Comprehensive prevention and control method of pitaya brown rot based on precise pesticide application and application thereof

A comprehensive prevention and control, dragon fruit technology, applied in application, gardening methods, botanical equipment and methods, etc., can solve problems such as poor timing of chemical application, easy risk of drug resistance, and excessive pesticide residues in fruits, etc., to achieve Reduce the source of initial infection, reduce the cost of drug control, and reduce the effect of control cost

Active Publication Date: 2019-12-03
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 ma

Method used

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  • Comprehensive prevention and control method of pitaya brown rot based on precise pesticide application and application thereof
  • Comprehensive prevention and control method of pitaya brown rot based on precise pesticide application and application thereof
  • Comprehensive prevention and control method of pitaya brown rot based on precise pesticide application and application thereof

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Experimental program
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Effect test

Example Embodiment

[0045] Example 1 Selection of bactericide species

[0046] Select 16 kinds of fungicides that have good bacteriostatic effect reported in the literature or are commonly used in production, adopt the bacteriostatic zone method, and use the bacteriostatic zone method. -CH8, which has been published on GenBank, accession number JX128103.1) was added with the same concentration (1000mg / kg) and equal volumes of different agents, cultured at 25°C, by observing the disappearance time of the inhibition zone, in vitro Under the conditions, the lasting period of different agents inhibiting the growth of pitaya brown rot mycelium was determined, 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 WP, 250 g / L propiconazole EC, 40% prothioconazole suspending agent, 430 g / L tebuconazole suspending agent, 400 The inhibition zone of 5 kinds of medicaments such as g / L flusilazole E...

Example Embodiment

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

[0053] A 20-mu orchard (type of red-fleshed dragon fruit) in Feng'an Town, Zijin County, Heyuan City, Guangdong Province, was built in the spring of 2012 and cultivated in cement columns, with 4 dragon fruits per column and 110 cement columns per mu. Due to the lack of plant protection knowledge and disease control methods, the dragon fruit brown rot is seriously damaged every year, the fruit peel phenomenon is prominent, the diseased shoots and diseased fruit rates are almost 100%, the yield is low, and the economic benefits are relatively poor. In early December 2016, the inventor took the orchard as a test demonstration site, and carried out demonstration by using a comprehensive prevention and control method of dragon fruit brown rot based on precise pesticide application of the present invention. The specific operations are as follows:

[0054] (1) Clean the garden in winter...

Example Embodiment

[0072] Example 3 Comprehensive prevention and control of brown rot in newly built pitaya orchards

[0073]A 50-mu orchard (species of red-fleshed dragon fruit) in Conghua District, Guangzhou City, Guangdong Province, built at the end of 2017, transplanted at the end of February 2018, row cultivation, equipped with drip irrigation and sprinkler irrigation facilities, covered with breathable plastic film to prevent weeds, and planted per mu 1000 plants. The growers have certain planting management experience and a high level of management, but lack professional knowledge of plant protection. They use a large number of fungicides in each application, and there are problems of abuse and indiscriminate use. The inventor used the orchard as a test 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 dra...

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Abstract

The invention discloses a comprehensive prevention and control method of pitaya brown rot based on precise pesticide application and application thereof. Based on the continuous research on the infestation regularity of the pitaya brown rot and screening of a fungicide with a long lasting period and a good systemic property, according to the characteristic that pathogenic bacteria mainly damage tender branches, the prevention and control focus is put on protecting the tender branches through precise pesticide application, by bringing the disease prevention and control period forward, the source of initial infection is reduced, diseased fruit-bearing branches are gradually replaced to reduce the fruit damage rate, and the purpose of effectively controlling orchards with severe pitaya brownrot is achieved. Through years of field trials and demonstrations, the method can effectively control the occurrence and damage of the pitaya brown rot in the field, and greatly reduce the frequency of pesticide application and the cost of labor and pesticides.

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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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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