Walnuts in Southern California: Control of codling moth by treatment with new materials evaluated during 1952 season
J. C. Ortega, University of California
California Agriculture 7(6):6-6. DOI: 10.3733/ca.v007n06p6.
J. C. Ortega is Associate Specialist in Entomology, University of California, Riverside;
Not available – first paragraph follows:
DDT is the most effective and economically feasible material to use for the control of the codling moth on walnuts in southern California. It has been used successfully under a variety of conditions for a number of years in the field. At present there is no indication that the codling moth larvae are becoming resistant. DDT is compatible with all of the more effective aphicides and miticides recommended for use in walnut pest control.
The above progress report is based on Research Project No. 1419