Orchard tests substantiate: Role of pear psylla in pear decline
C. Q. Gonzales, University of California
W. H. Griggs, Pomologist in the Experiment Station
D. D. Jensen, Entomologist in the Experiment Station
S. M. Gotan
California Agriculture 17(1):4-6. DOI: 10.3733/ca.v017n01p4.
C. Q. Gonzales is Assistant Research Entomologist in the Experiment Station, University of California, Berkeley; W. H. Griggs is Professor and Pomologist in the Experiment Station, U.C., Davis; D. D. Jensen is Professor and Entomologist in the Experiment Station, U.C., Berkeley; S. M. Gotan is Plant Pathologist, California Department of Agriculture, Sacramento.
Field scale tests with young pear trees last year at Davis provided further evidence that the pear psylla (Psylla pyricola Foerster) plays a central role in the pear decline disease.