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Control methods for the Ningxia ground pearl (Porphyrophora ningxiana) pest on licorice
It is distributed in all licorice-producing areas nationwide, generally causing damage from the seedling stage to the mature plant stage. The Ningxia ground pearl has 8 host plant species, all of which are perennial leguminous herbaceous perennials, with licorice suffering the most severe damage, while other hosts are only slightly affected. (1) Damage period and damage symptoms: Overwintering nymphs can move intermittently when the surface soil temperature reaches 6°C, and become frequently active when the daily average temperature exceeds 12°C, in order to search for hosts. Early March is the initial activity stage, mid-to-late April is the peak period for searching hosts, and by mid-May they have basically all settled. From late May to late July
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Effective control methods for leaf beetle pests on licorice
The main species of leaf beetles harming licorice include Diorhabda tarsalis, Pynrrhalta aenescens, Monolepta quadrigutdata, Diorhabda rybakowi, Ceytra sp., Colasposoma dauricum, Coptoc
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What are the common pests and diseases of licorice (Glycyrrhiza) and their control methods?
(1) Rust: in the early stage of the disease, spray with 25% triadimefon wettable powder at 1000 times dilution or 97% dinocap at 300 times dilution for control, once every 7-10 days, for a total of 2-3 sprays. (2) Brown spot: spray once with 1:1 Bordeaux mixture before the disease occurs; in the early stage of the disease, choose 70% thiophanate-methyl wettable powder at 2000 times dilution or 75% chlorothalonil at 500 times dilution for spray control, once every 7-10 days, for a total of 2 sprays. (3) Aphids: during the occurrence period, spray-kill with 40% dimethoate emulsifiable concentrate at 1500 times dilution.
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Licorice Pest and Disease Control Methods and Key Technical Points
(1) Rust: occurs from May to June, damaging leaves. Control methods: ① Gather and burn diseased branches; ② Spray 90% nabam at 400 times dilution in the early stage of the disease. (2) Brown spot: occurs from May to June, damaging leaves. Control methods: ① Gather and burn diseased branches; ② Spray 1:1:100-160 Bordeaux mixture or 70% thiophanate-methyl wettable powder at 1500-2000 times dilution in the early stage of the disease. (3) Powdery mildew: occurs from May to June, damaging leaves. Control method: Spray 0.2-0.3 degrees Baume lime sulfur
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Methods and Technical Key Points for the Prevention and Control of Licorice Pests and Diseases
The main diseases of licorice are rust, powdery mildew and brown spot. Licorice rust mainly damages the leaves and tender stems of the plant; the back of infected leaves produces yellow-brown blister-like lesions on one side, and after the epidermis ruptures, brown powder is released. Prevention and control method: burn the leaves of diseased plants. In the early stage of the disease, treat with a 1000-fold dilution of Fenxiuning; you can also use 0.3 degrees Baume lime sulfur mixture, or a 500-fold dilution of 65% wettable zineb, or a 200-fold dilution of dithianon sodium for spray control, spraying once every 7 to 10 days, and 2 to 3 consecutive sprays are sufficient. Licorice brown spot is also called
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Five Steps for Stocking Brood Shrimp in Rice-Shrimp Rotation Explained
Now is the golden time for stocking brood shrimp. Farmers should pay attention to the following points when stocking brood shrimp: 1. Carry out basic rice field renovation, mainly by digging perimeter ditches, reinforcing embankments, building water inlet and drainage systems, and setting up anti-escape facilities. 2. Disinfect the perimeter ditches well, preferably by spreading quicklime throughout, with a dosage of 100 jin per mu, and stock brood shrimp one week later. 3. Select good brood shrimp and stock them reasonably. Choose sexually mature, healthy individuals with complete appendages, and stock them at a female-to-male ratio of 3:1. Stock 15-20 kg of brood shrimp per mu. In rice fields that have been used for farming before
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Detailed Introduction to the Ejingnuo No. 6 Rice Variety
Breeding unit: Jingzhou Prefecture Institute of Agricultural Sciences, Hubei Province. Approval status: Approved by the Crop Variety Approval Committees of Hubei Province, Henan Province, Sichuan Province, and Hunan Province; approved by the National Crop Variety Approval Committee in 1991. Variety registration number: GS01002-1990. Variety source: Guichao No. 2 treated by radiation. Characteristics: Plant height about 110 cm, plant type moderately loose, upper leaves narrow, long and erect, moderate tillering ability, uniform heading. Effective panicles per mu 250,000, filled grains per panicle 90, seed setting rate about 80%. Grain is long-shaped; glume and sterile lemma are golden yellow; the tip of the glume is colorless, occasionally with awn; 1000-grain weight 26 g, milling yield 78.7%, head rice rate 61%, amylose content 1.1%, protein content 8.2%. Yield per mu is slightly lower than that of Guichao No. 2, but the glutinous quality is excellent. Resistant to bacterial leaf blight and rice blast, tolerant to sheath blight. General yield 450 kg per mu.
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The role and application method of spraying paclobutrazol on rice
Paclobutrazol is a highly active plant growth retardant and broad-spectrum fungicide. Its internationally used code is pp333, and the code for the product made in China is MET. Its physiological effects on rice are mainly dwarfing, promoting tillering and improving stress resistance. Moreover, after transplanting, the seedlings turn green quickly, tiller early, the number of effective panicles increases, and the seed-setting rate and 1000-grain weight increase. It is a simple, easy and effective measure to increase yield. Experiments in various places in Liaoning in recent years have found that rice seedlings sprayed with paclobutrazol show the following changes compared with the control: 1. The seedlings become shorter. Spraying at the rice seedling stage
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Winter control of rice pests and diseases can yield twice the result with half the effort
In winter, rice pests and diseases are in a dormant state: pests stop feeding and pathogens stop infecting. If farmers seize this favorable opportunity to carry out control, they can achieve twice the result with half the effort. 1. Dispose of diseased rice straw. Diseased straw is the overwintering site for the pathogens of rice bacterial leaf streak, bacterial blight, rice blast and many other diseases, and is the main source of infection the following year. Before the end of March, farmers can compost diseased straw at high temperature, or process it as feed or fuel, which can greatly reduce the number of pathogens. For diseased rice straw that cannot be fully processed before the end of March,
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Oriental Seed Industry's Rice Breaks World Records Three Times
Just as we were worrying about national food security, news came from Fujian Oriental Seed Industry Co., Ltd.: using the brand-new specific germplasm resources Donghui 6, Donghui 1728, and Donghui 4886 strong dominant restorer lines, they bred the new super rice varieties II You 6, II You 28, and II You 4886 through combination, achieving a historic breakthrough in which rice yield per mu surpassed the 1,200 kg mark, and in 2004, 2005, and 2006, for three consecutive years, with yields of 1,219.9 kg, 1,229
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