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A comprehensive prevention and control method of dragon fruit brown rot based on precision pesticide application and its application

A comprehensive prevention and control, dragon fruit technology, applied in the fields of application, horticultural methods, botanical equipment and methods, etc., can solve the problems of poor timing of chemical application, easy risk of drug resistance, waste of financial and material resources, etc., to achieve guaranteed The effect of healthy branches, reducing the chance of infection, and broad spectrum of sterilization

Active Publication Date: 2021-12-17
PLANT PROTECTION RES INST OF GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the prevention and treatment of pitaya brown rot mainly relies on chemical pesticides, but there are not many effective pesticides to choose from. Fruit farmers often use several fungicides in combination. During the peak of the disease, chemical pesticides are sprayed almost once a week, resulting in A lot of waste of financial and material resources and environmental pollution, and the long-term use of chemical pesticides is likely to cause risk of drug resistance
In addition, 4 to 6 batches of dragon fruit can hang in a year. Often in the same orchard, some have just bloomed and some have matured. It is not easy to choose the timing of chemical application, and it is easy to cause pesticide residues in the fruit to exceed the standard, affecting quality and safety.
Dragon fruit can be damaged by brown rot throughout the growing season. The most serious disease in South China is from May to September every year. At this time, it is often a high temperature and rainy season. The field control effect of relying solely on chemical pesticides is relatively poor, and there is an urgent need for production. A precise, efficient and safe comprehensive prevention and control method for dragon fruit brown rot

Method used

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  • A comprehensive prevention and control method of dragon fruit brown rot based on precision pesticide application and its application
  • A comprehensive prevention and control method of dragon fruit brown rot based on precision pesticide application and its application
  • A comprehensive prevention and control method of dragon fruit brown rot based on precision pesticide application and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 fungicide kind selection

[0046] Select 16 kinds of fungicides that are reported in the literature to have better antibacterial effect or commonly used in production, and adopt the method of inhibition circle, in the DF mixed with pathogen conidia (the pathogen is the pitaya canker bacterium Neoscytalidium dimidiatum) -CH8, which has been published on GenBank, and the accession number is JX128103.1) was added to the holes of the PDA plate with the same concentration (1000 mg / kg) and equal volumes of different agents, cultivated at 25 ° C, and observed the disappearance time of the inhibition zone. The persistence period of different agents to inhibit the mycelial growth of dragon fruit brown rot fungus was determined under the same conditions, and the results are shown in Table 1.

[0047] The results showed that by observing the disappearance time of the inhibition zone, it was found that 50% fludioxonil wettable powder, 250 g / liter propiconazole EC, 40% ...

Embodiment 2

[0052] Example 2 Comprehensive prevention and control of dragon fruit brown rot in old orchards

[0053] A 20-acre orchard (the variety type is red-fleshed dragon fruit) in Feng'an Town, Zijin County, Heyuan City, Guangdong Province. The garden was built in the spring of 2012 and cultivated with cement pillars. Each pillar has 4 dragon fruits and 110 cement pillars are planted per mu. Because growers lack plant protection knowledge and do not know how to prevent and control diseases, dragon fruit brown rot causes serious damage every year, and the phenomenon of fruit peeling is prominent. The rate of diseased shoots and diseased fruits is almost 100%, the yield is low, and the economic benefits are relatively poor. In early December 2016, the inventor used the orchard as an experimental demonstration site, and used a comprehensive prevention and control method for dragon fruit brown rot based on precision application of the present invention to carry out demonstrations. The sp...

Embodiment 3

[0072] Example 3 Comprehensive Prevention and Control of Brown Rot in New Pitaya Orchard

[0073]A 50-acre orchard in Conghua District, Guangzhou City, Guangdong Province (the variety is red-fleshed dragon fruit), was built at the end of 2017 and transplanted at the end of February 2018. It is row-type cultivation, equipped with drip irrigation and sprinkler irrigation facilities, and covered with breathable plastic film to prevent weeds. 1000 plants. The growers have certain planting management experience and a high level of management, but they lack professional knowledge in plant protection. They use a large number of fungicides in each spraying, and there are problems of abuse and misuse. The inventor took the orchard as an experimental demonstration site in early April 2018. At this time, dragon fruit brown rot occurred sporadically in the orchard, and the development of the disease was effectively controlled by using a comprehensive prevention and control method for drag...

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Abstract

The invention discloses a method for comprehensive prevention and control of dragon fruit brown rot based on precise pesticide application and its application. The present invention is based on the continuous research on the catastrophic law of dragon fruit brown rot and the selection of fungicides with long-lasting effect and good systemic property. In terms of precise pesticide application, by moving the disease prevention and control period forward, reducing the source of initial infection, and gradually replacing diseased fruit-bearing branches, the fruit damage rate can be reduced, and the orchard with serious dragon fruit brown rot can be effectively controlled. After years of field tests and demonstrations, the method of the invention can effectively control the occurrence and damage of dragon fruit brown rot in the field, and greatly reduce the frequency of spraying and labor and drug costs.

Description

technical field [0001] The invention belongs to the technical field of plant protection, and in particular relates to a method for comprehensive prevention and control of dragon fruit brown rot based on precise pesticide application and its application. Background technique [0002] Dragon fruit (Hylocereus undatus) is a perennial climbing succulent plant belonging to the cactus family. It is native to Central America such as Brazil and Mexico. In the early 1990s, after the successful introduction and trial planting in Taiwan, my country, it was introduced to the mainland. At present, dragon fruit has been planted in large areas in Guangxi, Guangdong, Hainan, Fujian, Guizhou, Yunnan and other places in my country. Dragon fruit has become one of the important economic crops for farmers to get rid of poverty and become rich. [0003] Dragon fruit brown rot, also known as canker, caused by Neoscytalidium dimidiatum infection, is a devastating fungal disease that seriously thre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/05A01G7/06A01G13/00
CPCA01G22/05A01G7/06A01G13/00
Inventor 蓝国兵何自福佘小漫于琳汤亚飞李正刚邓铭光
Owner PLANT PROTECTION RES INST OF GUANGDONG ACADEMY OF AGRI SCI
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