Fusui gray mold is a common disease in greenhouse cultivation.
Symptoms Botrytis cinerea infects the flowers, resulting in water-stained brown lesions. When the humidity is high, the diseased parts produce light gray black moldy matter, ie, pathogenic conidiophores and conidia.
The pathogen Botrytis cinerea Pers. called Botrytis cinerea, a fungus belonging to the genus Deuteromycotina.
The characteristics of the disease? Mycelia, conidia or sclerotia with the disease overwintering, by air, fertilization, watering and other spread. Low temperature and high humidity are important conditions for the onset of disease. Early spring sheds, low temperature in the room, long time for plant condensation, and high humidity continue to contribute to hair growth?
Control methods
1. Management of disease prevention? Appropriate control of watering after onset, reduce shed, indoor humidity, timely and careful removal of diseased flowers, diseased leaves and debilitating tissue, early spring attention to warming and warmth.
2. Chemical control? 50% carbendazim WP, 50% fast gram WP, 50% sclerotinin WP, 50% acetaminophen WP, 30% gentamicin WP, 50% mitoxin WP, can be used. 40% Dakkoning WP, etc., the liquid concentration is 1000 times. 20% of Shijiale (mildew, Pyrimethanil) SC, 10% of World High WG, and 25% of Ash WP can also be selected for the control of Botrytis cinerea. Greenhouse control of gray mold In addition to proper ventilation and humidity control in greenhouses, the best use of fumigation agent in greenhouses can also be used, but also can use 45% chlorothalonil smoke, 20% slow moxa smoke, 10% Sickoline's fumigant is 250~300g per mu and 8~10 points in the shed; different drug types should be selected and used alternately to ensure the control effect and delay the occurrence of disease resistance.
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