|Table of Contents|

Bacteriostatic Effect of Spring Rapycin and Thiazole on Erwinia amylovora and Safety Evaluation of Fragrant Pear

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年9
Page:
113-121
Research Field:
Publishing date:

Info

Title:
Bacteriostatic Effect of Spring Rapycin and Thiazole on Erwinia amylovora and Safety Evaluation of Fragrant Pear
Author(s):
HE Jiajing; MA Xiangyu; LIU Zhenya; DAN Hongxia; LI Yapeng; ZHANG Wangbin
(College of Horticulture and Forestry,Tarim University/The Nationa Land Local Joint Engineering Laboratory of High Efficiency and Superior-Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Treesin South Xinjiang/Key Lab of Xinjiang Production and Construction Corps in Comprehensive Agricultural Pest Management in Southern Xinjiang/Scientific Observing and Experimental Station of Crop Pests in Alar，Ministry of Agriculture and Rural Affairs,Alar,Xinjiang 843300)
Keywords:
spring rapycin; thiazole zinc; Erwinia amylovora; Korla pear; safety evaluation; virulence test
PACS:
S 661.2
DOI:
10.11937/bfyy.20244286
Abstract:
Taking 15-year-old Korla pear as the test material，the inhibition effect of spring rapycin and thiazole zinc with different concentrations on the growth of Erwinia amylovora was studied by indoor bacteriostatic zone method and field spray method，and the safety evaluation was made for the growing period to screen effective fungicides against Korla fragrant Erwinia amylovora,and in order to provide reference for the prevention and treatment of Erwinia amylovora.The results showed that all the six fungicides had certain bacteriostatic effect on Erwinia amylovora.The EC50 values were in the order of 40% thiazole zinc (226 674.007 mg·L-1)>30% thiazole zinc (171 636.427 mg·L-1)>6% spring rapycin (21 425.559 mg·L-1)>40% spring rapycin·thiazole zinc (12 614.290) mg·L-1)>2% spring rapycin (11 861.345 mg·L-1)>4% spring rapycin (231.950 mg·L-1)，the safe concentrations for pear tree growth were 6 666.70 mg·L-1，6 666.70 mg·L-1，1 000.00 mg·L-1，6 666.70 mg·L-1，500.00 mg·L-1 and 156.25 mg·L-1.Field efficacy test，4% spring rapycin was effectively controlled in the 6 hours of medication，the disease index was controlled about 30，and the disease was not developing at 48 hours，the control effect was stable at 62.50%，followed by 2% spring rapycin 60.00%，40% spring rapycin·thiazole zinc 56.70%，6% spring rapycin 43.40%，30% thiazole zinc and 40% thiazole zinc were relatively low at 40.00% and 35.90%，respectively.Comprehensive analysis shows that 4% spring rapycin is the safest and has the best antibacterial effect in the growth period of pear trees.

References:

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Last Update: 2025-05-16