What are the skills of the rich tree in pest control?

The common diseases of rich trees are root rot and leaf blight.

The incidence of root rot mostly starts from the root or rhizome, spreads upward, the phloem soft rot becomes flooded, and the xylem changes color. It is generally because the environment is damp and easy to cause root rot. The key to prevention and control is to create suitable environmental conditions for it and keep it dry and clean. After the onset of the disease, it can be treated with Pulek or Zinc-Manganese Mendale spray.

The disease of leaf blight mainly occurred at the edge of the leaf, and there were small brown spots on the edge of the leaf at the initial stage of the disease, which gradually expanded inward to form withered leaf spots, which had an obvious boundary with the healthy parts. In the later stage of the disease, there are many small black spots on the disease spot, which affect the ornamental effect. Diseased leaves should be removed in time after diseased leaves are found, at the same time, management should be strengthened in the process of cultivation, timely watering and fertilization, and foliar fertilizer should be sprayed in the growing season. After the occurrence of diseases, carbendazim, chlorothalonil and other agents can be sprayed.

The pest is mainly sugarcane moth. For prevention and control at the beginning of winter, the injured parts of the stem can be irrigated with 1000 times of liquid in winter, and 3% carbofuran can be mixed into the cultivation substrate, once every 10 days, 2 or 3 times in a row can kill the overwintering sugarcane moth larvae. If the diseased plant is seriously injured, it should be burned in time. In addition to the prevention and control of diseases and insect pests, it is also important to have proper management in order to prevent them effectively.

The rich tree, also known as Malaba chestnut, is a perennial evergreen tree of the genus Castanea of the kapok family. It is native to Central America. It can be cultivated in open field in Guangdong, Hainan, Fujian and other places in China. Like a warm, humid environment.

The cultivation medium is the acid sandy loam rich in humus. It can be made by mixing rotten leaf soil, peat and appropriate amount of river sand. The optimum growth temperature of the rich tree is 15-30 ℃. Light requirements are not strict, like light, but also have a certain degree of negative resistance. Indoor scattered light can grow well. However, if it is too shady, it should be timely placed in a brighter place for maintenance, which can restore growth.

The rich tree has a certain degree of drought tolerance, and keeping the soil moist during the growing period can promote its growth, which can be watered once every 3 to 4 days. Watering should be controlled in winter and the soil can be slightly dry. The demand for fertilizer is not high, and proper fertilization can be applied in the peak growing season, mainly nitrogen fertilizer. There is no fertilization in winter.

Prevention and control skills and matters needing attention of diseases and insect pests in rich trees how to control diseases and pests in rich trees

When it comes to the rich tree, I believe we are no stranger to it, the rich tree has a good moral, and has a certain ornamental value. Therefore, it is deeply loved by many flower friends. Many flower lovers will also choose to plant their own wealth trees at home. So, do you know what matters needing attention in the prevention and control of diseases and pests in the rich tree? Let's study with the editor.

The maintenance methods of the rich tree:

The common diseases of rich trees are mainly yellowing of leaves, viral withering, root rot and so on, which requires careful observation and targeted solutions. The center of the rich tree at home is not only to beautify the environment and fresh air, but also to play a very important role in fengshui, so we should learn more about the maintenance methods of the rich tree.

1. The leaves of the rich tree turn yellow:

(1) Water yellow: it is caused by excessive watering, which is characterized by no obvious change in old leaves and yellowing of young leaves, which should be controlled immediately.

(4) hungry yellow: caused by insufficient fertilizer, low fertilization concentration, and long interval of fertilization; it is characterized by yellow young leaves and tender stems, and if it is not fertilized in time after seeing this phenomenon, it will cause yellow leaves and even death of the whole plant; for flowers that lack fertilizer, do not apply a large amount of thick fertilizer at one time, so as not to cause root burning.

(5) Iron deficiency yellow: Woody flowers in greenhouse, etc., due to great changes in soil fertility conditions, yellow leaves often appear, characterized by obvious young leaves, light old leaves, yellow mesophyll, green veins, and forming a typical network; ferrous sulfate solution can be used to solve the problem, the method is as follows: 7 parts of cake fertilizer, 5 parts of ferrous sulfate and 200 parts of water.

2. The roots of the rich tree are rotten:

(1) keep the cultivation environment dry and attach importance to the disinfection of cultivation media and sites.

(2) after the semi-finished products are unloaded into the operation shed, the head of the wealth tree is sprayed with Sukeling to prevent the harm of Botrytis cinerea.

(3) before planting, cut off the sprained and rotten tissue at the top of the main root with a sharp knife, then spray the wound with Sukeling, and plant it after drying.

(4) after a week of planting, the medium in the basin dries gradually, the healing tissue has been formed, and the new root has begun to grow. It is appropriate to spray the smooth rod of the rich tree with pluck, Anke or zinc and manganese (Redomir-manganese zinc), and the liquid should flow into the basin soil along the pole. Since then, fungicides have been rotated once a week with Anke, carbendazim, Redomir or carbendazim.

(5) if Pythium is active, it should be sprayed with Pulek, carbendazim, Redomir or Phytophthorin, and the general effect is about two weeks. If the weather is still bad, different chemicals should be sprayed to prevent the development of drug resistance. If festering plants are found during this period, they should be discarded immediately.

3. The leaves of the rich trees are withered:

(1) timely removal of diseased leaves and destruction

(2) during the cultivation of the rich tree, the maintenance and management should be strengthened, timely watering and fertilization, and foliar fertilizer can be applied 2-3 times every growing season, such as 0.5% potassium dihydrogen phosphate or 200 times of double-effect micro-fertilizer.

(3) before the seedlings are transported from the south to the north, protective fungicides are sprayed on the leaves, such as 70% chlorothalonil 800 times, or 18% multi-fungus copper milk powder 200 times, or 50% bacilli 600 times. After being transported to the north, it should be planted in time, strengthen fertilizer and water management, and prevent dehydration and fattening. Starting from the rainy season, the cultivation of rich trees in the south can be sprayed with 50% carbendazim every 10-15 days, or 70% chlorothalonil and 1500 times methyl thiophanate.

The above is all I know about the rich tree today. I hope it will be helpful for you to read this article. If you want to know more about the rich tree, please continue to pay attention to the succulent flower bed, we will provide you with more related knowledge!

Prevention and control skills of diseases and insect pests in rich trees

The rich tree, also known as Malaba chestnut, is a perennial evergreen tree of the genus Castanea of the kapok family. It is native to Central America and can be cultivated in Guangdong, Hainan, Fujian and other places in China. The optimum growth temperature of the rich tree is 15 ℃ to 30 ℃. It likes warm and humid environment, light requirements are not strict, like light, but also have a certain negative tolerance, indoor scattered light can grow well. The cultivation substrate is acid sandy loam soil rich in humus, which can be mixed with rotten leaf soil, peat and proper amount of river sand.

The rich tree has a certain degree of drought tolerance, keeping the soil moist during the growing period can promote growth and can be watered once every three or four days. Watering should be controlled in winter and the soil can be slightly dry. The requirement of fertilizer is not high, and it can be fertilized properly in the peak growing season, mainly nitrogen fertilizer and no fertilizer in winter.

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The common diseases of rich trees are root rot and leaf blight. In general, the damp environment is easy to cause root rot, the disease starts from the root or rhizome, spreads upward, the phloem soft rot becomes flooded, and the xylem changes color. Suitable environmental conditions should be created for the plants to keep them dry and clean. After the onset of the disease, it can be treated with Pulek or Zinc-Manganese Mendale spray.

Leaf blight mainly occurred at the edge of the leaf, and there were small brown spots on the edge of the leaf at the initial stage of the disease, which gradually expanded inward to form withered leaf spots, which had an obvious boundary with the healthy parts. In the later stage of the disease, there are many small black spots on the disease spot, which affect the ornamental effect. Diseased leaves should be removed in time, at the same time, management should be strengthened in the process of cultivation, timely watering and fertilization, foliar fertilizer should be sprayed in the growing season, and carbendazim and chlorothalonil can also be sprayed.

The pest is mainly sugarcane moth. For prevention and control at the beginning of winter, the injured part of the stem can be irrigated with 1000 times of liquid in winter, and 3% carbofuran can be mixed into the cultivation medium. Once every 10 days, two or three times in a row, the overwintering sugarcane moth larvae can be killed. If the diseased plant is seriously injured, it should be burned in time.