pyraclostrobin + dimethomorph, cyanoxazole, cymoxanil Root treatment at the beginning of the disease; pay attention to fight drugs after rain before rain; disease plants and diseased leaves are treated in time for destruction 8, root knot nematode disease Hazard characteristics Root knot Blade noon wilting Plant dwarf Application method Avermectin, thiazolyl, butyl thiocarbacarb Awei root treatment; the rest of the soil treatment 9, viral disease Hazard characteristics Leaves shrink, uneven Leaf chlorotic macula Discoloration along the vein Application method Morpholinium hydrochloride, oligosaccharide, chain protein, amino oligosaccharide In the early stage of the disease; mainly prevention 10, soft rot and black rot Sunny weather, normal morning and evening Wet rot, smelly Last root and leaf rot Application method Copper hydroxide, copper thiabium, zinc thiazole, neutrophin; or thiazole zinc + copper rosinate Spray and ground at the beginning of the disease 11, rust Hazard characteristics Rust usually only causes local infection The affected part may produce blister spots or blister, cups, hairs of different colors due to the accumulation of spores. Cause symptoms such as tumors, rough skin, arbuscular branches, and curved branches on the branches Application method Bromobacillus, trifloxystrobin, azoxystrobin, triadimefon In the early stage of the disease; take care of the drugs after the rain; the diseased plants, diseased leaves, and diseases are destroyed in time. 12, bacterial angular spot disease Hazard characteristics Leaf back water stain There is a pus after watering The veins are bounded, gradually enlarged, with irregular polygons, reddish brown, surrounded by yellow halos, and black moldy spots in the later stage. Application method Copper hydroxide, copper rosinate, copper thiabium, zinc thiazole, neutrophin In the early stage of the disease, take medication after the rain; the diseased plants, diseased leaves, and diseased fruits should be disposed of in time (Note: It is recommended to use copper hydroxide alone!) 13, sclerotinia Hazard characteristics Water stain rot White hyphae finally become black sclerotia Not wilting, withering Application method Prochloraz, procymidone, iprodione, tebuconazole, boscalid In the early stage of the disease, the roots are treated, the diseased plants are directly removed and destroyed, and the soil is disinfected. 14, blight and stumble Blight Wilting during the day, recovery at night Gray-brown lesion Dry and dead, do not fall down Tripping disease Seedling stage Dry and linear Seedlings falling down Application method Moxacillin, mancozeb, thiophanate-methyl; or procymidone + chlorothalonil, pyraclostrobin + mancozeb In the early stage of the disease, the roots are treated, the diseased plants are directly removed and destroyed, and the soil is disinfected. 15, root rot Application method Moxacillin, adiacetyl bacterium, fluazinam In the early stage of the disease, the roots are treated, the diseased plants are directly removed and destroyed, and the soil is disinfected. The above is the identification of common diseases of vegetables and the methods of medicine used by the farmers in the small farms of Huinong. The vegetable farmers in need must take a good look at the study. More vegetable planting techniques are brought to you by Huinong.com!
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What are the common diseases of vegetables? Identification of common diseases of vegetables and methods of administration thereof