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What are the pest control methods for the pear lace bug?
This insect, also known as the army-matching bug, gathers as adults and nymphs on the undersides of leaves to pierce and suck sap, causing the damaged leaves to be densely covered with small white spots, or even to turn entirely pale, leading to early defoliation, affecting tree development and flower bud formation, and in severe cases causing the tree to bloom twice in the same autumn, damaging the following year's yield. This insect has a relatively mixed diet and can harm many fruit trees such as pear, apple, Chinese pearleaf crabapple, crabapple, peach, cherry, hawthorn, and jujube. [Occurrence pattern] It has 4-5 generations per year. Overwintering adults begin activity and lay eggs in mid-April, with an egg period of 10-15 days. The
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Harm and Control Methods of the White Peach Scale
Distribution area: Morphological characteristics: The female adult is orange-yellow, broadly oval, with a body length of 1-1.3 mm; the body surface is covered by a scale cover, which is 2-2.5 mm long, grayish white, nearly circular, convex on the back, with the shell point yellowish brown. The male adult is 0.65-0.7 mm long, orange, with grayish white wings. The male scale cover is about 1 mm long, grayish white, long cylindrical, with 3 ridges on the back; the shell point is orange-yellow and located at the front end. Eggs are oval, orange. Nymphs are flat and round, orange.
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How to prevent and control rice red blight? These 4 methods work fast
After good early growth, rice enters the reproductive growth stage of the middle and late periods. Strengthening field management at this stage has a great relationship with the yield and quality of rice. So, how can field management in the middle and late stages of rice growth be done well? 1. Timely field drying. Field drying should generally be carried out when rice is not sensitive to water reaction, that is, it is more suitable from the late tillering stage to the early young panicle differentiation stage. The following principles should be followed during operation: fields with sufficient and vigorous seedlings should be dried appropriately earlier; where the mud foot is deep and there is excessive growth, drying should be heavier, otherwise lighter; fields with poor water retention should not be dried heavily; saline-alkali paddy fields generally cannot be dried.
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Comprehensive control methods for soybean root-knot nematode disease
Soybean root-knot nematode disease, also known as "Fire Dragon Seedling," is a whole-plant disease caused by nematodes attacking soybean roots, leading to bacterial infection and disease. Affected plants grow slowly, with short, small, and yellowing stems and leaves, delayed flowering, few and small pods, and shriveled seeds; in severe cases, no pods form, or even the entire plant dies. Soybean root-knot nematode disease spreads rapidly, and the pathogenic nematodes can survive in the soil for a long time. Once the disease occurs, it is very difficult to eradicate completely, so comprehensive control measures must be adopted: 1. Select and sow disease-resistant varieties; 2. Control the source of infection
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Integrated Control Methods for Soybean "Fire Dragon Seedling"
In Wudalianchi City, Heilongjiang Province, the soybean area is 950,000 mu, with a continuous cropping area of 930,000 mu, accounting for 97.8% of the soybean sown area. Through investigation, the area affected by soybean "Fire Dragon Seedling" is around 96.5%, with most yield reductions between 20 and 50%, and some plots reaching total crop failure. It can be said that due to the influence of the market economy, the continuous cropping area of soybean cannot be controlled, but through integrated control, the occurrence of soybean "Fire Dragon Seedling" can be reduced, enabling soybean to achieve high and stable yields. The integrated control techniques for soybean "Fire Dragon Seedling" are as follows:
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How to prevent and control frost damage to young and newly planted tea trees? These seven methods must be mastered
1. Apply winter manure. Young and newly planted tea trees have relatively weak cold resistance, so before overwintering, a heavy application of winter manure should be combined with earthing up and mounding around the base. The fertilizer should mainly be farmyard manure, stable manure and biogas residue, which have a certain heat-preserving effect, along with a certain amount of cake fertilizer, superphosphate and potassium sulfate fertilizer. Winter manure can not only preserve heat and prevent freezing and enhance the tea trees' freeze resistance, but also lay a good foundation for the tea trees' growth the following year. 2. Earth up and mound around the base. Preventing the root crown from freezing is a key measure for protecting young and newly planted tea trees from frost. Therefore, before young and newly planted tea trees overwinter, they should
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Control Methods for Green Mold Disease in Lingzhi (Reishi Mushroom)
Green mold (Trichoderma viride Pers. ex Fr.) belongs to the class Hyphomycetes, order Moniliales, family Moniliaceae, genus Trichoderma, under the subdivision Deuteromycotina. 1. Morphological characteristics: The hyphae are slender, colorless, septate, and much branched. Conidiophores arise from lateral branches of the hyphae, opposite or alternate, generally with 2-3 branchings; the sterigmata bearing conidia are flask-shaped or cone-shaped. Conidia are mostly spherical, with the spore wall bearing small warty protuberances, green or blue-green. On PDA medium, the colony is initially white and cottony, later becoming dark
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Pest Control Methods and Key Technical Points for Panax notoginseng Seedling Fields
When aphids and scale insects cause damage, spray 50% phoxim emulsifiable concentrate at 1000 times dilution or 40% dimethoate emulsion at 1000 times dilution for control. In plots with a large number of white grubs and cutworms, apply 50-75 g of 90% trichlorfon crystals per mu mixed with 20 kg of fine soil and broadcast, or mix with 50 kg of chopped fresh vegetable leaves and broadcast in the evening. For rodents damaging Panax notoginseng gardens, based on their habit of hiding by day and coming out at night, block their burrows during the day and place rat traps, rat cages
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Detailed Explanation of Prevention and Control Methods and Key Technical Points for Panax notoginseng Blight
Blight, also known as "leaf-drooping rot," begins to occur from April to May, and becomes severe from July to August. After being affected, dark green irregular lesions appear on the leaves or petioles, and the lesion color then deepens. The affected parts become soft, and the leaves look as if they have been scalded with boiling water, appearing semi-transparent, and later dry up or droop and stick to the base of the stems. Prevention and control methods: First, after harvesting the fruit, cut off the aboveground parts, clean the field, and spray the bed surface with 1-2 degrees Baume lime sulfur mixture for disinfection. Second, before the disease occurs, spray 1:1:200 Bordeaux mixture or 50% carbendazim 1000x solution, once every 7 days, for
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What are the control methods for round spot disease of Panax notoginseng?
It can damage all parts of the plant. In the early stage of leaf disease, yellow spots appear on the underside of the leaves. In humid weather or during continuous rainy days, they rapidly expand into transparent round spots. When the weather is dry after the disease occurs, the lesions are relatively large, round and brown, with obvious concentric rings. When the stems are affected, the damaged parts are chestnut-colored, and the diseased area has a grayish-white mold layer, which can cause bud rot and stem base rot. Control methods: First, during the epidemic season of round spot disease, open the ventilation doors of the Panax notoginseng garden to increase air flow and reduce humidity inside the garden. Second, adjust the light intensity for Panax notoginseng to avoid excessively strong light, which is conducive to the spread of the disease.
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