The value of Trichogramma Minutum for control of sugarcane borer has been studied in the field since September, 1925, and under Louisiana conditions has been found to be the most effective natural control factor, especially during August, September, October and November. A method for laboratory production and increase has been devised, and in June and July 1927 a small scale colonization experiment was apparently successful. Details of rearing technique and plans for 1928 work on a larger scale are discussed.