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How to control the San Jose scale? Control methods and technical key points
(1) Quarantine control. Inspect nursery stock, scions and fruit to prevent spread. (2) Manual and agricultural cultivation control. In combination with scraping bark in winter and spring, brush off and destroy the overwintering generation on branches; also carry out comprehensive control in nearby apple, pear and other orchards to prevent spread by wind and large insects, and pay attention to pruning out infested branches. (3) Protect and make good use of natural enemy resources. Where conditions permit, jujube orchards can rear and release natural enemies artificially. The main natural enemies include: Chilocorus rubidus, Chilocorus kuwanae, encyrtid wasps and birds.
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Symptoms of Tumor-like Mushrooms and Detailed Explanation of Prevention and Control Methods
Enoki mushroom (Flammulina velutipes) mycelial tumors mostly appear after the first flush of mushrooms is harvested and before the second flush has formed. When they form, tumorous mycelial masses appear inside the cultivation bag and gradually grow larger, looking as small as broad beans and as large as eggs. The surface of the mycelial tumor is covered with fine root-nodule-like granules, each with a smooth surface, irregular in shape and varying in size. Some are a single mass, while others are several masses joined together. They are relatively hard in the early stage, and later generally begin to rot slowly when the temperature is above 18°C. They are not easy to spot in the early growth stage; only in the middle stage, when they emerge from the surface of the substrate or bulge the cultivation bag outward, can they be discovered
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What are the control methods for jujube witches' broom? A detailed explanation
1. Symptoms Jujube witches' broom, also known as witches' broom disease, broom disease, and fire dragon disease, is a devastating disease. Fruit growers call it "mad jujube tree" or "male jujube tree." The jujube tree can be infected both above ground and below ground. Above-ground infection mainly manifests as flower organ degeneration, abnormal bud germination and growth, ultimately leading to clustered branches and leaves, elongation of the fruiting branchlet tips, clear veins, yellowing, or spoon-shaped curling of young leaves, with occasional ear-shaped leaves. Below-ground infection mainly manifests as clustered root suckers. In diseased trees, the entire flower organ degenerates into vegetative organs, and the flower stalk elongates, being 5-7 times longer than the flower stalk of healthy flowers,
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Control Methods for the Large Button Mushroom and Xylaria (Cracked Cap Fungus)
The large button mushroom and Xylaria (also known as chicken-foot fungus) are both major diseases of edible mushrooms. Both are parasitic diseases that live on the mycelium of edible mushrooms and absorb nutrients from it. Once the disease occurs on the mushroom logs or beds, the infected parts of the logs or beds will no longer produce mushrooms. The control methods are described below: 1. Large button mushroom. This pathogen mainly infects oyster mushrooms, shiitake mushrooms, enoki mushrooms, etc. 1. Symptoms. The disease first appears on the mushroom logs or beds as small white round granules
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How to control mushroom mites? Four trap-killing methods shared
Mushroom mites are one of the common pests in mushroom production. Controlling them with low-concentration chemical pesticides often yields poor results. Below are four methods for trap-killing mushroom mites, which are quite effective and can be chosen by mushroom growers. Rapeseed cake trap method: Heated rapeseed cake has a strong oily fragrance. On the bed surface where mushroom mites are causing damage, lay several pieces of wet cloth, and place gauze on top of the wet cloth. Sprinkle freshly roasted rapeseed cake powder on the gauze. After the mushroom mites gather on the gauze, remove it and scald them to death with boiling water. Sugar-vinegar trap method: Use
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Occurrence Patterns and Control Methods of Jujube Fruit Shrink Disease
I. Symptoms and Damage Jujube fruit shrink disease, also known as jujube fruit wilt disease, jujube fog wilt disease, etc., is one of the major diseases in all major jujube-growing regions of China. In jujube fruits affected by fruit shrink disease, yellow-brown irregular discolored spots first appear on the fruit shoulder or body, then the fruit skin becomes water-soaked and earthy yellow with indistinct edges, and later the fruit skin turns dark red, shrinks, and loses its luster. In the diseased area of the flesh, brown spots and earthy yellow softness appear from the outside inward. Diseased fruits taste bitter. The fruit stalk turns brown or dark brown. The entire diseased fruit is shrunken and small, and falls off before maturity.
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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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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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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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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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