Systemic pesticides on walnut: Preliminary studies promising for control of European red mite and walnut aphid in southern California
J. C. Ortega, University of California
California Agriculture 7(10):10-11. DOI: 10.3733/ca.v007n10p10.
J. C. Ortega is Associate Specialist in Entomology, University of California, Riverside.
Not available – first paragraph follows:
European red mite and walnut aphid in the cool coastal regions of southern California may cause a premature dropping of walnut leaves, predisposing the nuts to sunburn injury and lowering the quality of the nut meats.
The above progress report is based on Research Project No. 1419.