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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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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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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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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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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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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 and control methods of downy mildew in codonopsis (Codonopsis pilosula)
Irregular brown lesions appear on the leaf surface, and a gray mold-like growth (conidiophores and conidia) appears on the underside of the leaves, which can cause the plant to die. Control method: remove diseased plants and fallen leaves and burn them in a centralized manner; during the disease period, spray 300-fold dilution of 40% Shuangyiling or 1000-fold dilution of 70% chlorothalonil, once every 7 to 10 days, for 2 to 3 consecutive times.
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Symptom Identification and Control Methods of Rust Disease in Codonopsis pilosula
It damages the leaves. The diseased area on the underside of the leaf is slightly raised, forming the uredinium, which later ruptures and releases orange-yellow urediniospores. The disease is most severe from June to July. Control methods: (1) Clear away withered branches and fallen leaves in winter. (2) During the disease period, spray with a 200-fold dilution of 50% dinitro compound or a 400-fold dilution of 97% sodium dithiocarbamate, once every 7 days, for 2 to 3 consecutive applications.
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Symptom Identification and Control Methods for Peach Fungal Shot Hole Disease
[Symptoms] When leaves are infected, circular or nearly circular lesions initially appear, with purple edges and slight concentric rings, measuring 1-4 mm in size; later, grayish-brown mold-like growth develops on the lesions, the center dries up and falls out, forming shot holes with neat edges, and when there are many holes, the leaves drop off. When new shoots and fruit are infected, the symptoms are similar to those on leaves. [Disease Development Pattern] [Regional Damage Severity] [Integrated Control] (1) Eliminate the source of inoculum. Promptly prune diseased branches, thoroughly remove diseased leaves, and burn or bury them deeply. Before peach trees bud, spray
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What are the control methods for the wolfberry psyllid?
The wolfberry psyllid, also called pig-snout honey or jaundice, belongs to the family Psyllidae and is a major pest of the wolfberry (goji). Adults and nymphs damage branches and leaves, sucking sap, which weakens the tree, causes early leaf drop, and seriously affects the following year's yield. The wolfberry psyllid has 4 generations a year, overwintering as adults in bark crevices, wall cracks, soil cracks, dead branches and fallen leaves, and weeds. In late March of the following year, the adults emerge from dormancy, reproduce and cause damage; damage is most severe from June to October, and at the end of October the last-generation adults overwinter. Its control methods are the same as those for aphids.
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