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Critical Period of Weed Interference in Peanut

Published online by Cambridge University Press:  20 January 2017

Wesley J. Everman*
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695–7620
Scott B. Clewis
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695–7620
Walter E. Thomas
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695–7620
Ian C. Burke
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695–7620
John W. Wilcut
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695–7620
*
Corresponding author's E-mail: wjeverma@ncsu.edu

Abstract

Field studies were conducted near Lewiston–Woodville and Rocky Mount, NC to evaluate the effects of mixed weed species on peanut yield. A combination of broadleaf and grass weeds were allowed to interfere with peanut for various intervals to determine both the critical timing of weed removal and the critical weed-free period. These periods were then combined to determine the critical period of weed control in peanut. The effects of various weedy intervals on peanut yield were also investigated. The predicted critical period of weed control, in the presence of a mixed population of weeds, was found to be from 3 to 8 wk after planting (WAP). Peanut yield decreased as weed interference intervals increased, demonstrating the need for weed control throughout much of the growing season in the presence of mixed weed populations.

Information

Type
Research
Copyright
Copyright © Weed Science Society of America 

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