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What are the control methods for the main pests and diseases of wampee?
How do you control the main pests and diseases of wampee? Please introduce the main pests and diseases of wampee, which can be controlled by referring to the following methods: 1. Anthracnose. Wampee anthracnose is a common disease in production, and it can be infected at all growth stages. In recent years, it has occurred more severely from June to October. Control methods: use fertilizer and water scientifically to strengthen the tree vigor,...
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Control Methods and Technical Key Points for Fruit Cracking in Wampee
How to plant and manage Ji Xin wampee (chicken-heart wampee)? Please advise. Ji Xin wampee is the highest-quality variety among all wampee strains, and is deeply welcomed by consumers for its "large fruit, thick flesh, and sweet taste." It is easy to cultivate and manage, and has strong adaptability to various climatic factors and soil conditions, making it very suitable for cultivation and production in this region. 200...
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How to prevent and control jujube brown spot disease? A full breakdown of practical tips
How to prevent and control jujube brown spot disease? Please explain the methods. Jujube brown spot disease is one of the main causes of leaf drop and fruit drop in winter jujube, and its damage is extremely serious, so prevention and control of this disease must be grasped early and well. Brown spot disease is what jujube farmers commonly call rigid rot disease or rotten fruit disease. The disease mostly starts from the jujube stalk, and some also occurs from the middle part of the jujube fruit...
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What are the methods for controlling underground pests of sweet potatoes?
How to control underground pests of sweet potatoes? Please give guidance. During the period of rapid tuber expansion of sweet potatoes, drench the root area once every 10-15 days with a clarified infusion made from 25-30 times diluted superphosphate mixed with dry, clean plant ash, or with a 15-20 times diluted clarified tobacco leaf infusion, etc., for 2-3 consecutive drenches, applying about 5-6 kg per sq m of soil each time...
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What are the common diseases of roses? A detailed guide to prevention and control methods
Symptoms: In the early stage of the disease, small purple-brown spots appear on the leaves, which later expand into nearly circular dark brown spots, often with a radial yellow halo at the edges. In severe cases, the spots merge, and the leaves wither and drop, especially in summer and autumn, causing massive leaf loss, leaving the lower part of the plant as bare stems. After young shoots are infected, dark brown streaks appear, slightly sunken, causing the young...
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How to Identify and Control Black Spot on Roses? A Detailed Guide to Practical Methods
This disease occurs commonly and causes serious damage, resulting in heavy leaf drop in roses and enormous losses. The pathogen is a fungus of the genus Actinonema in the subphylum Deuteromycotina. 1. Symptom identification: At the initial stage of the disease, brown radial lesions appear on the leaf surface, which gradually expand into circular or nearly circular lesions with a diameter of 4-12 mm; in severe cases...
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Detailed Explanation of the Onset and Control Measures of Black Spot Disease in Roses
Black spot disease of roses is a worldwide disease with a fairly wide distribution, occurring in every region where roses are cultivated. In recent years, the disease has been severe in many provinces and cities in China. The occurrence of black spot disease can cause premature defoliation of roses, affecting rose growth and the survival rate of stem cuttings, and reducing ornamental and economic value. Black spot disease can also harm Rosa multiflora, rugosa roses and other plants...
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Occurrence patterns and control methods of black spot disease in Chinese roses
Black spot disease of Chinese roses (Rosa chinensis) and roses is a worldwide disease, occurring commonly across China. It mainly damages the leaves, followed by petioles, leaf tips, young tender shoots and flower stalks. It occurs severely in both southern and northern regions and other areas. The disease causes leaves to turn yellow and drop early. When the disease is severe in summer during April and May and in late summer during August and September, the leaves can drop completely, causing Chinese roses...
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Symptom Identification and Control Methods of Rose Black Spot Disease
The rose black spot fungus attacks leaves, young shoots and flower stalks. When leaves are first infected, small purplish-brown spots appear on the upper surface, gradually expanding into round or irregular dark brown lesions, 1-12 mm in diameter, with radiating edges, which is the characteristic symptom of black spot disease. In the later stage the leaves turn yellow, the center of the lesion becomes grayish-white, and on it are borne...
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How to prevent fruit drop of winter jujube in summer? Detailed control methods
How to prevent fruit drop of winter jujube in summer? Please guide. The following methods can be used to prevent fruit drop of winter jujube in summer: bending branches to open the angle. For relatively upright branches, bending can change their direction, disperse the growth polarity, slow down the vegetative growth momentum, and enhance the ventilation and light penetration of the tree canopy. Removing sprouts and pinching...
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