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Correct Methods and Techniques for Summer Pruning of Sichuan Pepper Trees
Girdling After girdling a Sichuan pepper tree, the effect on promoting flower bud formation is very good. Since Sichuan pepper trees form flower buds more easily than ordinary fruit trees, half-girdling is sufficient. The timing of girdling should be no later than early June. The width of the cut is generally 1/6 of the diameter of the branch or main trunk. If the tree is vigorous and conditions are good, it can be appropriately widened; otherwise it can be narrower. The girdling wound must be disinfected to prevent infection. Girdling is mainly for trees with vigorous vegetative growth, and it cannot be done continuously for fruiting either. After the first girdling, wait two
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Control Methods for the Ligustrum Looper Moth Damaging Ornamental Garden Trees
Distribution and Damage The ligustrum looper moth Naxa seriaria Motschulsky, also known as the lilac looper moth, belongs to the order Lepidoptera, family Geometridae. It is distributed throughout Northeast, North, Northwest, Southwest and East China. The larvae damage Syringa reticulata, Syringa pekinensis, Syringa reflexa, Syringa oblata, Syringa wolfii, Syringa oblata var. alba, ligustrum, large-leaved ligustrum, osmanthus, camellia, tea, privet, Manchurian ash and Chinese ash, etc. The larvae gather in groups to feed on leaves and often strip the leaves completely. The larvae have the habit of spinning silk to form webs; in severe cases the webs cover the tree crown,
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Scraping bark from pear trees in winter is the key to growing good pears
The farming proverb says: "If you want to eat good pears, scrape the bark in winter." In the cold winter season, scraping off the old bark from pear trees that have already borne fruit can effectively eliminate the fungal spores of pear scab, ring rot, anthracnose, pear rust and other diseases that remain inside and outside the old cracked bark of pear trees, as well as the eggs of many pear tree pests such as pear psylla, aphids, fruit borers and scale insects, ensuring healthy growth of the pear trees, high quality, high yield and high returns. Scraping the bark must be thorough. When scraping bark from pear trees, you must remove the old cracked bark, rotten disease, pear scab, ring rot, anthracnose, scale insects, pear psylla,
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Management Techniques for Large Suli Pear Trees After Transplanting
1. In the winter of the year of transplanting, the old scaly bark on the trunk and main branches must be thoroughly scraped off, and the scraped debris should be collected and burned. After scraping, the trunk or large branches should be coated with whitewash or sprayed with 5-degree lime sulfur mixture. For disease spots such as rot on the branches, use a knife to scrape the disease spots clean, then apply 40% asomate 50-fold solution. During the growing season, strengthen pest and disease control to preserve leaves and promote branch growth. 2. After sawing off large branches of transplanted large trees, smooth the wounds and apply 800-fold carbendazim solution for protection to prevent infection. Larger wounds should also be sealed with clay, then wrapped tightly with plastic film.
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Why are there cone-like objects on young spruce trees? Control of the larch adelgid
On young spruce trees, round objects resembling small cones often appear in June. They are actually galls formed by the damage of the larch adelgid (Adelges laricis). Completing one life cycle of the larch adelgid requires several transformations through different forms on two tree species, spruce and larch. For its life process, see "156. What are the white hairs on larch leaves". Before the galls split open, remove the galls on spruce by hand. Strengthen preventive measures to prevent the transport and planting of infected seedlings. Spruce and larch must not be planted mixed or close together; the isolation distance
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Key Management Techniques for Greenhouse Peach Trees Before Temperature Increase
I. Pruning To ensure a relatively good yield from greenhouse peaches, long-branch pruning should be adopted, keeping as many branches as possible and removing as few as possible. According to the space inside the greenhouse and the requirements of tree shape growth, while retaining 3-4 basic scaffold branches per tree, remove large branches that disrupt the tree shape, weak branches, non-flowering branches, diseased and pest-infested branches, overly dense branches, and crossing or overlapping branches; thin out or flatten the upward-growing medium and long fruiting branches; leave the extension branches unpruned; leave medium and long branches unpruned; and cut back the downward-hanging fruiting branches. The pruning amount should be controlled at about 10% of the total, so that after pruning each peach tree retains 8
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What to do about fruit drop in jujube trees in summer? Growers need to prevent it in advance
Regulate the distribution of nutrients so that they flow more concentratedly to the jujube fruits. Measures: 1. Bend branches to open the angle. For relatively upright branches, change their direction by propping, pulling and other methods to disperse apical dominance; doing so can enhance ventilation and light penetration in the tree canopy, so that branches can also set fruit evenly in summer. 2. Remove sprouts and pinch the growing tips. For newly sprouted jujube shoots, when there is no room for development, remove them from the base or cut back to the rosette, keeping only 2-3 jujube fruiting spurs at the base. This can effectively reduce nutrient consumption, so that nutrients accumulate
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The plane tree fluff problem is expected to be solved: Huazhong Agricultural University has cultivated hairless plane trees
It was learned from Huazhong Agricultural University that the university has cultivated hairless plane trees, which is expected to solve the problem of plane tree fluff pollution. The scientific name of the French plane tree is "Platanus", and it has advantages such as fast growth and a large, dense canopy, and is known as one of the "world's five major street trees." But from April to June each year, the seed balls of Platanus scatter and the pappus flies about, not only polluting the environment but also affecting people's health. For this flying fluff pollution, chemical pruning is mostly used in China, that is, spraying chemical agents to promote early shedding of the seed balls. But this method is labor-intensive and time-consuming, and is not easy to promote on a large scale.
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Detailed Explanation of Key Techniques for Autumn Management of Greenhouse Apricot Trees
I. Soil, Fertilizer and Water Management 1. Apply base fertilizer early. The time for applying base fertilizer to greenhouse apricot trees should be earlier than that for open-field cultivation, preferably between late summer and early autumn. Applying base fertilizer at this time, due to the high soil temperature, coincides with the peak period of apricot root growth, so damaged roots heal easily, which can promote photosynthesis of aboveground leaves and promote flower bud differentiation. The fertilizer should be mainly organic fertilizer, and the application rate should be 20%-30% more than that for open-field cultivation, applying 3000-4000 kg of decomposed organic fertilizer per mu. Soil fertilization can be combined with autumn deep plowing, and the earlier the better. Usually the strip trench fertilization method is used, at the outer edge of the tree canopy projection
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Dalu Tribute Jujube is a new variety of premium jujube trees
Dalu Tribute Jujube is a newly bred winter jujube variety from the Shandong Province Spark Science and Technology Service Base. Its characteristics are as follows: 1. Extremely attractive appearance. The fruit of this variety is oblong, for fresh eating, with a single fruit weighing over 30 g. The peel is a mix of reddish-brown and emerald green with a waxy luster. The skin is thin and the flesh is crisp, tender and juicy, sweet and fragrant, rich in nutrients and of excellent quality, with a small pit and an edible rate of 95.21%. 2. Extremely late ripening. This variety ripens from late September to early October, making it the latest-ripening jujube variety currently in China. 3.
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