The Use of Boll Weevil Bait Sticks in Nicaragua in 1993

Gerald H. McKibben, Rainer Daxl, James W. Smith


About 80% of the insecticide applications used on cotton in Nicaragua have historically been for the cotton boll weevil, Anthonomus grandis (Boheman), which is the key pest on cotton in that country. In recent years the total number of insecticide applications on cotton in Nicaragua has averaged 20 to 30 per field per year. The commercially available bait sticks were used around all cotton fields in Nicaragua in 1993. They were placed about 130 ft apart and were applied 30 days before planting, at planting, and 30 days after planting. Evaluation was done on the basis of trap captures, number of insecticide applications made by the grower, and regular fruit damage counts. After 80 days into the crop, there had been very few or no insecticide applications made for the boll weevil on any farms in Nicaragua, and an average of only four applications for other insects. Normally, several treatments for the boll weevil would have been made by this time. The yield potential appears to be normal. While it is difficult to quantify the contributions of the various factors responsible for the apparent lack of a boll weevil problem in Nicaragua in 1993, the use of the bait sticks appeared to be a major factor.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 984 - 986
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998