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Methods and Technical Key Points for Pest and Disease Control in Asarum
For damping-off disease, before the seeds emerge in spring, spray the seedbed surface with 70% Dexon at 500 times dilution; after emergence, use 50% carbendazim at 500 times dilution for control. Sclerotinia disease mostly occurs in June-July. At the early stage of the disease, brown strip-shaped lesions appear at the base of the leaf petioles, and after they spread, the aboveground parts lodge and die. At the same time, the pathogen spreads to the roots, covering the rhizome with black sclerotia, until the entire root rots away leaving only the root bark. The control methods are: loosen the soil promptly in early spring, raise the soil temperature, and pay attention to drainage; promptly pull out and destroy diseased plants
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Control Methods and Technical Key Points for Pests and Diseases of Asarum (Wild Ginger)
The main disease is sclerotinia rot, which mainly damages the roots. In the early stage, the base of the root becomes soft and rotting, with white filamentous substances visible, and gradually the aboveground leaves turn yellow, then lodge and die. Spray the leaves or drench the roots with a 500 to 1000 times dilution of 50% carbendazim. The main pest is the black hairy caterpillar, which generally appears in mid to late June. It damages the leaves, and in severe cases the leaves are completely eaten bare. Spray with a 1000 times dilution of dichlorvos or trichlorfon to kill them.
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Planting dry Pinellia has high benefits and is a good project for farmers to increase income.
According to statistical analysis of market surveys of major medicinal herb markets and production areas across the country, there is currently a large gap between supply and demand for dry Pinellia, with a strong trend, and the price has risen to 45-52 yuan per kg, with a favorable outlook. According to Zhao Xijin, a traditional Chinese medicine pharmacist at the Anguo City Traditional Chinese Medicinal Materials Association in Hebei, wild resources of dry Pinellia are gradually decreasing, and the seed quantity per mu for planting dry Pinellia is relatively large, about 30-40 kg, with high planting costs (over 600 yuan). Herb farmers are generally unwilling to develop it on a large scale and only plant it on a small scale, cultivating their own seedlings before expanding. This situation has caused
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Analysis of Cotton Production Misconceptions and Ways to Increase Yield Through Plant Protection (Part 5)
For more than a decade, with the widespread promotion of genetically modified insect-resistant cotton, cotton bollworm is no longer enough to make cotton farmers turn pale at the mention of pests. However, Fusarium wilt and Verticillium wilt have always been the "tightening band" giving cotton farmers headaches, aphids and red spider mites "stir up trouble" every year, cotton stink bugs and tobacco whiteflies have become increasingly rampant in recent years, and together with cotton bollworm suddenly breaking out in certain years, pesticide control of cotton is still an unavoidable matter. At the same time, there are also the following two serious problems in pest and disease control, which directly lead to
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How to prevent and control sesame diseases in hot and humid weather
Recently, some farmers have reported that some sesame plants show leaves curling upward and wilting, some report that sesame leaves wilt rapidly from the top downward, and others report that sesame leaves wither from the bottom upward. What diseases are these exactly? The farmers cannot figure it out either, and they are all asking agricultural technicians for technical guidance, telling them how to prevent and control these diseases. From the current climate factors, high temperatures accompanied by humidity easily trigger sesame diseases, especially in sesame fields with poor drainage, low-lying terrain, or continuous cropping, which are more susceptible to disease. From the sesame symptoms reported by farmers in various places
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New sesame variety Zhongzhi 12: high yield, disease-resistant and high quality
Zhongzhi 12 was developed by the Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences through crossing the introduced foreign sesame variety "CLSU-9" as the female parent with "Yiyangbai" as the male parent, followed by multiple generations of directional selection, and was approved by the Hubei Provincial Crop Variety Approval Committee in 2003. Characteristics: This variety is of the single-stem type, with three flowers per leaf axil and four-angled capsules. The plant is relatively tall, generally about 160 cm in height, and can reach more than 2 m at its tallest. The leaves are green, relatively large, with longer petioles, and the stem is greenish-yellow at maturity
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Comprehensive Prevention and Control Methods and Technical Key Points for Porcine Respiratory Disease Syndrome
This disease is characterized by occurring throughout the year, in an endemic pattern, affecting pigs of all ages, mostly at 13-20 weeks of age, with a course of 2-8 days and a relatively high mortality rate. Symptoms: affected pigs show elevated body temperature of 40.5°C-42°C, depression, reduced or absent appetite, difficulty breathing, sometimes coughing, pale visible mucous membranes, pale or purplish skin, constipation or diarrhea, abortion and stillbirth in pregnant sows, and neurological symptoms in suckling piglets with high mortality. Pathological necropsy: necropsy of 6 dead pigs and 2 severely ill
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Disease Occurrence and Prevention Methods for Pigs at Different Feeding Stages
Disease occurrence in pigs at different feeding stages. The incidence of the three major infectious diseases of pigs. Swine fever, swine erysipelas and swine pasteurellosis are collectively known as the three major infectious diseases of pigs. In our country, the total mortality rate of affected pigs accounts for about 8% of the total raised population, and in areas with better prevention and control the pig mortality rate is also 5%. Therefore, the level of pig disease prevention and control should be raised. If the total pig mortality rate could be reduced by one percentage point each year, that would be equivalent to an additional 5 million pigs sent to market - what a huge fortune that would be. According to relevant statistics,
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Symptoms and Prevention of Protozoan Diseases in Lionfish
Pathogen: Saltwater Ichthyophthirius, the parasite body is spherical or oval, similar to Ichthyophthirius multifiliis, size 0.066-0.45×0.034-0.36mm, the entire body is covered with cilia, generally with four bead-like macronuclei. Epidemiology: Saltwater Ichthyophthirius mainly parasitizes the gills, skin, fins and other parts of marine fish. It is prevalent in all coastal sea areas from mid-May to August each year. The suitable breeding temperature for Saltwater Ichthyophthirius is 20-25°C, and it is transmitted by *cysts and their larvae. Symptoms: First, a large number of small white
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How to prevent and treat common diseases of broodstock? Explained clearly in one article
1. Vibriosis. The pathogen is Vibrio alginolyticus. When fish are affected, they move sluggishly, frequently swim to the surface, and reduce or stop feeding; the ends of the caudal, pelvic and dorsal fins become congested and inflamed, the tissue between the fin rays gradually breaks apart, and in severe cases the fin rays rot; the eyes bulge outward, and the body surface of diseased fish shows ulcerative lesions in variable locations, which in severe cases rot into a deep hole with exposed bone; Vibrio can be isolated from the blood and internal organs, and the mortality rate is relatively high. Prevention and treatment methods: 1) Immunize the fish with a vaccine. 2) Medicated immersion, usually with 100 ppm
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