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Control Methods and Technical Key Points for Powdery Mildew of Black Locust
Methods for controlling powdery mildew of black locust: 1. Promptly clear away diseased dead branches and fallen leaves, and burn them in a centralized manner. 2. In the early stage of the disease, spray a 2000-fold dilution of 10% Score granules, or a 1500-fold dilution of 25% Triadimefon wettable powder, or a 3500-fold dilution of 30% Triflumizole wettable powder, which can achieve good control results.
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Occurrence Patterns and Control Methods of the Rice Water Fly in the Aksu Region
The rice water fly (Ephydra macellaria Egger) belongs to the order Diptera, family Ephydridae. It occurs extremely severely in newly reclaimed salinized rice areas and is one of the major pests in rice production in the Aksu region. The insect gnaws on primary and secondary roots, causing poor development of rice seedlings or floating seedling death. Surveys of rice in the Aksu region from 2002 to 2003 found that yield losses in lightly infested fields reached 5.8%-8.1%, and in heavily infested fields reached 40.5%-56.1%, seriously affecting
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Causes and Control Methods for Short, Thin, and Hollow Scallion Stalks
During production, various factors can cause the scallion stalk to be short, thin, and hollow, thereby reducing the yield and quality of scallions. I. Causes of short, thin, and hollow scallion stalks 1. Variety type Scallions are divided into two types: long-stalk and short-stalk. The length of the scallion stalk is related to the variety, and long-stalk varieties should be used in production. 2. Soil quality and cultivation conditions The selected plot has heavy clay soil, is plowed shallowly and not finely; during the growing period, intertillage and hilling are not timely, and the soil below the roots becomes compacted; planting is shallow, row spacing is small, base fertilizer is insufficient, and topdressing
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What are the control methods for the ginger eye gnat?
It is a major pest during ginger storage. The larvae are commonly known as ginger maggots and can also damage seed ginger in the field, affecting both the yield and quality of ginger. This insect is moisture-seeking and cryptic; newly hatched larvae bore under the ginger skin to feed. Those feeding at the "rounded head" of the ginger bind together frass with silk webbing, cover it with debris, and hide inside. The larvae are active, their bodies constantly wriggling and their heads swaying as they spin silk webbing. At the damaged parts of the ginger, only the epidermis, coarse fibers and granular frass remain, and the ginger may also rot. Control methods
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What to Do When Shell Mushrooms Appear? Detailed Explanation of Prevention and Control Methods
Due to excessively strong light, the fruiting bodies lose water rapidly and shell mushrooms are prone to develop: the stipe is short and thick, and the stipe cannot be seen from the outside; the cap is underdeveloped and shell-shaped in appearance, with no gills or only traces of gills, and the cap color turns darker and glossy. Prevention and control methods: add more covering material to the mushroom shed. Reduce ventilation, increase water spraying, and raise the relative air humidity in the mushroom shed.
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Comprehensive Control Methods and Technical Key Points for Mold Contamination in Nameko Mushroom Cultivation
Nameko mushroom, also known as slippery mushroom, has a delicious flavor and is rich in nutrients, enjoying a high reputation on the international market. In recent years, the nameko mushroom industry in our county has developed rapidly, but mold contamination occurs commonly, causing reduced yields in mild cases and total crop failure in severe cases. Therefore, whether mold contamination can be effectively prevented is the key to improving the quality and yield of nameko mushrooms. 1. Types of mold and their damage In nameko mushroom cultivation, common contaminating molds include Trichoderma, Penicillium, Neurospora, and Aspergillus. These molds rapidly reproduce and spread under conditions of high temperature, high humidity, and poor ventilation, and in the later stage form green
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Yellow Peach Disease Occurrence Patterns and Control Methods
1. Peach leaf curl: The occurrence and damage of this disease are closely related to the climate in early spring. When peach buds begin to swell, if the temperature is low (10-16°C), lasts for a long time, and humidity is high, the disease occurs severely. When the temperature is above 21°C, the disease basically stops developing. 2. Peach bacterial shot hole: The pathogen of this disease overwinters in the diseased tissues of branches. After the beginning of spring, as the temperature rises, the bacteria in the diseased tissues begin to become active. After the peach tree blooms, the epidermis of the lesions ruptures, and the lesions overflow from the diseased tissues. The bacterial cells spread through wind, rain, and insects.
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What are the control methods for arrowhead leaf spot disease?
1. Symptoms This disease mainly damages leaves and leaf stalks. The leaf spots are yellowish-brown to brown, polygonal, elliptical or irregular in shape, slightly zonate, surrounded by a yellow-green or green-brown halo; the spots sometimes merge with one another into large lesions, and in severe cases the leaves turn yellow and wither. On leaf stalks, the disease often produces short, streak-like brown spots, and under high humidity a gray mold grows on the surface of the spots. 2. Transmission route and disease pattern This disease is caused by infection by the fungus Cercospora sagittariae of the subphylum Deuteromycotina. The pathogen mainly overwinters as mycelium and conidiomata on diseased plant residues
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A Detailed Explanation of the Occurrence Patterns and Control Methods of the Jujube Leafroller
The jujube leafroller belongs to the order Lepidoptera, family Tortricidae. Common names include leaf-tying worm, leaf-sticking worm, leafroller, and so on. It occurs and causes damage to varying degrees in most jujube-growing areas nationwide, and is one of the major pests of jujube trees. I. Damage characteristics: The jujube leafroller uses its larvae to spin silk and damage buds, leaves, flower buds, flowers, and fruits. Especially the third-generation larvae, which are in the fruit-coloring period, often glue jujube leaves and jujube fruits together with thin silk, and within this shelter gnaw at the jujube skin and flesh at the fruit stalk, causing a large number of fallen and rotten fruits. II. Life habits: In Shandong, He
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Common diseases of the tea tree mushroom and their control methods
The tea tree mushroom is a rare mushroom variety that has become very popular in domestic and international markets in recent years, but because pest and disease problems occur rather frequently, growers often fail to accurately identify the symptoms and pathogens and blindly apply chemical pesticides, which damages the mushrooms and leads to poor cultivation returns. The symptoms, pathogens and control measures of common infectious diseases are described below: 1. Brown rot. Affected fruiting bodies stop growing, and the caps and stipes rot and give off a foul odor. The pathogen is Mycogone perniciosa, which causes disease mainly through contaminated water or through contact with the hands, tools and other items that have touched diseased mushrooms.
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