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What causes the drying and shrinking of the heart leaves of hot peppers?
The drying and shrinking of the heart leaves of hot peppers may be caused by a viral disease. After peppers are infected by a virus, a variety of symptoms can appear, generally including mosaic, fern leaf, vein clearing, dwarfing, yellowing, necrosis, and top withering. Among these, the one that can cause the drying and shrinking of the heart leaves of hot peppers is fern leaf virus disease. After this disease occurs, it can be controlled by the following methods: (1) 20% Virus A wettable powder at 500 times dilution; (2) Virucide or Virus Spirit at 500 times dilution; (3) 1.5% Zhibingling emulsion at 1000 times dilution; (4) Antiviral Agent No. 1 at 400 times dilution, sprayed once every 10 days
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Prevention and control methods for white spots on new leaves, dry leaves, curling and shrinking in Welsh onions
What to do when new leaves of Welsh onions have white spots, dry leaves, curling and shrinking? Many diseases and pests can cause dry yellow leaves in Welsh onions, including downy mildew, gray mold, Phytophthora blight, viral disease, seedcorn maggot, and others. Since spraying pesticides for downy mildew, gray mold, and Phytophthora blight had no effect, the Welsh onions are most likely affected by viral disease and damage from seedcorn maggot, which can be controlled according to...
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