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Weed Science September 2019

Protoporphyrinogen Oxidase (PPO) Inhibitor–resistant Waterhemp (Amaranthus tuberculatus) from Nebraska is Multiple Herbicide Resistant: Confirmation, Mechanism of Resistance, and Management

On the Cover: Four-way resistance (PPO, ALS, PS II, and EPSPS inhibitors) was confirmed in a waterhemp biotype collected from a soybean production field in eastern Nebraska (insets on left showing dose-response to different herbicides); the DG210 mutation conferring PPO-inhibitor resistance was confirmed using a Kompetitive Allele Specific PCR (KASP) assay.

Debalin Sarangi, Trey Stephens, Abigail L. Barker, Eric L. Patterson, Todd A. Gaines and Amit J. Jhala. September 2019. Protoporphyrinogen oxidase (PPO) inhibitor-resistant waterhemp (Amaranthus tuberculatus) from Nebraska is multiple herbicide resistant: confirmation, mechanism of resistance, and management. Weed Science 67(5), pp. 510-520.

Debalin Sarangi is a postdoctoral research associate; Trey Stephens is a graduate student; and Amit J. Jhala is an associate professor, all in the Department of Agronomy and Horticulture.

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