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What are the prevention methods for potato diseases and pests?
Zhu Zhenhua, an expert from the Northern Vegetable News, recently received many consultation calls from vegetable growers in Anqiu, Shanghe, Yinan and other places. The most frequent topic was potato disease problems. Judging from the situations reported by phone, potato diseases have been occurring frequently recently, most commonly potato scab and powdery scab. Teacher Zhu said that each...
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Differences Between Potato Frost Damage and Disease and How to Identify Them
Frost damage: Judging by the plant's outward appearance, after the plant is frozen, the leaves and heart leaves show no lesions, and the leaf color is dark green. When exposed to sunlight, the leaves appear wilted, as if they had been boiled. After 1 to 2 days, the leaf margins curl inward until they wither and crumble, but the new leaves growing from the heart leaf show no wilting symptoms. Disease: After the plant is affected...
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Peach Tree Pest and Disease Control Methods and Technical Key Points
1. Note that peach trees are chlorine-sensitive crops. Applying chlorine-containing fertilizer easily causes root rot and yellowing leaves; in mild cases the tree vigor weakens, and in severe cases the plant dies. Therefore, do not apply chlorine-containing fertilizers. 2. Be careful about watering during the flowering period. Watering during flowering can easily lower soil temperature and reduce soil air content, affecting root growth and absorption, leading to...
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Technical Guidance on Early Spring Pest and Disease Control for Peach Trees
Peach leaf curl mainly damages leaves, but can also harm young shoots and young fruit. It generally occurs from April to May and happens only once a year. When fruit is affected, it turns red, the diseased part swells, the fuzz falls off, and the surface becomes smooth. For agricultural control, select high-yield, high-quality, disease-resistant varieties. In peach orchards that have entered the fruiting stage, manage the soil and fertilizer well...
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Smart prevention and control of nectarine pests and diseases: new strategies are here
During the growing period of nectarines, the main diseases include bacterial shot hole disease and brown spot shot hole disease, etc. Spray with "Xingao Zhimo" + 70% thiophanate-methyl wettable powder 800-fold solution, 65% zineb wettable powder 500-fold solution. The main pests include aphids, red spider mites, etc., and 10% imidacloprid 3000-fold solution can be used. At the same time, spray Xingao...
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Strawberry Summer Pest and Disease Control Methods and Precautions
Applying Boron and Iron Fertilizer Can Improve Strawberry Quality. Strawberries are currently being marketed in large quantities, but as strawberries grow and fruits are harvested, farmers neglect the application of micronutrient fertilizers, and combined with unreasonable fertilization, this causes a deficiency of trace elements needed for strawberry growth, especially with boron and iron deficiency symptoms being particularly obvious, which has already affected strawberry yield...
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What pesticide is effective for controlling pumpkin mosaic virus disease?
Symptoms: Mainly manifested as uneven chlorophyll distribution, with yellow patches or mottled mosaic of alternating light and dark areas on the leaf surface, sometimes with increased chlorophyll concentration along the leaf veins, forming alternating dark green bands; in severe cases, the leaf surface becomes uneven and bumpy, with the veins wrinkled and deformed. Generally, symptoms on new leaves are more obvious than on old leaves. In severe cases, the stems and vines and terminal leaves become twisted and shrunken....
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What to do when pumpkin plants have few female flowers? Teach you how to increase the fruit-setting rate
In the course of production, the author often hears melon growers report that their pumpkins have neither diseases nor pests, and every plant grows with sturdy vines and fat leaves, but they bloom little, especially with few female flowers, and the "baby melons" all get "killed off in frustration." They ask what causes this and what methods can remedy it. The answer is given below. Pumpkin is a kind of...
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Greenhouse Bean Disease Prevention and Control Methods and Key Technical Points
I. Symptoms of bean rust: It mainly affects the leaves, and in severe cases also affects the petioles and pods. In the early stage of the disease, small pale yellow spots appear on the underside of the leaves, later turning rusty brown, raised and forming small pustule-like blisters, then expanding into uredinia, and after the epidermis ruptures, reddish-brown powder is released. This is the urediniospore. II. Bean powdery mildew...
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Identification and Control Methods of Jujube Rust Disease Explained in Detail
(1) Symptoms: Jujube rust disease only damages the leaves. In the early stage, pale green small spots are scattered on the underside of the leaves, later gradually becoming raised and dark yellow, which are the uredinia of the pathogen. The uredinia are irregular in shape and mostly occur on both sides of the midrib, at the leaf tip and base. After the surface of the lesion ruptures, yellow urediniospores are scattered. On the upper side of the leaf, corresponding to the uredinia, green...
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