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Method for controlling late blight by late sowing of white potato

A potato late blight, potato technology, applied in the field of plant protection, can solve problems such as disease prevalence, and achieve the effects of reducing application amount, optimizing field distribution, and reducing field humidity

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

[0003] The present invention overcomes the shortcoming of the disease prevalence caused by the overlap between the susceptible period and the rainy season of potatoes planted according to the conventional sowing period, and provides a method for controlling the prevalence of late blight by late sowing of potatoes

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0007] Contrast experiment in the same field: 2 treatments were set up, and the control was sown according to the conventional sowing date of potatoes, sowing on May 5th, the sowing specification was single row sowing, the row spacing was 60cm, and the plant spacing was 25cm; the treatment was late sowing, sowing on July 15th, and ridging Plum blossom ponds are planted with a ridge width of 50cm and a ridge spacing of 70cm. The plum blossom-shaped ponds are opened on the ridge, and the diagonal pond distance is 70cm. The potato variety is Hui-2, the planting density is 2200 plants per mu, and the field fertilization and management methods are 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 Effects of treatments and controls on controlling potato late blight

[0009]

Embodiment 2

[0011] Contrast experiment in the same field: 2 treatments were set up, the control was planted according to the regular sowing date of potatoes, sowing on May 15, the sowing specification was single-row sowing, the row spacing was 60cm, and the plant spacing was 25cm; the treatment was late sowing, sowing on July 26, and ridging Plum blossom ponds are planted with a ridge width of 60cm and a ridge spacing of 60cm. The plum blossom-shaped ponds are opened on the ridge, and the diagonal pond distance is 65cm. The potato variety is Mira, and the planting density is 2,800 plants per mu. Field fertilization and management methods are 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 Effects of treatments and controls on controlling potato late blight

[0013]

Embodiment 3

[0015] Contrast experiment in the same field: 2 treatments were set up, and the control was sown according to the regular sowing date of potatoes, sowing on May 25, the sowing specification was single-row sowing, the row spacing was 60 cm, and the plant spacing was 25 cm; the treatment was late sowing, sowing on August 9, and ridging Plum blossom ponds are planted with a ridge width of 55cm and a ridge spacing of 65cm. The plum blossom-shaped ponds are opened on the ridge, and the diagonal pond distance is 60cm. The potato variety is Hezuo 88, the planting density is 3300 plants per mu, and the field fertilization and management methods are carried out in a conventional way. The incidence and control effects of potato late blight were investigated, and the results are shown in Table 3.

[0016] Table 3 Effects 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 late 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; the difference is to sow potato late; potato is sowed from the second ten days of July to the first ten days of August and is harvested from the last ten days of October to the first ten days of November; potato is planted in quincuncial ponds on ridges with the ridge width of 50 to 60cm and the ridge spacing of 60 to 70cm; the quincuncial ponds are formed on the ridges, and the diagonal length of each pond is 60 to 70cm; the planting density is 2,200 to 3,300 stocks for each mu; the breeds of potato can be Hui-2, Mila, Hezuo 88 and Weiyu No.3; and the method is suitable for tobacco and vegetable fields. The method can reduce the dosage of chemical pesticides and the adverse effect of the chemical pesticides on the ecological environmental pollution of farmland, provides a new method for the ecological control of the potato late blight, and has good social and ecological benefits.

Description

Technical field: [0001] The invention relates to a method for controlling potato late blight by late sowing of potatoes, belonging to the field of plant protection. Background technique: [0002] Potato late blight is an important potato disease caused by Phytophthora infestans Montagne de Bary of Phycomycetes, Oomycetes, and Peronosporaceae. The stomata, epidermis, and wounds invade, and the underground part invades from the lenticels, wounds, and bud eyes of the tubers. The relative humidity reaches more than 75%. When the leaves hold water droplets, the pathogens are easy to invade and develop diseases. In general years, it can cause 10%-20% production reduction, and in major years, it can reach 50%-70%. In severe cases, it can cause crop failure. The occurrence and prevalence of potato late blight are closely related to the climatic conditions before and after the flowering period, especially the concentrated and large rainfall in July to August are the main epidemic fa...

Claims

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Application Information

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