University of Nebraska—Lincoln Extension GWC9 Biology and Management of Horseweed

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GWC-13 Biology and Management of Waterhemp

The Glyphosate, Weeds and Crops Series

Biology and Management of Waterhemp

GWC 13

Waterhemp is most common in the Midwest, but is found from Texas to Maine, write the authors of this new extension publication. “A number of factors — reduced tillage systems, herbicide-resistant biotypes, and simplified weed management systems — contributed to the rise of waterhemp problems in the late 1980s and early 1990s. The 1996 introduction of Roundup Ready® soybean helped many farmers regain control of waterhemp; however, this weed possesses many traits that continue to make it a formidable foe in any management system.”

This publication addresses the identification, emergence pattern, biology and some characteristics of waterhemp that make it a particular problem for agronomic cropping systems and provides management recommendations for its control. It was written by Extension specialists from the universities of Illinois, Iowa State and Missouri and reviewed by a national team of Extension specialists. It was published by Purdue University as part of the Glyphosate, Weeds and Crops Series.

To orderBiology and Management of Waterhemp (GWC13) is available from your local UNL Extension office or from the UNL Extension Publications Warehouse. In addition, a pdf copy is available on the Purdue University Extension Web site. Cost is $3.

Extension is a Division of the Institute of Agriculture and Natural Resources at the University of Nebraska–Lincoln cooperating with the Counties and the United States Department of Agriculture.

University of Nebraska–Lincoln Extension educational programs abide with the nondiscrimination policies of the University of Nebraska–Lincoln and the United States Department of Agriculture.