The Latest Control Methods for Common Pests and Diseases of Eucommia ulmoides

Eucommia ulmoides is a medicinal herb thought to have extremely high medicinal value, and it holds a very important position in both ancient and modern medicine. Due to the increase in market demand for Eucommia ulmoides, more and more people are growing it. However, this medicinal herb has a relatively high rate of disease and pest infestation, so what diseases harm the growth of Eucommia ulmoides? And what pests? Do you know how to control these pests and diseases? Let's learn about them together below.

1. Root rot

The peak period of root rot is between June and August, with the greatest harm occurring during the seedling stage, though it also has a major impact on mature Eucommia ulmoides. Root rot mainly damages the roots of Eucommia ulmoides, starting with the lateral roots, then spreading to the main root as the disease worsens, and finally causing the entire root system to rot, so the whole plant loses its vitality and gradually withers away. To prevent root rot, the first step is to choose a good planting site, then carry out proper water and fertilizer management with timely drainage and irrigation. In the early stages of root rot, we can use thiophanate, Tuzet, and carbendazim for control, and we should dig out and burn the affected plants, and disinfect and sterilize the soil.

2. Damping-off

Damping-off, also called seedling blight, has the greatest impact on Eucommia ulmoides seedlings, especially seedlings propagated from seed; grafted seedlings rarely develop damping-off. Damping-off mainly occurs during hot and rainy periods, which easily causes pathogen infection, then the cotyledons of the Eucommia ulmoides seedlings rot and develop rot-like spots, and finally the roots become infected, causing root rot, so the Eucommia ulmoides wilts and lodges. The control methods for damping-off are the same as those for root rot; although they are not the same disease, both use fungicidal agents such as carbendazim.

3. Angular leaf spot

Angular leaf spot mainly damages the leaves of Eucommia ulmoides, and whether at the seedling stage or the mature stage, the incidence of this disease is very high. When angular leaf spot occurs, brown polygonal spots appear on the leaves, then black-gray mold-like material appears where the spots are, and as the disease worsens, the leaves turn completely black and then fall off. When angular leaf spot occurs, we usually use Bordeaux mixture for control, but the most important thing is still to strengthen cultivation management and improve the resistance of Eucommia ulmoides itself.

4. Scarab beetles

Among the pests that cause relatively great harm to Eucommia ulmoides, scarab beetles must be mentioned, and there are also many varieties of scarab beetles, such as the tea-colored scarab and the copper-green scarab. However, scarab beetles mainly harm Eucommia ulmoides seedlings, seriously affecting the survival rate of Eucommia ulmoides. So when we find this pest during cultivation, we can use phoxim emulsifiable concentrate for control.

5. Leopard moth

The leopard moth is actually most harmful during its larval stage, so we must control it in time, otherwise it will cause serious damage to the trunks and branches of Eucommia ulmoides. The hollow trunks we often see are basically caused by this pest, and in severe cases it can also cause the plant to wither and die. First, when clearing the garden in winter, we should clean it as thoroughly as possible; second, we can control leopard moth eggs with quicklime and sulfur powder mixed with water. Finally, we can also use dichlorvos or other insecticides, plugging the holes with cotton to eliminate them.

The several pests and diseases above are all very common. Of course, there are many other pests and diseases as well, such as leaf blight, gray leaf spot, brown leaf spot, mole crickets, cutworms, slug moths, and tea bugs. If you don't know how to control them, remember to leave us a message.