Prevention and control method of potato late blight

A potato late blight and potato technology, which is applied in the fields of botanical equipment and methods, seed coating/seed dressing, horticulture, etc., can solve the problems of unreachable, uncontrolled onset, and difficulty in recovering late blight damage. , to achieve the effect of increasing production and reducing the number of times of spraying

Inactive Publication Date: 2012-07-18
CROP INST SICHUAN PROVINCE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this pretreatment cannot ensure that the drug is evenly treated on the seed potatoes, and the drug effect can only be maintained for a period of time
In addition, during the growth period, the disease is not controlled because the primary infection of the spores of the exotic bacteria still exists
Delayed sowing is obviously

Method used

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  • Prevention and control method of potato late blight
  • Prevention and control method of potato late blight
  • Prevention and control method of potato late blight

Examples

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Effect test

Embodiment 1

[0025] Example 1: Comprehensive control of late blight in Zhaojue County, Liangshan Prefecture, Mianning County, and Daofu County, Ganzi Prefecture.

[0026] Potato virus-free seed potatoes are selected, the variety is "Hui-2" virus-free first-grade original seed, the potato skin is smooth, the age is disease-free, and 50-100 grams of whole potatoes are sown. Germinate the ungerminated seed potatoes 15 days before sowing. When the germination reaches 1cm, spread the seed potatoes thinly on the board or on the rack (second floor), and place them in a room with sufficient light to spread them to dry, which can make the potato sprouts Stronger; before sowing, cut more than 40g seed potatoes into 20 potato pieces, each potato piece has bud eyes, and then spray the potato pieces with metalaxyl mancozeb; the previous crop is selected as Rice and other non-Solanaceous crops are cultivated in high ridges and double rows, with a ridge width of 100 cm, a wide row of 60 cm, a narrow row ...

Embodiment 2

[0031] Embodiment 2: Carry out late blight comprehensive control in Zhaojue County, Liangshan Prefecture, and Daofu County, Ganzi Prefecture.

[0032] Potato virus-free seed potatoes are selected, the variety is "117" virus-free first-class original seed, the potato skin is smooth, the age is disease-free, and 50-100 grams of whole potatoes are sown. Germinate the ungerminated seed potatoes 15 days before sowing. When the germination reaches 0.5cm, spread the seed potatoes thinly on the board or on the rack (three layers), and place them in a room with sufficient light to spread them to dry. Stronger; before sowing, cut more than 40g seed potatoes into 30g potato cubes, each potato cube has bud eyes, and then soak the potato cubes with metalaxyl mancozeb; choose non-solanaceous crops such as rice as the previous crop The land is cultivated in double rows with high ridges, ridge width 100 cm, wide row 60 cm, narrow row 40 cm, hole (plant) spacing 25 cm, density 4500 plants / mu, ...

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Abstract

The invention provides a prevention and control method of potato late blight, which is used for preventing and controlling potato late blight by comprehensive utilization of the traditional measures. The prevention and control method comprises the aspects of: potato seed treatment before sowing, management at seedling stage, cultivation measures, prediction and pre-warning, chemical control and the like. The prevention and control method is stable and permanent in prevention and control, reduces environmental pollution, is low in cost, and can predict and persistently control, thereby being amethod for realizing comprehensive prevention and control of potato late blight. From the growing conditions of the above-ground parts in field, the purpose of controlling the incidence and prevalence of late blight is achieved by adopting a late blight prediction and pre-warning system to instruct the chemical control on the field late blight. By adopting the prevention and control method, the disease plants are few, the yield is increased and is 25.7-45.8% higher than that of common planting, and the chemical spraying frequency is simultaneously reduced.

Description

technical field [0001] The invention relates to the technical field of potato pathogen control, in particular to a control method for potato late blight. [0002] Background technique [0003] Potato late blight (Potato Late Bright) is caused by Phytophthora infestans, a devastating fungal disease that causes potato stem and leaf death and tuber rot. The pathogen overwinters mainly as mycelium in potato cubes. Sowing fungus-infected potato pieces will result in no germination or death after germination. Some become central diseased plants after unearthed. The spread expands. The sporangia on the diseased leaves can also infiltrate into the soil with rainwater or irrigation water to infect the tubers, forming diseased tubers and becoming the main source of infection in the following year. [0004] In recent years, potato late blight ranks first in the world's crop diseases in terms of losses (10%-40%) and chemical control costs that exceed those of rice blast and stri...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01C1/06
Inventor 何卫胡建军车兴壁谢开云卢学兰王余明谭监润王克秀唐铭霞陈萍萍刘冬
Owner CROP INST SICHUAN PROVINCE ACAD OF AGRI SCI
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