Confirmation of resistance Monochoria vaginalis (Burm. f.) C. Presl from West Java and Lampung Indonesia to bensulfuron-methyl herbicide
2021
Denny Kurniadie | Ryan Widianto | Dedi Widayat | Uum Umiyati | Ceppy Nasahi
Several national rice centers in Indonesia have used acetolactate synthase herbicide inhibitorsfor years, especially in several regions of Lampung and West Java provinces. Thispractice has led to the failure of the application of bensulfuron-methyl herbicide to controlMonochoria vaginalis (Burm. f.) C. Presl. The purposes of this study were to confirm thatthe failure of herbicide application in several areas of the provinces of Lampung and WestJava was caused by weed resistance, and to determine the level of resistance. A resistancetest of M. vaginalis was performed using the whole plant pot test method and split plotdesign with three replications. Monochoria vaginalis which indicated resistance was sampledfrom several regions, namely Sapto Mulyo, Ramadewa, Sarijaya, and Kalentambo. Thesusceptible samples of M. vaginalis as a control were taken from Cibodas and Sumberagung.The six levels of doses of herbicide bensulfuron-methyl used were: 0, 80, 160, 320,640 and 1,280 g ∙ ha–1. The experimental results show that M. vaginalis from Sapto Mulyo,Ramadewa,Kalentambo and Sarijaya was confirmed to have developed into weeds resistantto bensulfuron-methyl herbicide. Monochoria vaginalis from Saptomulyo, Kalentamboand Sarijaya were included in the high resistance category with a resistance ratio of morethan 12, while M. vaginalis from Ramadewa was included in the moderate resistance categorywith a resistance ratio of 9.39.
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