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
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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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