| Autor: |
Newkirk, T., Bateman, N. R., Thrash, B. C., Felts, S. G., Plummer, W. A., Ibbotson, T., Floyd, C. A., Whitfield, A., Murray, Z., Maris, P. G., Davis, T. |
| Předmět: |
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| Zdroj: |
B.R. Wells Rice Research Studies - Arkansas Agricultural Experiment Station, University of Arkansas System; Aug2023, Issue 696, p98-102, 5p |
| Abstrakt: |
Rice stink bugs (RSB) are a major pest of rice after panicle emergence in Arkansas. Pyrethroids, particularly lambdacyhalothrin (lambda), have been the primary insecticide used to control RSB for the past 15 years. Recently, there have been increasing concerns of potential pyrethroid resistance. Lambda control failures have been documented in Arkansas in late-season RSB populations since 2019. Populations of RSB's were collected in May, June, July, and August throughout the state in 2021 and 2022. Lambda was applied to petri dishes at multiple rates to determine the efficacy of RSB. Fiftyfour collections were made throughout 2021 and 2022. Over the fifty-four populations that were sampled, percent mortality ranged from 66% to 68% between the 1x and 4x rates of lambda. Slightly higher mortality was observed in May as compared to the other months collections were made. These preliminary results indicate that pyrethroid insecticide resistance may become an increasing problem in Arkansas, and future management strategies need to be evaluated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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