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How to prevent and control rose rust? These methods you need to master
I. Symptoms Rose rust is a major disease of roses, common throughout southwest China, and more severe in areas with warm weather year-round and rainy, foggy winters. According to the author's surveys over many years, the incidence rate in some areas of our province is as high as 80%. White-flowered and purple-flowered roses are both infected, causing leaf drop, affecting growth and flowering, and it also...
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How to prevent and control rust disease when growing beans?
How to prevent and control rust disease when growing beans? Please give an introduction. Rust disease is very prone to occur in the middle and late stages of kidney bean growth, and can harm leaves, stems and vines, and pods. When it harms leaves, the diseased leaves have yellow-green raised spots, which quickly turn yellow. After the epidermis ruptures, pinkish substances are released, and black scab-like spots may also appear later. Some leaves have...
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What are the methods for controlling cowpea rust in autumn?
How do you control rust when growing cowpeas in autumn? Here is an introduction to the control methods. The growing environment for autumn-planted cowpeas has high temperatures and relatively high rainfall, and in addition the inoculum (urediniospores) left behind in the field from spring-planted cowpeas is abundant. Therefore, autumn-planted cowpeas are prone to rust, and farmers should carry out integrated control early. 1. Main symptoms: the whole...
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Control Methods for Black Spot Disease and Rust Spot Disease in Enoki Mushrooms
What to do when enoki mushrooms develop black spot disease and rust spot disease? Please advise. 1. Black spot disease: a bacterial disease caused by Pseudomonas bacteria. After infection, oval brown or dark brown spots appear on the caps of enoki mushrooms, initially needle-tip sized, expanding to 2-4 mm in diameter, with neat edges, and sometimes the caps crack. Control methods...
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How to prevent and control Angelica rust? Detailed explanation of control methods
How to control cutworms in Angelica? Please advise. Cutworms, also known as "soil silkworms" or "black soil silkworms", belong to the order Lepidoptera, family Noctuidae. The main cutworms affecting Angelica are the black cutworm and the yellow cutworm, and their damage conditions and control measures are the same. 1. Damage situation: The larvae damage Angelica seedlings, hiding by day and emerging at night; in the young larval stage they mostly feed on tender leaves...
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How to control papaya rust in papaya tree cultivation?
How to control papaya rust? What harm does papaya rust cause? What methods can control papaya rust? Please provide guidance. The harm of papaya rust: after the leaves are affected, shiny orange-yellow fine spots appear, gradually expanding into round spots about 5 mm in size, and producing yellow slime. The underside of the leaf is raised. And produces gray-yellow...
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What is honeysuckle rust? A detailed guide to honeysuckle cultivation techniques
What is honeysuckle rust? What harm does rust do to honeysuckle? Friends with experience are invited to explain the harm rust does to honeysuckle: after honeysuckle is affected by rust disease, tea-brown or dark-brown small spots appear on the underside of the leaves; some leaves also develop nearly round lesions on the upper surface, with 1 small pustule in the center, and in severe cases the leaves can...
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How to control barley leaf rust? A detailed guide to barley cultivation and control methods
How to control barley leaf rust? What causes barley leaf rust? We ask our readers to help explain the causes of barley leaf rust: The barley leaf rust pathogen overwinters as urediniospores on volunteer barley seedlings, infects autumn seedlings after sowing and emergence, and overwinters on the seedlings as mycelium or uredinia. In spring...
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What are the control methods for white rust in Achyranthes bidentata?
How do you control white rust in Achyranthes bidentata? Please explain the control methods. White rust in Achyranthes bidentata is mainly caused by a fungal infection of the plant. The symptoms are that all aboveground parts of the plant can be affected, and when leaves are damaged, pale yellow-green patches appear on the leaf surface, with blister-like raised spots developing on the corresponding underside, 1-2 mm in diameter. After the epidermis ruptures, a white, glossy, sticky, powdery substance is released...
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What is rose rust and what are the control methods
What is rose rust? How to prevent and control it, please provide an introduction to the methods. Rose rust mainly damages the buds, leaves, young shoots, petioles, receptacles, pedicels and other parts of roses. It mainly occurs on buds and leaves. During the spring germination period, the base of diseased buds swells, and a large amount of orange-red powdery material grows within 1~3 layers of scales, like a small...
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