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What are the control methods for the rice leaf roller?
Rice leaf rolling is caused by the rice skipper and the rice leaf roller. For controlling the rice leaf roller, 34% profenofos-fluorine emulsifiable concentrate is a new-generation insecticide. This product is a new compound ultra-long-acting insecticide with a broad insecticidal spectrum and stable efficacy. Field trials show that spraying 50 ml per mu diluted in 40 kg of water, with a treatment interval of 23 days, achieves a control effect of over 95%, requires 2 fewer applications than conventional pesticides, reduces pesticide cost by more than 50%, and can save 2/3 of labor, truly delivering labor savings, cost reductions, and improved quality and efficiency.
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What are the control methods for the white-backed planthopper on rice?
Scientific name Sogatella furcifera (Horvath), belonging to the order Homoptera, family Delphacidae. Distributed in the water bamboo and rice-growing areas of China. Hosts include rice, water bamboo, corn, barley, wheat, sugarcane, sorghum, barnyardgrass, bluegrass, and others. Damage characteristics are the same as those of the brown planthopper. Morphological features: macropterous male body length 3.2-3.8 mm, light yellow, with dark brown spots. Vertex projecting forward; on the outer side of the lateral carinae of the pronotum and mesonotum, behind the compound eyes, there is 1 crescent-shaped dark brown spot; the lateral area of the mesonotum is dark brown
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Scientific control methods for the first-generation Asiatic rice borer (Chilo suppressalis) in rice
According to surveys conducted across Hubei Province, the overwintering mortality rate of the Asiatic rice borer this year was higher than last year, and the post-winter population base was lower than last year but still relatively high. In addition, suitable climate conditions and the expansion of high-quality rice varieties are both favorable to the occurrence and damage of rice stem borers, and the first-generation Asiatic rice borer will show a major outbreak trend in the rice-growing areas of our province, making the control situation still severe. In response to this severe situation, all localities should strengthen leadership, raise awareness, actively organize control efforts, and quickly launch a campaign to wrest grain from the pests to ensure the safety of grain production. 1. Recognize the situation clearly and strengthen organizational leadership. Last winter, our province suffered freezing ice and
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What is the scientific way to store potatoes? A complete breakdown of the methods
For the heap storage method, choose a warehouse with good ventilation and a dry site, first fumigate and disinfect with a mixture of formalin and potassium permanganate, then put the potatoes into the warehouse, generally piling 750 kg per sq m, about 1.5 m high, surround them with crates, baskets or wooden boards, and place several bamboo ventilation tubes in the middle. This method is suitable for short-term storage and the storage of autumn potatoes. For the ventilated warehouse storage method, put the potatoes into baskets and stack them in the warehouse, about 25 kg per basket, and a stack height of 5 to 6 baskets is appropriate. In addition, they can also be piled loose in the warehouse, with a pile height of 1.3 to 1.
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Occurrence Patterns and Control Methods of Potato Blackleg
Symptoms Potato blackleg is a bacterial disease that infects vascular bundle tissue and can infect potato stems and tubers. It can occur from seed potato sprouting to the late growth stage, and is most prevalent at the seedling stage. Most diseased plants lose water and droop, the leaf color remains unchanged, the whole plant wilts, and the blackleg portion is mostly softened and rotted. The color of the diseased part is yellowish-brown, light brown, dark brown, or pale green. The vascular bundles inside the stem and the vascular bundles of the underground stem basically become discolored in a ring shape. The junction of the stem base and the mother tuber first turns black, then spreads toward the area near the soil surface, forming blackleg. When humidity is high, the blackleg can rise to 3.
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Symptom Identification and Control Methods of Potato Blackleg
[Pathogen scientific name] Erwinia carotovora var. atroseptica (Van Hall) Dye. [Host crops] Many crops in the Solanaceae, Cucurbitaceae, Fabaceae, Apiaceae and other families. [Disease diagnosis] It can occur throughout the entire growth period, mainly damaging the root-stem area and tubers. When seed potatoes are heavily infected, sprouts rot before emergence, or emerged seedlings die quickly; in mild cases, symptoms appear successively when seedlings are 10-20 cm tall. Diseased plants are stunted, yellowed and dwarfed, and the cortex and
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Correct Methods for Using Seaweed Microbial Fertilizer on Potatoes
The application of seaweed microbial fertilizer in crop cultivation has already attracted widespread attention among growers. It performs especially well on vegetables. So how should seaweed microbial fertilizer be used when growing potatoes? What are the effects after use? Below, taking an outstanding microbial fertilizer - Jinbaobei Seaweed Microbial Fertilizer - as an example, we briefly introduce its application methods on potatoes. Jinbaobei Seaweed Microbial Fertilizer is imported in original packaging from Australia. It is developed through fine processing using the latest international microbial engineering technology and techniques, separated and purified from marine organisms.
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Detailed Explanation of New High-Yield Potato Cultivation Methods
In order to simplify traditional potato planting techniques, reduce labor intensity, reduce labor employment, lower production costs and improve planting efficiency, we conducted experimental demonstrations of the potato "four noes" planting technique. The technique is summarized as follows. I. Technical advantages 1. Saves labor and effort. Compared with traditional methods, this technique implements the "four changes": first, changing plowing and land preparation to compartmentalized no-till; second, changing hole-digging and hole sowing to laying seed potatoes on the soil surface; third, changing cultivation and weeding to mulching for weed prevention; fourth, changing digging soil to harvest potatoes to lifting straw and picking potatoes
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Symptoms and Control Methods of Potato Powdery Scab
[Pathogen scientific name] Spongospora subterranea (Wallr) Lagerh. [Host crops] Potato, black nightshade and Nicotiana rustica. [Disease diagnosis] It mainly affects underground tubers and roots, and above-ground stems can also be infected. When tubers are infected, pinhead-sized brown spots first appear on the epidermis, surrounded by a translucent halo, which then gradually expand and rise, forming rash-like "blister spots" 3 to 5 mm in diameter. In the early stage, the epidermis of the lesions does not rupture, which is the "closed blister" stage; as the disease progresses, a suberized halo forms at the boundary between diseased and healthy tissue, and then the epidermis ruptures and curls back, the tissue beneath turns orange-red, and a large amount of dark brown powdery material is released, the blister spots collapse to reveal cavities, forming crater-shaped powdery scabs, which is the "open blister" stage. On tubers that have already formed powdery scab, the ruptured epidermis can cause water loss during storage, or infection by other pathogens can lead to dry rot and shriveling. When roots are affected, tumors the size of a bean, single or clustered, grow on one side of the root; in severe cases, young plants wilt and die. When above-ground stems are infected, the lesion characteristics resemble those of affected tubers. The causal pathogen is Spongospora subterranea. The brown powdery material released from the blister spots of the diseased parts consists of the pathogen's resting spore balls. The spore balls vary in size and are formed by the aggregation of many nearly spherical yellow-brown resting spores, with hollow cavities inside, appearing like spongy spheres, and pore-like structures can be seen under the microscope. Individual resting spores are spherical to polygonal, with thin, smooth walls, and germinate to produce zoospores. The zoospores are nearly spherical, without a cell wall, bearing two flagella of unequal length at the apex, and later become motionless and form amoebae that invade the host root hairs.
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Recent Rice Pest and Disease Occurrence and Control Methods
Since entering July, our city has experienced continuous rain followed by high temperatures after the rain, which is extremely favorable for the occurrence of rice pests and diseases in the later stage. Currently, most of the rice in our city has entered the booting to heading stage, which is precisely the susceptible period for rice pests and diseases. On August 7, our station conducted field surveys in Tangdian, Datun and other areas, and found occurrences of rice blast, sheath blight, and rice leaf roller, requiring urgent control. The specific situation is as follows: Rice blast: Leaf blast was found on Yunhui 290 planted in Xinwafang, Datun, with a diseased leaf rate of 3.6%, disease index of 0.75, and an area of 2 mu. Sheath blight
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