Which diseases and insect pests need to be controlled in planting Eucommia ulmoides?

Which diseases and insect pests need to be controlled in planting Eucommia ulmoides? Please introduce the main diseases and insect pests of Eucommia ulmoides are blight, root rot, leaf blight, leopard silkworm moth and so on. In the prevention and control of blight, ferrous sulfate powder 105 ~ 150kg/hm2 or 40% formaldehyde solution 45kg / hm2 was sprayed during soil preparation, and then covered with grass to disinfect the soil; when sowing, 50% carbendazim 37.5kg/hm2 was mixed with fine soil and sprinkled on the seedbed or in the sowing ditch; 50% carbendazim 1000 times solution was used to irrigate the initial stage of the disease. In the cultivated land with high groundwater level or poor drainage, Eucommia ulmoides is prone to root rot and the whole plant dies, so it is necessary to strengthen drainage, dig out diseased trees and burn them and disinfect the tree holes with 50% formalin. Leaf blight harms the leaves and dies when the leaves are serious. The nursery should be cleaned and 1 ∶ 1 ∶ Bordeaux solution should be sprayed during the growing period. In the prevention and control of leopard silkworm moth, the countryside is cleaned in winter; in early June, the tree trunk is painted with whitening agent before the adults lay eggs, and 40% dimethoate emulsion is sprayed on the tree trunk during the larval incubation period. Click to get more planting techniques of Eucommia ulmoides