What are the common methods for controlling pests and diseases of Eucommia ulmoides
Eucommia ulmoides is a medicinal material with extremely high medicinal value, occupying a very important position in both ancient medicine and modern medicine. Due to the increase in market demand for Eucommia ulmoides, more and more people are growing it. However, this medicinal material has a relatively high rate of disease and pest infestation, so what diseases harm the growth of Eucommia ulmoides? What pests are there? Do you know the methods for controlling these pests and diseases? Now follow the editor to learn about them.
1. Root rot
The peak period for root rot is between June and August, and it is most harmful during the seedling stage, but it also has a great impact on adult Eucommia ulmoides. Root rot mainly harms the root system of Eucommia ulmoides, starting with the lateral roots, then as the condition worsens, it spreads to the main root, and finally causes the entire root system to rot, and the whole plant loses its vitality and gradually withers. To prevent root rot, the first thing is to choose a good planting site, then carry out reasonable water and fertilizer management, and timely drainage and irrigation. In the early stage of root rot, we can use thiophanate, tuzet, and carbendazim for control, and dig out and burn the affected plants, and disinfect and sterilize the soil.
2. Damping-off
Damping-off is also called seedling blight, and this disease has the greatest impact on Eucommia ulmoides seedlings, especially seedlings propagated by seeds; grafted seedlings generally rarely develop damping-off. Damping-off mainly occurs during high temperature and rainy periods, which easily causes pathogen infection, and then the cotyledons of Eucommia ulmoides seedlings rot, showing decay spots, and finally the roots become infected, causing root rot, and Eucommia ulmoides wilts and lodges. The control method for damping-off is the same as 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 harms the leaves of Eucommia ulmoides, and whether at the seedling stage or the adult 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 substances appear where the spots are, and when the condition worsens, the leaves completely turn 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 planting management and improve the resistance of Eucommia ulmoides itself.
4. Scarab beetles
Among the pests that are relatively harmful to Eucommia ulmoides, scarab beetles must be mentioned, and there are also many varieties of scarab beetles, such as tea-colored scarab beetles, copper green scarab beetles, etc. However, scarab beetles mainly harm the seedlings of Eucommia ulmoides, seriously affecting the survival rate of Eucommia ulmoides. So when we find this pest during the planting process, 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 impact on the trunk, branches, and other parts 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 orchard in winter, we should clean it as thoroughly as possible; second, we can use quicklime and sulfur powder mixed with water to control leopard moth eggs. Finally, we can also use dichlorvos or other insecticides and plug 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, such as leaf blight, gray spot disease, brown spot disease, mole crickets, cutworms, slug moths, tea bug stink bugs, etc. If you do not know how to control them, remember to leave us a message.