ABSTRACT
Producing profitable dryland cotton has become increasingly difficult due to the resurgence of the boll weevil across Oklahoma. Several management strategies were employed in May and June-planted cotton to determine the impact on boll weevil infestations and lint production in 1997 and 1998. Boll weevil numbers varied greatly between years; high weevil numbers occurred in 1997 compared to low weevil emergence in 1998. May-planted cotton, regardless of the management strategy, out-produced June-planted cotton for both years. In 1997, profits ranged between $36.78 to $193.31 / acre for the May 13th planting compared to $ 3.81 to $42.43 / acre for the June 6th planting . Overwintering sprays were of more importance in the May 13 planting ($151.98) than the June 6th planting ($3.61). Full season control provided the greatest return for both planting dates: May 13th -- $193.31 / acre and June 6th $42.43 / acre. In 1998, applying overwintering sprays to delay or prevent boll weevil damage did not enhance yields or monetary returns for both planting dates. Greatest return per acre resulted in the untreated plots for both planting dates emphasizing the need to base spray decisions on trapping indexes and field scouting throughout the growing season. To enhance profitability producers should strive to plant in May and scout fields regularly basing insecticide applications accordingly.
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