Natural control of the cotton fleahopper, Pseudatomoscelis seriatus (Reuter) (Hemiptera, Miridae), in Texas
1989
Breene, R. G. | Hartstack, A. W. | Sterling, W. L. (Winfield Lincoln) | Nyffeler, M.
The population dynamics of the cotton fleahopper, Pseudatomoscelis seriatus (Reuter), on cotton was predicted using the Texas Cotton Insect Model (TEXCIM) and compared with observed field data from east Texas. The presence of natural enemies and their estimated rate and efficacy of fleahopper consumption were used to calibrate the model to east Texas conditions. A correcting equation was incorporated into the model to account for fleahopper mortality due to rain. Current economic thresholds for cotton fleahoppers were used to determine the frequency of correct decisions made by the model. TEXCIM was free of type I and type II errors in 93% of 71 sampling periods compared with a previous rate of 86% in 57 sampling dates in an earlier version of TEXCIM. Cotton producers may now use either traditional chemical control or monitoring and conserving natural enemies to maximize profits.
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