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What are the control methods for the jujube inchworm pest?
This insect, also known as the jujube looper, occurs commonly and is widely distributed across all jujube-producing regions of China, where its larvae feed on tender buds, flower buds and leaves. In years of severe outbreak, it can strip the jujube buds and leaves completely bare, resulting not only in no yield that year but also affecting fruit set the following year. [Occurrence pattern] This insect has 1 generation per year. It overwinters as pupae in the soil layer near the tree trunk. The following March, adults begin to emerge from the soil and eclose, with April being the peak period of eclosion and May the final period, the entire eclosion period lasting as long as about 60 days. The egg stage lasts 10-20 days, and hatching begins in mid-April,
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What are the control methods for the peach globular scale?
In recent years, the peach globular scale has occurred severely in the nectarine orchards of our town. In mild cases, tree vigor weakened and yields declined; in severe cases, there was total crop loss and even tree death. To address this, we carried out two consecutive years of pesticide screening and control, with very good results. We summarize them as follows: 1. Strengthen comprehensive fertilizer and water management measures, keep the trees vigorous, ensure ventilation and light penetration, and pay attention to protecting natural enemies. 2. Before bud break, in early to mid-March, when overwintering nymphs emerge from dormancy, their body surface wax is still sparse, so timely control can achieve good results. Choose 5-degree lime sulfur
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Key Points of Jujube Drying Processing Technology and Detailed Production Methods
(1) Process flow: Raw material selection → blanching → drying → packaging. (2) Operating points: Selection of raw materials: Choose varieties with thin skin, thick and dense flesh, high sugar content, and small pits. Before drying red jujubes, generally only a simple sorting is needed, with no other treatment. Blanching: First blanch the jujubes in boiling water for 5-10 min, cool immediately, then spread out to sun-dry, which can improve the quality of the dried jujubes. Natural drying: Sun-drying red jujubes is relatively simple; generally choose
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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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Methods and Key Technical Points for Controlling Peach Shoot Growth and Promoting Flower Formation
Many peach growers have called to ask how to stop peach shoot growth and form more flower buds. The main factor affecting flower bud differentiation is the conflict between reproductive growth and vegetative growth. When vegetative growth is too vigorous, it seriously affects reproductive growth, that is, flower bud differentiation. Therefore, during the flower bud differentiation period (late May to before leaf fall), attention must be paid to the balance between the two in order to ensure normal flower bud differentiation. 1. From late May to June, pinch off the shoot tips at the 10-12 leaf position on autumn shoots to promote flower bud differentiation and branching, or spray Shoot Control Ling (Kongshao Ling).
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How to disinfect a pear storage room? Detailed methods and steps shared
(1) Bleaching powder: Prepare a 10% solution from bleaching powder containing 25%-30% available chlorine. Spray the clear liquid above at a rate of 40mL per cubic meter of storage capacity. Take protective measures when using. After use, the storage room must be ventilated to remove the odor. (2) Formalin: At a ratio of 15mL of formalin per cubic meter of storage capacity, place the formalin with an appropriate amount of potassium permanganate or quicklime, add a little water, and when gas is generated, keep the storage door tightly closed and fumigate for 6-12h. Only after opening the storage and ventilating can the storage room be used.
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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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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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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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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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