Codling moth on walnuts: Southern California studies of varying methods of DDT application
J. C. Ortega, Division of Entomology, Experiment Sfation, Riverside.
California Agriculture 2(7):4-14. DOI: 10.3733/ca.v002n07p4.
Not available – first paragraph follows:
Ordinary spray rig applications of DDT for control of codling moth on walnuts were given comparative tests against several other methods of application during the 1947 experimental program.
J. C. Ortega is Principal Laboratory Technician, Division of Entomology, Experiment Sfation, Riverside.