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What are the control methods for powdery mildew on melons?
I think many people have eaten melon. It is a kind of melon that looks a bit like a pumpkin. It does not belong to vegetables, but should belong to a fruit. There are many people growing melon on the market, because melon is not only tasty but also relatively cheap. Therefore
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How to prevent and control silver leaf disease in pear trees? Growers need to master these methods
In recent years, silver leaf disease has commonly occurred in pear trees in some areas of our city. This disease is a devastating fungal disease, and when it occurs severely, it can cause pear orchards to decline within a few years. After becoming diseased, pear trees weaken in vigor. Yield decreases, and severely diseased trees die 2-3 years later, seriously affecting pear production
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What are the methods for identifying pear tree stink bugs?
(1) Pear lace bug: ① Adult: body length about 3.5 mm, flat, dark brown. Head small, wings broad, compound eyes dark black, no simple eyes. Pronotum raised, with both sides protruding in a wing-like shape, semi-transparent, and both with net-like patterns. Forewings slightly rectangular; when at rest, the markings formed by the two overlapping forewings appear like the character "x". Hindwings membranous, white and transparent. Abdomen golden yellow, with black markings on it.
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What are the control methods for cherry wood rot?
The symptoms appear on various wound sites such as frost injury, insect injury, and mechanical injury on branches and trunks, where small fruiting bodies of the pathogen are scattered or clustered, which are its external symptoms. The affected xylem forms a rather indistinct white sapwood rot. Pathogenic fungus, Basidiomycota, Agaricomycetes, Aphyllophorales
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How to prevent and control gummosis in cherry trees? Growers need to master these methods
Symptoms Gummosis is an important disease of cherry trees, and its symptoms fall into two types: dry rot type and canker type gummosis. The dry rot type mostly occurs on the trunk and main branches. In the early stage, the lesions are irregular, dark brown, and hard on the surface, often causing gumming. In the later stage, the lesions become elongated, dry-shrunken and sunken, sometimes with cracking around them, and densely covered with small black dots on the surface.
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How to prevent and control anthracnose in peach trees? These methods are very practical
Along with the adjustment of the agricultural industrial structure, the planting area of peach trees in our county has continued to expand. Due to the influence of various factors such as climatic conditions, varieties, and management, peach anthracnose occurs rather severely and has a relatively large impact on peach yield and quality. Effective prevention and control of anthracnose is very important for increasing yield
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What are the control methods for scale insects on peach trees
There are many species of scale insects that harm peach trees. The main species occurring in our province is the globose scale (Eulecanium kunoense), belonging to the order Homoptera, family Coccidae, genus Eulecanium. When its population is large, the affected branches are covered with dense layers of scale shells, causing poor tree growth; in severe cases, the leaves and small branches wither and die, and even the whole plant may die.
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How to prune a peach tree? Master the correct peach tree pruning method
1. Trunk height: For a generally shaped tree, the trunk height is 30-50 cm; the specific height should be determined according to the variety, terrain, planting density, management method and the growth of the individual tree. For varieties with strong growth vigor, fertile soil and a wide branch spreading angle, the trunk can be set somewhat higher.
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What are the propagation methods for jujube saplings? Teach you how to plant them correctly
The jujube tree is an important fruit tree in our country. Its root system is well developed, and some roots close to the ground can produce vigorous root-sucker seedlings. Propagating by dividing root-sucker seedlings is both simple and labor-saving, and is an important method for developing jujube trees. The division propagation of jujube root-sucker seedlings is carried out in the following two steps
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What are the control methods for the jujube gall midge, a pest of jujube trees?
Jujube gall midge (Contarinia sp.) (1) Aliases and taxonomic status: jujube bud maggot, leaf-rolling maggot, jujube maggot, belonging to Diptera, Cecidomyiidae. (2) Distribution: This insect is distributed in all jujube-growing areas across the country, with the five major jujube areas of Shandong, Shanxi, Henan, Hebei and Shaanxi suffering the most severe damage; it is one of the main pests of jujube leaves.
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