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Efficacy of Foliar Applications of Trimax™ Insecticide during Water-Deficit Stress on the Physiology and Yield of Cotton

R.S. Brown, D.M. Oosterhuis, and E. Gonias

ABSTRACT

TRIMAX™ is a new insecticide from Bayer CropScience registered specifically for use in cotton. Research has shown that multiple application spray programs of Trimax, beginning early to mid-season, have resulted in enhanced yields, pest management and plant metabolism/health benefits. However, information is lacking on how Trimax effects plant growth and thereby enhances yield. It is hypothesized that the reported growth and yield advantage imposed by Trimax may be due, in part, to improved plant physiology, particularly under environmental stresses. To test this hypothesis, field studies were conducted in 2002 and 2003 at two test sites in Arkansas. Results from these studies have confirmed yield increases from multiple applications of Trimax. Furthermore, it appears that Trimax improves plant physiology, particularly during water stress, by activating enzyme defense systems, improving translocation and energy acquisition and maintaining cell integrity. The overall result is that the plant experiences less environmental stress, and growth and yields are enhanced.





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Document last modified 04/27/04