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How to treat grape water rot? Detailed control methods
Based on your description, it is likely grape white rot, one of the most important grape diseases, especially in rainy years when it often occurs together with anthracnose, causing great damage. Grape white rot can harm clusters, canes and leaves. After the cluster and rachis are infected, they become light brown and water-soaked rot, and the whole cluster or part of the small clusters...
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How to prevent and control Chinese cabbage virus disease? These medication guidelines must be remembered
Agricultural control 1. Choose disease-resistant varieties and avoid continuous cropping. Planting experience has proven that varieties with green stems and green leaves are generally relatively resistant to disease. Do not plant near other cruciferous crops and do not practice continuous cropping with cruciferous crops, which can effectively avoid the occurrence and spread of the disease; 2. Sow at the appropriate time but later, and cover to lower the temperature. According to planting experience, appropriately...
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What medication works well to prevent and control clubroot in napa cabbage
Clubroot in napa cabbage refers to the formation of tumors of varying sizes and shapes on the roots of the cabbage; the tumors are smooth in the early stage and become cracked and rough later, and after cracking they are prone to infection by pathogens. Clubroot not only harms cabbage but also harms many crops in the cruciferous family. Clubroot can affect napa cabbage at the seedling stage, and in severe cases the plants die. This disease...
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What Fungicide Works Best for Controlling Chinese Cabbage Root Rot
Causes of the Disease: Chinese cabbage downy mildew is a fungal disease that mainly affects the leaves, though the stems and flowers can also be affected. After infection, water-soaked chlorotic spots appear on the upper surface of the leaves, later turning yellowish-brown. As the lesions expand, they are often restricted by the leaf veins and become angular in shape. When the weather is humid, a sparse white mold layer forms on the underside of the leaves, and the disease...
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Symptom Identification and Control Methods of Sorghum Black Bundle Disease
Symptoms Sorghum black bundle disease is a vascular bundle disease, also known as tracheomycotic blackening disease. When symptoms appear on leaves, brown streaks form on the leaf veins, mostly presenting as large necrotic spots along one or both sides of the main vein, causing the leaves and leaf sheaths to turn purple or brown; in severe cases the leaves dry up, the stalks become slightly thicker, and branching occurs on the upper part of diseased plants. Cross-sectioning the diseased stalk...
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Symptom Identification and Control Methods for Sorghum Downy Mildew
Sorghum seedling blight - Symptoms: The disease can occur when sorghum grows to 4-5 leaves. It starts from the lower leaves and then spreads upward. Infected leaves develop purplish-red streaks that gradually merge, causing the leaves to gradually die from the tip, and the seeds turn very brown. Sorghum seedling blight - Pathogen: Known as Fusarium moniliforme, a fungus belonging to the subphylum Deuteromycotina. On PDA medium...
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Symptom Identification and Control Methods for Sorghum Head Smut
Symptoms The diseased plants are shorter than healthy plants. In the early stage of the disease, the ear sheath of the diseased ear is very tight, the lower part is swollen, and the flag leaf is upright; when peeled open, a white rod-shaped structure can be seen inside, namely the smut gall. The smut gall inside the sheath is initially small and finger-shaped, gradually grows larger, and later the middle part swells into a cylindrical shape and becomes relatively hard. During the development of the smut gall, the internal tissue changes from white to black, then...
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Occurrence Patterns and Control Methods of Sorghum Head Smut
As the sorghum planting area continues to expand and the planting years lengthen, the damage caused by sorghum head smut is becoming increasingly serious, directly affecting the development of sorghum production. I. Degree of damage: In the early 1990s, sorghum head smut occurred only sporadically in a few local areas of the county. By 2000, the affected area in individual townships was about 43 hectares, with a diseased plant rate of 15%, while other planting areas had only mild occurrence. According to a 2004 survey, the affected area in the county was 800 hectares, accounting for 34% of the total sorghum sown area, with an average diseased plant rate of 20.5% in affected fields; in 2005, the affected area in the county was 1333 hectares, accounting for 67% of the total sorghum sown area, with an average diseased plant rate of 31.2% in affected fields. In the sorghum planting area of the Second Brigade of Biesituobie Township, the diseased plant rate reached 70.5%, with a severity of 70%.
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Symptoms and Control Methods of Sorghum Anthracnose
Symptoms This disease is an important disease of sorghum and occurs in all sorghum-producing areas. It can infect plants from the seedling stage to the mature plant stage. Infection at the seedling stage damages the leaves, causing leaf blight and resulting in dead sorghum seedlings. Leaf lesions are spindle-shaped, reddish-brown in the center with purplish-red margins, and dense small black dots appear on the lesions, which are the pathogen's acervuli. Anthracnose...
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Symptoms and Control Methods of Sorghum Banded Leaf and Sheath Blight
Symptoms: This disease occurs commonly in northern China and Taiwan, China, and is more severe in hybrid sorghum; it also occurs in central and southwestern China. It mainly affects the leaf sheath, but can also affect the leaves. After infection, water-soaked lesions first appear on the stem near the ground, followed by lesions on the leaf sheath with alternating purplish-red and grayish-white bands. In the late growth stage or under rainy and humid weather...
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