The latest common diseases of Xanthoceras sorbifolia and its prevention and treatment

Xanthoceras sorbifolia is now one of the most important oil crops in China, its seeds and kernels contain a lot of oil, and it is very easy to grow. There are no particularly strict requirements for the growth environment, soil and other basic conditions, and the disease resistance is relatively strong, although its incidence is relatively low. However, if it is not properly managed, some diseases will occur. So what kind of disease will happen to the Wenchuan fruit tree? How to prevent and cure it? Let's take a look at it together.

1. Root rot nematode disease of Xanthoceras sorbifolia

Symptoms: root rot nematode disease is caused by nematodes parasitic on the rhizome, which mainly harms seedlings and young trees. generally, the disease begins after the seedlings are unearthed during sowing. Nematode invasion in soil and residual roots mainly occurs under wet conditions, the leaves will all wither and yellow, but will not fall for a long time, the part of the ground shrinks, stops growing, and gradually dies in the later stage. After pulling out the diseased seedlings, you will find that there is edema under the root neck, yellow water stains, and accompanied by a foul smell.

Prevention and control methods: the seedling land should be ploughed and cultivated in the wet season in autumn and winter to reduce the incidence of diseases. When sowing, the seeds should not be buried too deep, and the bottom water should be filled to avoid the spread of nematodes through water because of the lack of water in the later stage. It is necessary to strengthen mid-ploughing and soil cultivation at the seedling stage. If any abnormal harm is found, the diseased plants must be removed and disposed of in time. When pests are found, they can be sprayed with pesticides such as clenophos or clenbuterol.

2. Stem rot of Xanthoceras sorbifolia.

Symptoms: stem rot is a disease that occurs in most plants, mainly caused by Fusarium and Verticillium. The pathogen will survive the winter in the soil and is highly saprophytic. It is most likely to occur in an environment where the temperature is too high. Generally, the disease begins after two months of planting. Mainly harm to the underground roots, the roots will produce rotten dark brown sclerotia, and then begin to expand around the stem base, so that the cortex gradually rot, leaves also begin to turn yellow, withered, and finally the whole plant dies directly.

Prevention and treatment: stem rot is mainly infected through the root wound, so in the process of transportation and planting, it is necessary to avoid damage, produce mechanical injury, and let the bacteria take advantage of. Soak the seedlings with potassium permanganate and other solutions as far as possible to reduce the infection of seedlings, do a good job of cooling and shading when the temperature is high and hot, and use mature farm manure. Control the planting density, maintain the moisture in the soil, reduce its incidence, and also spray some malaxyl and other chemicals on the affected land to prevent and control the invasion of germs.

3. Coal fouling of Xanthoceras sorbifolia

Symptoms: coal fouling disease is mainly caused by wood lice sucking the juice of tender tissue, which often occurs above leaves and occasionally on tender shoots. Small black spots will appear on the leaves, and then gradually expand and extend, until all the small spots are combined, the whole leaf is covered with black mildew layer, and the young shoots are almost the same as the leaves when they get sick. When it's serious, the whole tree turns black.

Prevention and control methods: in the daily management of Xanthoceras sorbifolia during the culture process, the planting density of Xanthoceras sorbifolia should be controlled and the tree should be pruned properly. Improving the permeability of the forest garden and reducing the humidity in the garden can spray to control insects such as wood lice and aphids and prevent the spread of virus. When the tree is dormant in winter and is about to sprout in spring, some stone-sulfur mixture can be sprayed on the crown to eliminate the pathogen of the winter.

The above three are the more common diseases when planting Xanthoceras sorbifolia, although there are more than these three, but these three are the most representative. Therefore, we must pay attention to the management of the orchard, disinfect the soil during the winter, concentrate on cleaning up the diseased branches, and treat the diseased trees for symptomatic treatment. if there is no effect, they should be pulled out in time to prevent infection. This article is for reference only. I hope it will be helpful to everyone!