-
What are the common types of pests and diseases affecting cherry blossom trees?
What pests and diseases affect cherry blossoms? How should they be prevented and controlled? There are many types of pests and diseases affecting cherry blossoms. The common ones are described below: 1. Shot-hole brown spot disease occurs in May and June, with small purplish-brown spots appearing on the leaves, which then gradually expand into circular shapes; after the diseased spots dry and shrink, they become small holes. The pathogen mostly overwinters on diseased branches...
-
What types of pests and diseases affect jasmine?
What pests and diseases affect jasmine? Here is an introduction. Jasmine has the following pests and diseases: 1. Diseases ① Brown spot disease: promptly prune off diseased leaves and diseased branches, and spray the leaf surface with 80% zineb wettable powder at 500-700 times dilution, or 80% mancozeb wettable powder at 400-600 times dilution, spraying once every 10-15 days for 3-5 consecutive sprays....
-
What are the common types of pests on magnolia?
What pests affect magnolia? How should these pests be controlled? An introduction is given below. Magnolia pests include: 1. Cicada. The nymphs of the cicada suck the sap from the roots of the plant in the soil, the adults pierce and suck the sap from the main leaves, and the female inserts its ovipositor into the branches to lay eggs, causing the branches to wither and die. Control methods: (1) Kill the mature nymphs that have just emerged from the soil in a timely manner...
条件筛选