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A Detailed Guide to Common Pests and Diseases of Plum Trees and Their Control Methods
After the first pinching of the plum tree, pinch the new secondary shoots when they reach 20 cm, and pinch the developing branches when they reach 60-80 cm. If there are many branches, some can be thinned out; if the branches are not too dense, thin as little as possible and control more. Before mid-July, the weeds in the orchard must be completely removed
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Occurrence and Control Methods of Pests and Diseases in Hami Melon Cultivation
I. Bacterial Leaf Spot Symptoms: In the early stage, water-soaked lesions appear near the veins on the underside of leaves. The lesions expand rapidly and merge together, with a yellow halo at the edges. Control method: In the early stage of the disease, spray the leaves with 77% Duoning at 500 times dilution or 3% Zhongshengjunsu at 800 times dilution 2-3 times, once every 4-5 days.
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What are the control methods for Cercospora leaf spot on cantaloupe?
Brown spot is a common disease of cantaloupe, widely distributed, mostly occurring sporadically, with mild symptoms and no impact on production. In severe cases, the diseased plant rate can reach over 80%, causing some leaves to become diseased and necrotic, affecting yield and quality to a certain extent. Symptoms: This disease mostly occurs in the mid-to-late growth stage of cantaloupe
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Control Methods for Root-Knot Nematode Disease in Hami Melon
Root-knot nematode disease is an important disease of Hami melon, occurring and distributed in some areas. It can develop both in protected cultivation and in open fields, with more severe occurrence in autumn. Infection at the seedling stage has a great impact on production. After the disease develops, the rate of diseased plants often reaches more than 60%, significantly affecting Hami melon production. Symptoms mainly
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Control Methods for Fusarium Fruit Rot of Hami Melon
Fusarium fruit rot of Hami melon, also known as white mold disease, is an important disease on Hami melon, mostly occurring during storage and transport, and Hami melon and honeydew melon are susceptible to damage. The symptoms mainly affect the fruit. Initially, round, slightly sunken, light brown lesions appear at the fruit stalk, 10-30mm in size, then the surrounding area becomes
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Control Methods and Technical Key Points for Root Rot Disease in Papaya Seedlings
Papaya root rot disease is also called papaya root rot. Symptoms: The disease mainly affects the root collar and roots, and seedlings during the nursery period and shortly after planting are more susceptible. It is especially likely when the groundwater level in the nursery site and cultivation site is relatively high or poor drainage causes waterlogging, and when the soil is highly clayey. The plant
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Characteristics and Control Methods of Cotton Rhizoctonia Damping-Off
Characteristics of cotton damping-off: After the cotton seedlings emerge, they are damaged; in the early stage, yellow-brown lesions appear at the base near the soil surface, and the lesions gradually expand to surround the entire base, showing obvious constriction; the diseased seedlings wilt, lodge, and die. After the cotyledons are damaged, yellow-brown irregular lesions mostly appear in the middle of the cotyledons
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Control methods for the third-generation cotton bollworm in cotton
1. Manual egg collection and pest elimination. Since most third-generation cotton bollworms are found in the flowers and bolls of insect-resistant cotton, for insect-resistant cotton fields, withered flowers should be removed promptly and pests eliminated manually. For other cotton fields, manual egg collection and pest elimination can be carried out along with pruning and removal of side branches, and the remaining branches and withered leaves should be taken out of the field
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Control Methods for Cotton Red Leaf and Stem Blight
Cotton red leaf and stem blight is a physiological disease and one of the main diseases of cotton in the middle and late stages. Over the years, it has occurred severely in sandy loam soil and poor cotton fields in our county. In drought years, especially after a long drought followed by rain or during continuous overcast and rainy weather, red leaf and stem blight breaks out, and cotton plants dry up and die.
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Control Methods for Cotton Thrips When Growing Cotton
Cotton thrips, also known as tobacco thrips or onion thrips, damages not only cotton but also tobacco, onion, garlic, cucurbits, potato, tomato, Chinese cabbage and many other crops. Damage symptoms: adults and nymphs mostly gather on the tender tips and undersides of cotton leaves to suck sap. After cotton seedlings are damaged,
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