Coriander planting: what is the early blight of coriander?
What is the early blight of parsley? What are the hazards of parsley early blight? Please introduce and control the harm of parsley early blight: parsley early blight is a fungal disease, which can occur at seedling stage and adult stage, and the stem base of seedlings has dark brown spots, slightly sunken and has wheel pattern. In the adult stage, the disease generally develops from the lower leaves to the upper leaves. At the initial stage of parsley early blight, the leaves showed water-stained dark green disease spots, enlarged into round or irregular ring spots, and the edges had light green or yellow halo rings. There are concentric wheel lines in the middle, and there is a black mildew layer when the disease is wet. The main symptom is that the disease has (concentric) wheel lines. The optimum temperature for the growth of parsley early blight pathogen was 26 ~ 28 ℃, and the disease was serious under high temperature and humidity. Prevention and treatment of early blight of coriander: when the disease is expected to occur, spray Olik-Shuangbel 500x solution or use 30ml of Shuangbeir + Jinbei 40ml with 15kg water, once every 7ml for 10 days. Treatment: 1. In the early stage of the disease, diseased leaves, fruits and seriously diseased branches were removed in time, and then according to the situation of crop diseases in this period, Shuangbeir 50ml + Jinbei 40ml or Shuangbeir 50ml + mildew 30ml or Shuangbeir 50ml + Rhizoctonia solanacearum 30ml, mixed with water 15kg, 5rel was used once in 7 days for 2-3 times. 2. When the disease is serious, the central diseased plants and diseased leaves should be removed, and the prevention and treatment methods of integrated traditional Chinese and western medicine should be adopted in time, such as: Shuangbeir 50ml + cyanofrozole 25g or aldicarb hydrochloride 20g once a day for 3 times, then it can be treated effectively. Click to get more coriander planting techniques click to get more vegetable planting techniques
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Coriander planting: what is parsley powdery mildew?
What is parsley powdery mildew? What harm does parsley powdery mildew have? Also ask experienced netizens to guide the prevention and control of coriander powdery mildew, the harm and control methods of parsley powdery mildew are sorted out below for netizens' reference. The harm of parsley powdery mildew: the aboveground parts of coriander plants can be infected, but mainly damage leaves.
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Cilantro planting: what is the parsley mosaic virus?
What is parsley mosaic virus? Please introduce and control the harm of parsley mosaic virus: yellow mosaic or mosaic occurs during plant growth, and the general heart leaf occurs mostly as light mosaic, sometimes the heart leaf shrinks, rolls backward, and the plant is seriously dwarfed. Parsley mosaic virus.
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