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Agronomy Journal Abstract -

Effect of Repeated Annual Use of Atrazine on Corn1

 

This article in AJ

  1. Vol. 61 No. 2, p. 297-299
     
    Received: Aug 19, 1968


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doi:10.2134/agronj1969.00021962006100020036x
  1. O. C. Burnside,
  2. G. A. Wicks and
  3. C. R. Fenster2

Abstract

Abstract

Normal use rates of atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) for weed control in corn (Zea mays L.) applied for 3 consecutive years at three locations across Nebraska had no significant effect on corn yield or eight other corn yield components. Annual application rates of 9 kg/ha of atrazine during 1963–1965 caused a 21, 23, and 2% corn yield reduction in 1965 at Alliance, North Platte, and Lincoln, respectively. Generally there is a wide margin of safety when using atrazine to control annual weeds in corn.

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