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Method for controlling late blight by sowing white potato ahead of time

A technology of sowing potatoes in advance, applied in the field of plant protection, can solve the problems of limited number of disease-resistant varieties, failure to meet production needs, and ineffective control effects, etc., to increase farmers' income, increase grain production and farmers' income, and facilitate ventilation Translucent effect

Inactive Publication Date: 2009-05-20
YUNNAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional planting time of potatoes is sowing in May and harvesting in September. The occurrence and prevalence of potato late blight are positively correlated with rainfall. The rainfall in Southwest my country is concentrated from July to August, which overlaps with the susceptible period of potato late blight in conventional planting. Lead to severe occurrence of potato late blight, causing severe yield loss
A large amount of pesticides are used to control potato late blight, but due to excessive rainfall, the control effect is not obvious, which not only increases the production cost, but also produces pesticide residue pollution
Another common control method is to plant disease-resistant varieties, but the number of disease-resistant varieties is limited and cannot meet the production needs. At present, potato late blight is still a major problem affecting potato production. There is no method for early sowing of potatoes to control late blight.

Method used

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  • Method for controlling late blight by sowing white potato ahead of time
  • Method for controlling late blight by sowing white potato ahead of time
  • Method for controlling late blight by sowing white potato ahead of time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Comparative experiment in the same field: 2 treatments were set up, and the control was sown according to the conventional sowing date of potatoes. The treatment was early sowing, the potato variety was Hui-2, sowing on January 10, planting in a single row, row spacing 80cm, plant spacing 25cm; sowing density: 3500 plants / mu, field fertilization and management methods were carried out in a conventional manner. The incidence and control effects of potato late blight were investigated, and the results are shown in Table 1.

[0008] Table 1 Effect and yield of treatments and controls on controlling potato late blight

[0009]

Embodiment 2

[0011] Comparative experiment in the same field: 2 treatments were set up, the control was planted according to the conventional sowing date of potatoes, the variety was Mira, sown on May 15, the sowing specification was single row sowing, the row spacing was 60cm, and the plant spacing was 25cm; the treatment was early sowing, and the potato variety was Mira, sowed on January 25, planted in a single row, row spacing 90cm, plant spacing 25cm; sowing density: 3200 plants / mu, field fertilization and management methods were carried out in a conventional manner. The incidence and control effects of potato late blight were investigated, and the results are shown in Table 2.

[0012] Table 2 Effect and yield of treatments and controls on controlling potato late blight

[0013]

Embodiment 3

[0015] Contrast experiment in the same field: 2 treatments were set up, the control was planted according to the conventional sowing date of potatoes, the variety was He He 88, and it was sown on May 20. Cooperation 88, sowed on February 23, planted in a single row, row spacing 100cm, plant spacing 25cm; sowing density: 2600 plants / mu, field fertilization and management methods were carried out in a conventional manner. The incidence and control effects of potato late blight were investigated, and the results are shown in Table 3.

[0016] Table 3 Effect and yield of treatments and controls on controlling potato late blight

[0017]

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Abstract

The invention relates to a method for controlling a potato late blight through potato early sowing, which belongs to the technical field of plant protection. The method comprises a technical proposal that the conventional potato fertilization and field management method is kept unchanged; potato is sowed early from January to February; potato is sowed in a single row with the row spacing of 80 to 100cm; the sowing density is 2,600 to 3,500 stocks / mu; the potato breeds can be Mila, Hezuo88, Weiyu No.3, Feiwuruita, Hui-2, and the like. The method can also be applied to sugarcane fields, vegetable fields, mulberry fields, and the like. The invention can improve the yield of potato and the returns of farmers, and reduce the dosage of pesticides, as well as has good economic, social and ecological benefits, scientific meaning and wide application prospects.

Description

Technical field: [0001] The invention relates to a method for controlling late blight by early sowing of potatoes, belonging to the field of plant protection. Background technique: [0002] Potato late blight caused by Phytophthora infestans de Bary is an important disease in potato production. Potato late blight is prone to epidemics and disasters under the conditions of rainy, foggy, dewy, and temperatures of 10-23°C. Especially in various planting areas in Yunnan Province, the rainy season is concentrated from July to September, and the precipitation accounts for more than 70% of the whole year, and the average monthly temperature is between 13 and 18°C, which is suitable for the occurrence and prevalence of potato late blight. The conventional planting time of potatoes is sowing in May and harvesting in September. The occurrence and prevalence of potato late blight are positively correlated with rainfall. The rainfall in Southwest my country is concentrated from July to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
Inventor 朱书生朱有勇李成云王海宁何霞红杨静李炎谢勇孙雁刘林
Owner YUNNAN AGRICULTURAL UNIVERSITY
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