Abstract
Extreme codling moth (Carpocapsa pomonella) conditions determine the true value of control suggestions in a short period of time. The proper use of arsenate of lead remains our most effective single control. Oil sprays in themselves are not a satisfactory control, but in certain combinations are of value. They complicate the spray residue problem and under many conditions are injurious to the fruit. Bait traps as a means of timing the application of sprays and the chemically treated bands are two of the most important recent developments. The use of the egg parasite, Trichogramma minutum Riley, has not shown a definite control under Colorado conditions. Unless more effective controls can be developed some fruit growing areas must be classed as marginal.
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