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Influence of Metolachlor on Sweet Corn (Zea mays saccharata) Growth and Nutrient Accumulation

Published online by Cambridge University Press:  12 June 2017

Tamsey W. Ellis ,
Henry P. Wilson ,
Martin P. Mascianica  and
Keith A. Janssen
Tamsey W. Ellis
Affiliation:
Dep. Biol., Old Dominion Univ., Norfolk, VA 23508
Henry P. Wilson
Affiliation:
Virginia Truck and Ornamentals Res. Stn., Painter, VA 23420
Martin P. Mascianica
Affiliation:
Virginia Truck and Ornamentals Res. Stn., Painter, VA 23420
Keith A. Janssen
Affiliation:
Virginia Truck and Ornamentals Res. Stn., Painter, VA 23420
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Abstract

Using nutrient culture techniques, it was determined that a 14-day exposure to metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] concentrations in the range of 10-6 M reduced lengths and weights of seedling sweet corn (Zea mays saccharata L. ‘NK-199′) shoots and roots by 30 to 50%. With the exception of root weight, intensity of inhibition was proportional to day length. Reductions in accumulation of Ca, Mg, K, and P accompanied decreases in sweet corn growth. A 4-day exposure of sweet corn to 2.8 and 5.6 × 10-6 M metolachlor had no significant effect on growth and nutrient accumulation when treatments were followed by a 9-day incubation in metolachlor-free nutrient solution.

Keywords

Calciummagnesiumphosphoruspotassiumday length
Type
Research Article
Information
Weed Science , Volume 31 , Issue 3 , May 1983 , pp. 342 - 347
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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