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Detailed Explanation of Control Methods for Two Major Soybean Diseases
Soybean frogeye leaf spot, also known as spot disease, begins infecting pods from the young pod stage, with the seed-filling stage being the peak period of infection, and severe outbreaks occur in July to August when high temperatures and frequent rain occur. It mainly damages leaves; when severely affected, almost all leaves become covered with lesions, causing premature leaf drop, reducing soybean quality and cutting yields by 20%-30%. This year, the hot and rainy climate in many parts of our province is highly favorable for the disease to occur, and the author reminds soybean farmers that they must not neglect the control of soybean frogeye leaf spot. Chemical control: During the flowering and podding stage of soybean, use 50% carbendazim
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Diagnosis and Control Methods for Acute Onset of Toxoplasmosis in Dogs
From September to December 1997, certain kennels in Jiangsu, Anhui and other places successively experienced outbreaks of a disease characterised by acute death in dogs, sudden acute pulmonary oedema, difficulty breathing, and bloody foam-like fluid flowing from the mouth. Based on necropsy changes, histopathological examination, and toxicological, virological and bacteriological analyses, it was confirmed as an acute outbreak of canine toxoplasmosis. The report is as follows. 1. Incidence: A kennel in Nanjing kept more than 100 German Shepherd Dogs, another kennel kept more than 10 German Shepherd Dogs, and An
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What are the control methods for underground pests of licorice?
The main underground pests at the seedling emergence stage of licorice are mole crickets and the Oriental beetle (He's Oriental chelifer), while at the mature plant stage the main ones are click beetles, scarab beetles, cutworms and darkling beetles, which cause serious damage. After wild licorice is damaged by underground pests, because the wild root head is deep below the soil surface, it is mainly the underground stem that is eaten and damaged, and after damage the adventitious buds can grow rapidly and regenerate, so the whole plant does not die. In contrast, what is mainly eaten and damaged in cultivated licorice is the root, and the plants are young and small with weak recovery ability; accompanied by rot infection, this often leads to the whole plant rotting and dying. In
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Control Methods for the Licorice Flea Beetle (Diorhabda tarsalis)
A leaf-eating pest of the Chrysomelidae family, it is one of the main obstacles to the development of licorice production. It is distributed to varying degrees in the ** Uyghur Autonomous Region, the Hexi region of Gansu Province, and the licorice-producing areas of Liaoning Province, mainly damaging sweet licorice (Glycyrrhiza glabra) and not harming other trees, shrubs, or other herbaceous plants. Throughout the entire growing season, adults are the main agents of damage and consume large amounts of foliage; adults and larvae often overlap in causing damage. In severely affected plots, entire stands of licorice are eaten down to only stems or leaf veins, and from a distance it looks as though the autumn withered and fallen-leaf period has arrived. Try
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Occurrence and Control Methods of Root Rot in the Medicinal Plant Licorice
Symptoms The disease mainly affects the rhizome and roots. After infection, the stems and leaves of the aboveground part gradually turn yellow and wither, and the rhizome becomes yellow-brown to dark brown, sunken and rotten. The pathogen Fusarium sp. is a species of Fusarium, belonging to the Deuteromycotina fungi. For the morphological characteristics of the pathogen, transmission routes, disease conditions, and control methods, see Astragalus Root Rot.
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Symptoms and Control Methods of Brown Spot Disease in the Medicinal Plant Licorice
Licorice, scientific name Glycyrrhiza uralensis Fisch., also known as meicao and micao, is a perennial herbaceous plant in the Fabaceae family. Its roots and rhizomes are used as medicine. It has the effects of harmonizing the middle and relieving urgency, moistening the lungs and detoxifying, and harmonizing various medicines. It is produced in Inner Mongolia, Gansu, Shanxi, Shaanxi, Liaoning, Jilin, Heilongjiang, Hebei and other provinces. The symptoms mainly damage the leaves. The lesions on the leaves are round or irregular, 1-3 mm in size, with a grayish-brown center and brown edges, and grayish-black mold-like substances, namely the pathogen's conidia, grow on both sides.
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What are the green control methods for mushroom pests?
Today green food has become the mainstream of food, but in actual production, especially in autumn, mushroom farmers use large amounts of chemical drugs to control pests, which leaves large amounts of drug residues in mushroom products, planting hidden dangers for consumers' health and also blocking the path of mushroom products into the market, especially the international market. So how should pests be controlled in a "green" way? There are two measures: first, strengthen physical prevention. Measures include: mushroom sheds should be built far from stables and latrines, garbage, manure piles and other places, so that the environment has few or no insects; raw and auxiliary
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The Pathogenesis and Control Methods of Peach Tree Gummosis
Peach tree gummosis is a disease commonly occurring on peach trees today, and its incidence is severe. Especially in peach orchards with extensive management and weakened tree vigor, the rate of affected plants can reach over 90%. This disease severely weakens tree vigor, affects yield and quality, and in severe cases leads to dead branches and dead trees, threatening the production and development of peach trees. It is also one of the most troublesome diseases for fruit growers. I. Causes of peach gummosis. There are two causes of peach gummosis: one is non-infectious pathogens, such as gummosis caused by wounds from mechanical injury, pest and disease damage, frost damage, freeze injury, etc., or gummosis caused by physiological disorders of the tree body resulting from extensive management
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What are the control methods for physiological diseases of mushrooms?
Hard opening of the cap: When mushrooms encounter abnormal weather, the phenomenon of young fruiting bodies opening their caps prematurely is called hard opening of the cap. It generally occurs at temperatures above 18°C, with a temperature difference of about 10°C, or under sudden temperature drops. Insulation work should be done well before sudden temperature changes, and the relative air humidity in the mushroom house should be increased. Malformed mushrooms: The causes of formation are uneven thickness of the casing soil, low fruiting position, and carbon dioxide content in the mushroom house exceeding 0.3%; or they are caused by pesticide damage, diseases, and insect pests. Attention should be paid to the quality of the casing soil and ventilation, preventing harmful gases from entering the mushroom house; attention should be paid to prevention
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Control Methods and Technical Key Points for the Pear Flower Gall Midge
The pear flower gall midge, also known as the flower bud maggot, belongs to the order Diptera, family Cecidomyiidae. The adult lays eggs in flower buds; after the eggs hatch, the larvae (maggots) bore into the flower buds and feed on the stamens. The damaged flower buds cannot open normally and drop off after withering. In recent years, damage by the pear flower gall midge in the areas where it occurs in our county has tended to become severe. In 2006, the average damage rate per flower was 3.25%, and that in severely affected pear orchards was 27.64%; in 2007, the average damage rate per flower was 9.25%, and that in severely affected pear orchards was 45.7%, which has already seriously affected the fruiting rate of pear trees. According to this station's March 9-
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