Tomato leaf mold is an important disease of tomatoes in protected fields. It mainly damages the leaves, stems, flowers and fruits of tomatoes. At the initial stage, some green spots appear on the back of the leaves, and later it turns into gray or black and purple irregular moldy layers. Facing the corresponding part of the surface fades green to yellow, and when severe, the leaves often appear dry and shrinking.
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The Configurations as below:
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Prevention
1. Phosphate and Potassium Fertilizer should be applied before sowing, and seed selection and seed treatment should be done. Seeds can be seeded with new high fat film to repel underground pests and isolate virus infection without affecting the function of germination and ingestion, and strengthen the respiratory intensity. Seed germination rate, spraying 800 times the new high-fat film timely sowing heat preservation, to prevent soil knots, improve the emergence rate.
2. Strengthen management, timely cultivating and weeding during tomato growth, top-dressing with water, and promptly reducing the humidity in the field; spraying Huanwang No. 3 to suppress the growth of main shoots, promote flower bud differentiation, increase plant disease resistance, and spray before flowering Planting Fruit Zhuang Ti Ling improves the pollen quality, enhances the cycle fruit setting rate, improves the quality of the tomato, and allows the tomato to produce stable quality.
3, chemical control, the early stage of disease can be sprayed according to the requirements of plant protection 50% carbendazim 500 times, 70% thiophanate-methyl 500 times and other targeted drugs, 7 days, continuous control of 2 or 3 times, at the same time Spray 800 times the new high-fat film to enhance efficacy, improve the utilization of effective pharmaceutical ingredients, and consolidate the control effect. 