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What are the control methods for cherry root gall disease?
The gorgeous cherry blossom is deeply loved by people, but it is prone to a deadly root gall disease. This disease mainly occurs on the roots and on the trunk and side branches of the aboveground part of the cherry tree. In the early stage of the disease, the root crown swells into spherical or hemispherical tumor-like growths; young galls are white, soft in texture, and smooth on the surface. Later the galls gradually enlarge, become hard in texture, brown or dark brown, with a rough, cracked surface, and spread gradually from the root crown to the main root, lateral roots, and even fibrous roots, with each node swelling into tumors of varying sizes, causing the cherry tree to grow slowly or even stop growing, and the whole tree dies within 3 to 5 years
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How to deal with root nodule disease in cherry blossoms? Detailed explanation of prevention and control methods
Last spring, when planting cherry blossom seedlings, the author found that the roots of some plants had nodular growths. Their symptoms were varied in shape and size, brown to dark brown in color, with rough surfaces, and some showed cracked patterns. The affected areas were on the ground or near the root crown at ground level, and at the graft union between the rootstock and the scion. Affected plants showed poor growth and stunting. After identification and diagnosis, the author believes this is root nodule cancer disease, and the seedlings should be treated before planting. The methods are: 1. For suspicious seedlings, soak the roots in a 1% copper sulfate solution for 5 minutes,
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Eight Major Disease Prevention Measures and Key Technical Points for Mushroom Cultivation
In mushroom cultivation, to achieve high and stable yields, you must firmly master the following eight disease prevention measures. 1. Establish a concept of integrated control. The occurrence, and even the epidemic or development, of edible mushroom diseases follows its own patterns of development. On the surface, a disease may appear only at a certain stage of production, but the occurrence of disease requires quite a few conditions. Therefore, disease prevention should start from the source and continue until production is completely finished, and the intermediate steps must not be relaxed in the slightest, so as to thoroughly eliminate the channels through which diseases occur. 2. Selecting excellent virus-free spawn is the guarantee
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What are the control methods for mushroom droplet disease?
Droplet disease is caused by infection with rod-shaped bacteria. Its symptoms are colorless or yellowish-gray droplets of varying sizes produced on the mushroom bodies. Brown or yellow, sometimes green, small spots appear on the caps. This disease was first discovered in France, is rare in the United States and Japan, and has not yet been reported in China. Control measures: keep the inside and outside of the mushroom house clean and hygienic, strengthen ventilation and air exchange, and do not make the mushroom house too humid.
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What are the control methods for mushroom rust spot disease?
Mushroom rust spot disease, also called brown spot disease or bacterial blotch, is caused by Pseudomonas tolaasii, an acidophilic species of the genus Pseudomonas. It spreads through insects, tools, the hands of workers and other carriers. The disease is severe when the casing soil of the mushroom bed has a pH below 5.5, when ventilation is poor, when humidity is too high, and when the mushroom caps remain constantly moist and sticky after watering. Its symptoms are: it generally infects only the epidermal layer of the mushroom cap, causing spots of varying size that are initially yellowish-brown and rust-like in appearance, which later gradually turn brown or black, and sometimes scars with mucus also appear on the caps.
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What are the control methods for mushroom damping-off disease?
Mushroom damping-off disease, also known as wilt disease, is caused by infection with Fusarium oxysporum and Fusarium solani f. sp. phaseoli. It is mainly spread through contaminated soil. The fungus has a strong saprophytic ability and can survive for a long time in soil and diseased plant debris. This disease mainly attacks the mushroom stipe; after infection, the pith of the stipe shrinks and turns brown. Early-infected diseased mushrooms show no difference in appearance from healthy ones, except that the fruiting body becomes shorter and smaller, the cap is darker in color, and the fruiting body stops growing and gradually becomes a "rigid mushroom." In addition, after the fruiting body is infected, the pathogen secretes toxins that destroy mycelial growth or cause small primordia to die, thereby affecting the next flush of mushrooms, which either fails to grow or dies. Pink mold patches can be seen on the surface of the growing medium.
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Common Pest and Disease Control Methods for Greenhouse Mushrooms
The main diseases of mushrooms in greenhouses are: (1) "white rot," also known as brown rot or Mycogone perniciosa disease, which is the most common and most damaging fungal disease among greenhouse mushroom diseases. (2) "ink cap seedlings," also known as wild mushrooms. The main insect pests are mushroom flies, mosquitoes, nematodes, mites, etc. How can these pests and diseases be controlled? Through several years of practice, we have summarized the following experiences for everyone's reference: 1. White rot. Completely eliminating this fungus is not very easy. But we can start from the word "prevention," that is,
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Identification and Control Methods of Diseases in the Seedling Stage of Panax notoginseng
Because Panax notoginseng grows year-round in a shaded and humid environment, diseases such as black spot, round spot, phytophthora blight, rust rot and powdery mildew occur and cause serious damage, with annual losses from various diseases reaching 30%-40%, and in severe cases over 80%. The stage of emergence and leaf growth, when the plant is tender, the root system is underdeveloped and stress resistance is poor, is an important period for initial infection by many pathogens. If spring rain comes early and frequently, the disease spreads rapidly and the damage and losses are severe. Panax notoginseng generally takes 60-75 days from sowing to emergence; strengthening
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Soybean Disease Control Technology: How to Use Junke Duke
Junke Duke (2% Ningnanmycin aqueous solution) is a brand-new biological pesticide successfully developed by the Chengdu Institute of Biology, Chinese Academy of Sciences. It features high efficiency, a broad spectrum, environmental friendliness, and the ability to promote crop growth and improve quality and income. It has a very good control effect on soybean root rot, phytophthora blight and other diseases. I. Control of Soybean Root Rot 1. Symptoms When infected at the seedling stage, brown oval, elongated or irregular lesions form on the diseased plants and the base of the stems, slightly sunken, then developing into large patches surrounding the main stem and even damaging the lateral roots. In the later stage, the roots of diseased plants turn dark brown, the epidermis rots, and the lateral roots and fibrous roots are few or necrotic. The diseased plants are stunted and yellow, and the lower leaves drop early. Except for a few seriously damaged at the seedling stage, diseased plants generally do not die, but they bear few pods and few seeds, affecting yield.
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Method for Treating Curled-Ear Disease in Piglets with Arisaema
After piglets contract curled-ear disease, their body temperature rises, their food intake decreases, and they gradually become emaciated and are prone to becoming stunted pigs. The author used Arisaema (wild taro) to treat this disease, with very good results. The method is: take 100 grams of dried Arisaema (enough for 10 piglets), add 4 kg of water, boil for 20 minutes, remove the residue, divide into 3 meals and mix with feed to feed the piglets; after 3 days the curled-ear phenomenon is eliminated and appetite increases.
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