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How to prevent and control weevil infestation when growing mangoes?
1. The mango leaf-cutting weevil is widely distributed. Adults feed on young mango leaves, causing the leaves to dry up; or the female lays eggs on young leaves and bites the young leaves off at the base, affecting plant growth. Control methods: ① During the growth period of young shoots, pick up the bitten
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Control Methods for Anthracnose in Mango Cultivation
1. Damage symptoms: It mainly damages mango flowers, fruits and young shoots. After young leaves are infected, many round brown spots appear, surrounded by yellow halos, and gradually expand into round, polygonal or irregular brown lesions, which later rupture and perforate. The wounds on leaves and young fruits caused by gall midges, leafhoppers and other pests are also easily infected by this disease.
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What are the control methods for calcium deficiency in apple trees?
Symptoms of calcium deficiency in apple trees: bitter pit formed in the early stage, with a spongy texture under the skin but without rotting. The red spots and black spots formed before harvest should be distinguished as to whether they are an infectious disease or a physiological disorder. The red spots and black spots formed by infectious diseases rapidly expand and penetrate deep into the flesh and
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Key Technical Points for the Prevention and Control of Apple Pests and Diseases in the Mid-to-Late Stage
The young fruit stage is the peak infection period of early defoliation disease, the initial stage of branch ring rot, and also the peak damage period of aphids, leaf mites and scale insects. Therefore, doing a good job in the prevention and control of apple pests and diseases during the young fruit stage is crucial for strengthening tree vigor, improving fruit quality and achieving increased
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Key Field Management Techniques for Fig Cultivation
(1) Intertillage and weed control: In young orchards, intertillage and weed control should be carried out once each in spring, summer and winter, and winter intertillage should be combined with earthing up to prevent freezing. In mature orchards, intertillage should be done during the dormant period, and in summer the ground should be covered with grass, which can both suppress weed growth and prevent drought and preserve soil moisture. If weeds still grow, they can
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Control Methods for Phytophthora Disease in Fig Cultivation
Fig Phytophthora disease is an important disease of figs in suburban areas in recent years, occurring commonly and causing serious damage. In years when the disease is epidemic, 80%-90% of the fruit can be affected and rot, and large numbers of branches and leaves wither. [Symptoms of damage] The disease mainly damages fruit, new shoots and leaves, and can also infect buds.
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How to Prevent and Control Fig Anthracnose? A Detailed Guide to Practical Methods
This disease is an important disease on fig fruit, and because of its damage, large numbers of fruits often rot. [Damage symptoms] It mainly damages fruit, and can also infect branches. After the fruit is infected, round, slightly sunken, brown patches appear on the fruit surface, and then concentric
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What are the causes of melon fruit abortion and the control methods?
1. Causes of fruit abortion 1. Temperature too high or too low. When the temperature is too high, photosynthetic accumulation is low and respiration consumption is high, which easily causes the vines to grow excessively, leading to malnutrition and fruit abortion; when the temperature is too low, the root absorption capacity weakens, affecting photosynthesis and leading to nutrient deficiency and fruit abortion. 2. Soil too dry
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Methods and Technical Key Points for Controlling Powdery Mildew in Melons
1. Select disease-resistant varieties. There are obvious differences in disease resistance among different melon varieties, so selecting disease-resistant varieties is the key to controlling the degree of disease occurrence. 2. Clean the field. After the crop is harvested, weeds and residues should be removed promptly. During the melon growing period, weed promptly, remove ⟦4 <p>1. Select disease-resistant varieties. There are obvious differences in disease resistance among different melon varieties, so selecting disease-resistant varieties is the key to controlling the degree of disease occurrence.</p><p></p><p>2. Clean the field. After the crop is harvested, weeds and residues should be removed promptly. During the melon growing period, weed promptly, remove diseased leaves, and take weeds, residues, and diseased leaves outside the field to be burned in a centralized manner.</p><p>3. Scientific management to enhance plant disease resistance. Apply sufficient basal fertilizer, especially heavily apply decomposed organic fertilizer, and plow deeply and harrow finely; prevent excessive vegetative growth and premature senescence of plants, organize branches and vines promptly, and strengthen ventilation and light penetration; during the mid-growth stage, pay attention to topdressing phosphorus and potassium fertilizers, and use foliar fertilizer well to cultivate strong branches and vines and enhance the disease resistance of the population.</p><p>4. Scientific irrigation. Create environmental conditions suitable for melon growth but unfavorable for the occurrence and development of powdery mildew. Irrigation should follow 4 principles: do not water on cloudy days but water on sunny days, do not water in the afternoon but water in the morning, do not water heavily but water lightly, do not water on the surface but water under the surface (that is, subsurface irrigation under film).</p><p>5. Chemical control. Use 15% triadimefon wettable powder at 1000-1500 times dilution, or 40% Daconil suspension concentrate at 800-1000 times dilution, or 40% Fuxing emulsifiable concentrate at 6000 times dilution, or 10% Shigao water-dispersible granules at 2000 times dilution, or 30% Tefuling wettable powder at 5000 times dilution, or 50% thiophanate-methyl wettable powder at 1000 times dilution, etc., alternating sprays for control, spraying once every 7-10 days, for 2-3 consecutive sprays. Medication is prohibited 7 days before melon harvest to allow safe harvesting.</p>
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How to prevent and control fruit cracking in pomegranates during the ripening period? A detailed guide to practical methods
1. Plant crack-resistant varieties This is the fundamental measure for preventing fruit cracking. Priority should be given to this measure when developing pomegranates. Among the excellent pomegranate varieties, Heyin Tonghongdeng pomegranate, Heyin Yueliangbai pomegranate, Heyin Hongdeng pomegranate, Tunisian soft-seed pomegranate and Chaodazi pomegranate are all
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