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What are the control methods for apple tree root rot?
Apple trees often suffer from root rot. Because the root system is buried in the soil, when the disease is initially contracted or mild, it is either not discovered or, once discovered, not accurately diagnosed, so the right treatment is not applied. In mild cases this leads to weak tree vigor and reduced yield and quality; in severe cases it causes the death of the plant, or even the loss of the entire orchard.
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Control of Root-Knot Nematode Disease in Balloon Flower
Along with the adjustment of the industrial structure, the balloon flower planting area in our district has been continuously expanding. However, due to years of continuous cropping, the occurrence of root-knot nematode disease has shown a spreading trend, causing balloon flower to lose its commercial value and reducing economic returns. 1 Disease symptoms After balloon flower is infected by root-knot nematodes, when the disease is mild
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Control Methods for Root Rot in Salvia miltiorrhiza Cultivation
1. Hazard symptoms: Root rot of Salvia miltiorrhiza occurs in hot and rainy seasons and damages the plant roots. In the early stage, only a few roots or part of the underground rhizome are affected first, gradually spreading to the entire root system. After the roots are damaged, wet rot occurs, the outer skin turns black, and the aboveground part develops
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Detailed Explanation of Control Methods for Root Rot in Saposhnikovia divaricata Cultivation
(1) Damage situation and symptoms: Root rot mainly affects the roots of Saposhnikovia divaricata. In the early stage of infection, the fibrous roots become diseased, and the diseased roots turn brown and rot. As the disease progresses, the lesions gradually spread to the stem, the vascular bundles are destroyed, losing their water-transporting function, leading to root-zone rot, and the leaves wilt
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What are the key field management techniques for Eucommia ulmoides?
Planting: After Eucommia ulmoides is planted, the root system has not yet taken firm hold, so intertillage should be shallow rather than deep, and weeds must be removed thoroughly. If intercropped with crops, it can be combined with the intertillage and weeding of the crops. Before the young Eucommia ulmoides plantation closes its canopy, the forest should be cleared and intertilled once each summer to promote the growth of young trees. Mature Eucommia ulmoides
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Detailed Explanation of Control Methods for Root Rot in Atractylodes macrocephala
Symptoms: The fine roots in the lower part of the diseased plant turn brown and rot, then spread to the upper fleshy rhizome and stem, showing dark brown sunken rotting spots, and the aboveground part begins to wilt. On the cut surface of the rhizome and stem, the vascular bundles show an obvious discoloration ring, and in the later stage the entire rhizome becomes spongy black dry rot, and the plant
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What should be noted before planting Sichuan lovage (Ligusticum chuanxiong)?
Sichuan lovage (Ligusticum chuanxiong) uses its root as medicine. People use it to make tea, which is mellow and tasty, cools and quenches thirst, and has effects such as dispelling wind and relieving pain, and promoting qi and blood circulation. 1. Cultivation method. Sichuan lovage is propagated by stem. Before planting, the soil should be deeply plowed, and for every 667 sq m use 120 kg of phosphate fertilizer, mixed with 1500 kg of farmyard manure as base fertilizer, then harrow fine and level, and make beds. When planting, select healthy stem nodes of uniform size, uniform thickness, and free of pests and diseases as seed sprouts, remove the upper tip, cut into small pieces of about 3 cm, each piece with one node disk, with 1.6 cm extending on each end of the node disk. After cutting, place them in a sunny, wind-sheltered, moist place, and soak the seeds with a 1000-fold dilution of carbendazim. You can also spray with a 150-fold dilution of 25% wettable phoxim, or dip them in 1:10 garlic juice, to control underground pests such as cutworms. Then pile them up and cover with gunny sacks. After 3-5 days, when white sprouts emerge from the node disks, they can be planted.
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Main Root Diseases of Tea Plants and Their Control Methods
1. Tea seedling white silk blight (1) Distribution and symptoms: Tea seedling white silk blight is a common root disease in nurseries. It has a wide distribution range and causes severe damage. Besides tea, it can also harm more than 200 kinds of plants including cucurbits, Solanaceae, hemp, tobacco, and peanut. It occurs at the root collar, where the diseased
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Control Methods and Technical Key Points for Root Rot Disease in Papaya Seedlings
Papaya root rot disease is also called papaya root rot. Symptoms: The disease mainly affects the root collar and roots, and seedlings during the nursery period and shortly after planting are more susceptible. It is especially likely when the groundwater level in the nursery site and cultivation site is relatively high or poor drainage causes waterlogging, and when the soil is highly clayey. The plant
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Control Methods for Root-Knot Nematode Disease in Hami Melon
Root-knot nematode disease is an important disease of Hami melon, occurring and distributed in some areas. It can develop both in protected cultivation and in open fields, with more severe occurrence in autumn. Infection at the seedling stage has a great impact on production. After the disease develops, the rate of diseased plants often reaches more than 60%, significantly affecting Hami melon production. Symptoms mainly
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