|Table of Contents|

Control Effects of Different Biocontrol Preparations on Two Cucumber Airborne Diseases(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年21
Page:
75-79
Research Field:
Publishing date:

Info

Title:
Control Effects of Different Biocontrol Preparations on Two Cucumber Airborne Diseases
Author(s):
LI Baoqing1; LU Xiuyun2; MA Yu3; HAN Qingdian4
1.Linyi Agricultural Technology Promotion Center,Linyi,Shandong 276000;2.Plant Protection Institute,Hebei Academy of Agricultural and Forestry Sciences,Baoding,Hebei 071000;3.Shaanxi Microbiology Institute,Xi′an,Shaanxi 710000;4.College of Life Science,Linyi University,Linyi,Shandong 276000
Keywords:
gray mold; powdery mildew; biological control
PACS:
-
DOI:
10.11937/bfyy.20171250
Abstract:
Oleozon,Bacillus subtilis and agricultural antibiotic 120 were used as supplied fungicides,cucumber ‘DERIT’ was used as the indicating crop,control effect of three biocontrol preparations on powdery mildew and gray mold of cucumber were studied.The results showed that application of different agents before diseases occur could prohibit the diseases effectively.The three treatments gave control efficacy of 80.41%,88.45% and 88.70% for cucumber gray mold,as which were 80.84%,86.51% and 85.55% in cucumber powdery mildew.Different emulsions were sprayed on cucumber plants in the greenhouse when the first symptoms of diseases occurred naturally.The effect of different agents against cucumber gray mold were 28.72%,53.21% and 56.32%.Compared with the treatments of gray mold,the control effects on powdery mildew disease were 36.99%,58.80% and 58.93%.The contents of leaf area and fruit number per plant were increased in varying degrees after spraying oleozon and Bacillus subtilis,the increasing value of which were 25.23% and 31.78% in leaf area,12.15% and 19.79% in fruit number respectively.In conclusion,the control effects of three different treatments were above 80% when applied before the appearance of the symptom,while the efficacy were only 60% after the appearance of the symptoms.Plant growth-promoting effects on cucumber was also observed when used oleozon and Bacillus subtilis.The results showed that the application of biological pesticide should be put on the prevention of diseases.

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Last Update: 2017-11-14