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The Use of Telone in Cotton Production in Louisiana

Charles Overstreet and Terry L. Erwin

ABSTRACT

High populations of nematodes have made it necessary to look at alternative methods of management rather than just the standard nematicide Temik 15%G applied at 3.5-5.0 lbs/a. Telone at the use rate of three gallons/a was evaluated as a supplemental nematicide to these standard rates primarily in reniform fields (14 tests) with one in a root-knot field in trials conducted from 1997-2002. Telone was primarily applied as a spring treatment (14 tests) and one fall test. When all the trials were combined, the addition of Telone gave an average yield increase of 196 pounds of seed cotton compared to the standard Temik 15%G at 3.5-5 lbs./a. Weather was a dominant factor in a number of these tests. Eight of the tests were conducted under fairly normal conditions and Telone gave an average of 341 lbs./a increase over Temik 15%G alone. Seven tests were subjected to adverse conditions (excessive rainfall from Tropical Storms or Hurricanes). The difference between the combination of Telone and Temik 15%G and the Temik alone was only 31 lbs./a in these tests. Mid-season levels of reniform nematode were significantly lower when Telone was applied but no differences by the end of the growing season.





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Document last modified April 16, 2003