Control of Diseases and pests of Eucommia ulmoides

Disease

The main results are as follows: (1) Rhizoctonia solani mostly occurs in the seedbed with low temperature and high humidity, heavy soil viscosity, too dense seedlings and too late uncovering grass. Prevention and control methods: sprinkle 710 kg of ferrous sulfate powder per mu or spray 3 kg of 40% formaldehyde solution per mu, and then cover the grass to disinfect the soil; when sowing, use 50% carbendazim 2.5 kg per mu mixed with fine soil and sprinkled on the seedbed or sowing ditch; during the onset of the disease, irrigate with 50% carbendazim 1000 times solution.

(2) Root rot is easy to occur when it is rainy from June to August. The plot with high terrain, good drainage and loose soil should be selected as the nursery. Prevention and treatment: at the initial stage of the disease, 50% topiramate was irrigated with 1000 times liquid.

(3) the leaf blight is harmful to the leaves, and the leaves die when it is serious. Prevention and cure method: clean the countryside; spray 1-1-1-100 Bordeaux liquid during the growing period.

Insect pest

The larvae of the leopard silkworm moth damage the branches, resulting in the decline of the tree. Control methods: clean the countryside in winter; in early June, brush the tree trunk with whitening agent before the adults lay eggs; spray 40% dimethoate emulsion 400-800 times on the tree trunk during the larval incubation period.

In addition, there are also pests such as aphids and coir moths.