Detailed Explanation of the Latest Control Methods for Eggplant Leaf Mold
Eggplant leaf mold is one of the common diseases of eggplant, mainly damaging the leaves and fruits of eggplant. The pathogen is the deuteromycete fungus Mycovellosiella, which spreads through wind and rain for secondary infection. Planting too densely, closed growth between plants, high field humidity, or damage by whiteflies can easily induce this disease. Let us take a look at the control methods for eggplant leaf mold!
Damage Symptoms
Eggplant leaf mold mainly damages leaves, petioles and stems. When leaves are infected, white mold spots first appear on the back of the leaves, then the mold spots gradually expand, with the color initially brown, later turning brown-black. The lesions are nearly round to irregular in shape, with greatly varying sizes, and the front of the leaves is slightly chlorotic. When the disease is severe, mold layers also appear on the front of the leaves, producing chlorotic pale yellow spots or patches, and later the lesions merge and the leaves wither and die.
Conditions for Onset
The pathogen mainly overwinters on the ground as mycelium and conidia with diseased residues. When climatic conditions are suitable the following year, conidia are produced on the diseased tissue and spread through wind and rain. After germination on the host surface, the conidia invade through wounds or directly, and the diseased parts produce conidia again, which spread through wind and rain for secondary infection. Planting too densely, closed growth between plants, high field humidity, or damage by whiteflies can easily induce this disease.
Control Methods
1. Agricultural measures: After harvest, promptly remove diseased residues and bury them deeply or burn them in a centralized manner. Planting density should be appropriate, drain promptly after rain, and reduce field humidity. After harvest, promptly remove diseased residues and bury them deeply or burn them in a centralized manner. Planting density should be appropriate, drain promptly after rain, and pay attention to reducing field humidity.
2. Chemical control: At the early stage of the disease, begin spraying 50% thiophanate-methyl · sulfur suspension concentrate at 800 times dilution, or 10% Shigao (difenoconazole) at 2000 times dilution, or 47% Kasumin wettable powder at 800-1000 times dilution, or 40% Xinxing (Fuxing) emulsifiable concentrate at 8000 times dilution, or 60% Fangmeibao No. 2 water-soluble powder at 1000 times dilution, spraying once every 7 days for 2-3 consecutive sprays.