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What are the control methods for the peach globular scale?
In recent years, the peach globular scale has occurred severely in the nectarine orchards of our town. In mild cases, tree vigor weakened and yields declined; in severe cases, there was total crop loss and even tree death. To address this, we carried out two consecutive years of pesticide screening and control, with very good results. We summarize them as follows: 1. Strengthen comprehensive fertilizer and water management measures, keep the trees vigorous, ensure ventilation and light penetration, and pay attention to protecting natural enemies. 2. Before bud break, in early to mid-March, when overwintering nymphs emerge from dormancy, their body surface wax is still sparse, so timely control can achieve good results. Choose 5-degree lime sulfur
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What are the control methods for the jujube inchworm pest?
This insect, also known as the jujube looper, occurs commonly and is widely distributed across all jujube-producing regions of China, where its larvae feed on tender buds, flower buds and leaves. In years of severe outbreak, it can strip the jujube buds and leaves completely bare, resulting not only in no yield that year but also affecting fruit set the following year. [Occurrence pattern] This insect has 1 generation per year. It overwinters as pupae in the soil layer near the tree trunk. The following March, adults begin to emerge from the soil and eclose, with April being the peak period of eclosion and May the final period, the entire eclosion period lasting as long as about 60 days. The egg stage lasts 10-20 days, and hatching begins in mid-April,
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What are the control methods for jujube fruit shrinkage disease?
The occurrence of jujube fruit shrinkage disease is positively correlated with the density of piercing-sucking insects; when atmospheric humidity is high, especially with intermittent rainfall or successive cloudy days, the disease often becomes epidemic. Control methods: (1) If the disease index was relatively high the previous year, first clean up fallen leaves and fallen fruit in the jujube orchard and dispose of them in a centralized manner to cut off the source of transmission. (2) Strengthen fertilizer and water management in the jujube orchard to improve tree resistance; for older trees, scrape off and burn old bark before jujube bud break, and spray the whole tree once with lime sulfur mixture. (3) Chemical control: use Fungus No. 1
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What are the control methods for leaf diseases of hot peppers?
The main leaf diseases of hot peppers include anthracnose, brown spot, bacterial leaf spot, and gray leaf spot. These diseases can occur alone or together, among which bacterial leaf spot is more severe, often causing early leaf drop or even complete defoliation, greatly affecting the yield and quality of hot peppers. It is currently the rainy season, and the high-temperature, high-humidity climate conditions favor the occurrence of leaf diseases in hot peppers. Control measures: 1. Agricultural measures: After rain or irrigation, carry out timely intertillage to reduce soil moisture. 2. Use 77% Kocide at 500 times dilution (used alone
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Occurrence and Control Methods of Goji Gall Mite Disease
In mid-to-late August 2002, in the goji berry production area on the border between Julu and Longyao, goji gall mite disease broke out severely, causing great losses to goji berry growers. Damage symptoms: most obvious on the leaves, with densely packed yellow-green nearly circular raised dots on the damaged parts, and the leaves are distorted, similar to a viral disease, with plant growth severely stunted; the leaves and tender stems are inedible, and the fruits are deformed, reducing both yield and quality. Using a blade to cut open the small bumps on the leaves and taking out the adult mites from inside, under a microscope the adult mites are long conical and orange-yellow. Through
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What are the control methods for the wolfberry gall mite?
The wolfberry gall mite belongs to the family Eriophyidae. It damages wolfberry leaves, tender shoots, petals, flower buds and young fruit, and the damaged parts form purple or yellow diseased galls. The wolfberry gall mite overwinters as mature adult mites inside the scales of wolfberry winter buds or in cracks in the bark of branches. When leaves unfold in April of the following year, the adult mites migrate to the new leaves on old branches to lay eggs; after hatching, the nymphs invade the plant tissues and cause galls. In mid-to-late May, the gall mites crawl from the galls onto new shoots to cause damage, continuing until late June, forming the first peak period of reproduction. By mid-August, when the autumn shoots grow, the gall mites move again to the new shoots to cause damage
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What are the control methods for goji root rot?
Goji root rot occurs commonly and causes serious damage; plants killed by the disease account for 3%-5% each year, causing great losses to goji production. According to research by Lu Zhankui and others at the Ningxia Academy of Agriculture and Forestry Sciences, root rot symptoms fall into the following two types: (1) Root decay type. Roots or the root crown show varying degrees of decay and peeling, the stem vascular bundles turn brown, and in damp conditions a white or pink mold layer grows on the diseased area. It can further be divided into two types: small-leaf type and yellowing type. ① Small-leaf type: leaf emergence in spring is delayed, leaves are small, branches are stunted, flower buds and
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What are the common diseases of the tea tree mushroom? Detailed explanation of prevention and control methods
The tea tree mushroom is a rare mushroom variety that has been very popular in domestic and international markets in recent years, but because pest and disease problems occur relatively often, growers often fail to accurately identify the symptoms and pathogens and blindly use chemical pesticides, resulting in damage to the mushroom bodies and poor cultivation returns. The symptoms, pathogens and control measures of common infectious diseases are introduced below: 1. Brown rot disease The affected fruiting bodies stop growing, and the caps and stipes rot and give off a foul odor. The pathogen is Mycogone perniciosa, which mainly spreads and causes disease through contaminated water or hands, tools, etc. that have come into contact with diseased mushrooms
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Control Methods and Technical Key Points for Diseases of Belgian Azalea
Control of Common Diseases and Pests The physiological disorders among the common diseases of Belgian azalea are mainly caused by differences in water quality between production and sales areas, unsuitable temperatures during transport, or insufficient light when placed indoors at home. The control method is mainly to adjust light, the pH of irrigation water, and temperature according to the physiological habits of Belgian azalea. Common diseases of a pathological nature include: for gray mold, thinning seedlings, reducing humidity, and preserving warmth are the fundamental control measures. For chemical control, iprodione (1500x dilution), mancozeb (500x dilution), procymidone (15
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What are the control methods for the yellow nettle caterpillar on magnolia?
(1) In summer (1-generation areas) and in winter and spring (1-2 generation areas), in combination with pruning and other field operations, cut off or pick off the cocoons. (2) When young larvae are clustered and causing damage, cut off the infested leaves to kill the larvae. (3) Spray 20% diflubenzuron suspending agent or 20% chlorbenzuron No. 3 suspending agent at the young larval stage, or spray Bt emulsion, Bacillus thuringiensis, etc. throughout the larval stage. (4) When necessary, spray insecticides such as fenpropathrin, phoxim, fenitrothion, etc. during the larval stage.
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