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How to prevent and control green mold in oyster mushrooms? A detailed guide to integrated control techniques
1. The tall-stemmed mushroom has a small cap and poor differentiation, with a relatively long stem. The cause is that during the primordium formation and differentiation stage, the mushroom house is short of oxygen and light, while the temperature is on the high side, which affects the normal differentiation and development of the cap. Control method: increase ventilation and adjust light and temperature. 2. The tumor-capped mushroom's cap appearance is mainly at the edge...
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What are the control methods for the cotton stem borer (Zeuzera coffeae) in cotton?
What diseases occur during the boll stage of cotton? How should they be controlled? How are cotton boll-stage diseases controlled? The occurrence of cotton boll-stage diseases is closely related to climate, variety, insect pests, and cultivation techniques during the growth period. Therefore, the control of cotton boll-stage diseases should adopt comprehensive control measures focusing on cultivation management, combined with chemical protection. (...
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What are the control methods for crown gall disease in chrysanthemums?
Answer content: Key points of chrysanthemum cultivation and management techniques 1. Site selection: Chrysanthemums like moisture and fear drought, and cannot tolerate waterlogging. If soaked by heavy rain for 48 hours after planting, they will all die. Therefore, choose land that is fertile, convenient for drainage and irrigation, and has sufficient light. If converting rice fields for planting, reinforce the main surrounding embankment and ensure sufficient drainage and irrigation capacity, so as to avoid...
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How to treat chrysanthemum black spot? Detailed control techniques
I. Main symptoms: They occur on the leaves and can spread to the petioles in severe cases. In the early stage, the spots are grayish-black dots surrounded by a faded green halo; after expanding, the spots become nearly round to irregular, grayish-brown inside with dark brown edges and yellow patches around them; in the later stage, the center of the spot turns yellowish-brown and dry, and under humid conditions...
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How to prevent and control verticillium wilt in chrysanthemums? A detailed guide to practical methods
I. Symptoms of damage: Verticillium wilt of chrysanthemum occurs commonly; infected plants have yellow, weak leaves, and the yellowing is initially limited to a few lower leaves, then gradually increases, and old leaves turn brown and die. Flowers are small or fail to bloom. II. Morphological characteristics of the pathogen: The pathogen is Verticillium dahliae Kleb., a fungus of the class Deuteromycetes. Mycelium...
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What are the control methods for sclerotinia rot of chrysanthemum?
1. Damage symptoms: Water-soaked lesions first appear on the middle and lower parts of the stem, later turning grayish white; under moist conditions, the diseased part becomes soft and rots, with a white mold layer on the surface; in the later stage, the cortex of the diseased stem rots into a shredded, split appearance, with mouse-dropping-shaped black sclerotia formed inside, and sometimes sclerotia also form on the stem surface. 2. Morphological characteristics of the pathogen: The pathogen is a fungus of the phylum Ascomycota...
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What are the control methods for chrysanthemum wilt?
I. Damage symptoms: When the disease first occurs, the leaf color becomes lighter and turns yellow, the leaves wilt and droop, and the stem base also turns light brown. A cross-section of the stem base shows the vascular bundles turning brown; the vascular bundles of the upward-extending branches gradually turn light brown as well, and the downward extension causes the outer skin of the roots to necrose or turn black and rot, with some stem bases splitting open. When humidity is high, it produces...
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What to Do When Chrysanthemums Get Bacterial Wilt? Introduction to Prevention and Control Methods
1. Damage Symptoms: When the whole plant is infected, the above-ground leaves wilt; after lasting 3-5 days, the lower leaves turn yellow, the stem nodes near the ground appear brown, the fleshy part of the tuberous roots rots, and the epidermis and fleshy roots also turn brown, later becoming lead-white. When the diseased stem is cut crosswise, the vascular bundles turn brown, and when squeezed by hand or kept under moisture, a dirty-white bacterial ooze exudes; the diseased tuberous roots can also discharge bacterial ooze from cracks.
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What are the control methods for longan sooty mold?
What methods are there to control longan sooty mold? Please advise on the methods. Control methods for longan sooty mold: 1. Strengthen orchard management. Prune moderately to improve ventilation and light penetration and reduce humidity. Promptly control pests such as the white moth planthopper, longan lanternfly, and scale insects to prevent pest infestations from triggering sooty mold. 2. Chemical control. In the early stage of the disease, use...
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In the process of oyster mushroom cultivation, the seed production stage must be strictly controlled.
Rust-colored or dark brown spots appearing on the caps and stipes of oyster mushrooms are called oyster mushroom rust spot disease. This disease is a bacterial disease that readily occurs during the fruiting body growth stage of oyster mushrooms. The pathogen causing this disease is a species of Pseudomonas bacterium that is extremely widely distributed in nature. In the early stage of the disease, the spots are only the size of a needle tip, and the color...
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