A vegetable farmer in Linyi City asked: The lettuce in the shed has rotten leaves and white cotton-like hyphae. What kind of disease is this disease? How to prevent it? According to what the vegetable farmer said, it was judged to be lettuce sclerotia. The typical symptom of the disease manifested in lettuce was brown spots on the stems and leaves. Under high humidity conditions, the disease developed as the disease progressed. A large amount of white cotton flocculent mycelium grows on the surface, and when it is severe, the roots of the rotten and rotten stem plants die, and black sclerotia are produced later. The optimum temperature for the occurrence of Sclerotinia sclerotiorum is about 20 degrees Celsius, and the relative humidity of the air is more than 85%. Control methods: 1, remove the diseased shed, to prevent the re-infection of pathogens. 2. Strengthen humidity and reduce air humidity. 3, chemical control. Commonly used agents are quick-acting, sclerotia net, multi-mildew, and more. Sulphur suspension agent; In order to prevent the increase of air humidity, it is best to use dust or aerosols, such as 100 rot, fast Keling smoke agent.
Royal Jelly is also called Bee Milk. The fresh royal jelly is slightly ropy milk paste substance; it is the excretive mixture of nutrition gland and maxilla gland of the head of little worker bee. The worker bees use this to feed the 1-3 days` worker bee larva and drone larva, 1-5.5 days` queen bee larva and queen bee in the oviposition period. The royal jelly is the biologic product containing very complicated active elements which contains almost all the nutrition elements required by the growth of the human body.
Royal Jelly
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