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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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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 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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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 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 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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Detailed Explanation of Silkworm Disease Prevention and Control Methods and Technical Points
Silkworm diseases originally occurred mainly as midgut-type nuclear polyhedrosis and empty-headed flacherie, but at present, due to differences in rearing time and climatic conditions, silkworm diseases such as blood-type nuclear polyhedrosis and muscardine are predominant. 1. Blood-type nuclear polyhedrosis (commonly known as climbing silkworm, granny silkworm). The virus of blood-type nuclear polyhedrosis parasitizes in the blood of diseased silkworms. The blood of healthy silkworms is colorless and transparent, while the blood of diseased silkworms is milky white, so diseased silkworms are also called granny silkworms. Once a silkworm develops the disease, as the condition worsens, the diseased silkworm drags milky white purulent fluid and crawls frantically, so
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Symptom Identification and Control Methods for Azalea Leaf Gall
Symptoms: Azalea leaf gall, also known as cookie disease. The young tissues of azaleas can all be affected, mainly damaging flower buds, young leaves and new shoots. On the upper surface of the leaves, initially pale yellow semi-transparent round spots appear, later turning yellow and sunken; the underside of the leaves is pale red, thickened and swollen, subsequently raised into galls, with a thick grayish-white powdery layer on the gall surface, like a cookie, and the leaves wither, yellow and fall early. In severe cases, the petiole lesions merge into patches, deformed and thickened. When young shoots are affected, fleshy lotus-like leaves or tumor-like leaves are produced at the tips, later shrinking into sac-like forms. After the petals are infected, they become abnormally thickened, forming irregular galls.
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Identification and Control Methods for the Azalea Lace Bug
The azalea lace bug, also called the azalea lace bug (Stephanitis pyrioides), and "little stink bug." Adults are about 3.5 mm long, dark brown, with wings covered in a network of veins; the forewings are slightly rectangular, and at rest the dark brown markings on the wings form an "X" shape. Nymphs resemble the adults but are tender and small, wingless, and about 2 mm long. Eggs are 0.6 mm long, oval, milky white, laid along the midrib and larger leaf veins, pale green when first laid and later turning pale yellow. There are 3 to 4 generations per year. Adults overwinter from mid to late October in bark and soil crevices and other such places, and the following year
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Identification and Control Methods of Common Fungal Diseases of Azaleas
Among the common azalea diseases, the main fungal diseases include azalea powdery mildew, rust, gray leaf spot, blight, and leaf gall, among others. These diseases mainly affect the leaves, young branches, buds and floral organs of azaleas, and when not controlled in time they often cause great losses. (1) The main differences among the following diseases are: 1. Azalea powdery mildew: generally occurs in the middle and late stages of growth, initially appearing as chlorotic spots, then growing a white mycelial layer and producing large amounts of powdery conidial layers, turning grayish brown in the later stage 2. Azalea rust: in the early stage, transparent golden or
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