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How to prevent and control bud blight in hydrangea
Hydrangea bud blight is also known as hydrangea gray mold. It harms the buds and flowers of the plant. Symptoms: In plants grown in the open field, it readily occurs on dense spherical flower clusters, causing them to develop water-soaked rot. In greenhouse cultivation, buds readily turn black and wither. Pathogen: The pathogen is
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What are the control methods for Hydrangea ringspot virus?
[Distribution and Damage] Hydrangea (Hydrangea macrophylla), also known as bigleaf hydrangea, is a deciduous shrub planted throughout China. Viral infections are relatively common, with ringspot being the most frequent. It is generally latent; severely affected plants become stunted, with few or no flowers. [Symptoms] Leaves become crinkled,
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What to do about navel orange fruit cracking? Clever use of EM stock solution can prevent and control it
To prevent navel orange fruit cracking, there is usually no ideal technique. Only by adopting measures such as selecting excellent varieties; strengthening soil management, timely irrigation, scientific fertilization, and applying growth regulators can fruit cracking be minimized. But some fruit growers, in practice, found that spraying EM chlorophyll
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Control Methods for Three Major Physiological Diseases in Navel Orange Cultivation
For fruit cracking disease, the first step is to select varieties (lines) with strong cracking resistance. Generally, varieties (lines) with oval fruit shape, small navel or closed navel have better cracking resistance, such as Newhall and others; second, scientific management should be strengthened to enhance tree vigor. Especially during the dry period after the plum rain season and before the autumn rains arrive
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Pest and Disease Control Methods in Navel Orange Cultivation
Following the general policy of prevention first and integrated management, with agricultural control as the foundation, according to the patterns of pest and disease occurrence and development, reasonably applying chemical control, biological control, physical and mechanical control and other measures according to the time and local conditions, economically, safely, effectively and simply controlling
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Control Methods for Phomopsis Leaf Spot of Pineapple
Phomopsis leaf spot of pineapple is a common disease, belonging to one type of leaf spot disease, mainly affecting the leaves, impacting photosynthesis in the leaves, and causing the fruit tree to be unable to grow and develop normally. Symptoms Phomopsis leaf spot affects the middle part of the leaf; the initial lesions are elongated
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Control Methods for Termites in Pineapple Cultivation
Termites are also called insect officers, commonly known as white ants, large water ants, rising-water ants and shed insects, etc. They are insects of the class Insecta, order Isoptera. It is one of the five major pests worldwide. Symptoms: Termites damage roots, stems and leaves, often living in groups on them, and can induce pineapple wilt and sooty mold,
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What are the control methods for pineapple mealybug
The scientific name of the pineapple mealybug is Dysmicoccus brevipes (Cockerell), belonging to the order Homoptera, family Pseudococcidae. Dysmicoccus neobrevipes is the most commonly seen. Damage symptoms: adults and nymphs damage the rhizomes, leaves, fruits and seedlings of pineapple by sucking their sap. Affected leaves first show symptoms starting from the lower part,
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How are pests and diseases prevented and controlled during lemon cultivation?
The main fungal diseases of lemon fruit during storage are: black rot, sour rot, stem-end rot, blue and green mold, and anthracnose; the main physiological diseases are: dry scar and edema. (1) Stem-end rot: divided into brown stem-end rot and black stem-end rot, their symptoms are similar, but brown stem-end rot
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Control Methods and Key Technical Points for Lemon Gummosis
Lemon is rich in amino acids, vitamins, various trace elements and other nutrients essential to the human body, making it an excellent health fruit for human consumption. Lemon has a wide range of practical value, and demand is growing ever larger, with broad market prospects; at present, lemon is a fruit in short supply on the international market
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