Bartlett pears—in a Placer County foothill orchard and in a Sacramento Valley orchard—were equally russeted in 1954, whether they developed on trees dusted with copper, sprayed with streptomycin, or given no blight control treatment during the blossoming period.

The above progress report is based on Research Project No. 1450.

F. M. Summers, Associate Professor of Entomology, University of California, Davis, made the examination for insects which might account for russeting.