Early sprays for mite control: European red mite on pear trees held in check by prebloom sprays until the summer treatment period
Harold F. Madsen, University of California
California Agriculture 9(2):4-15. DOI: 10.3733/ca.v009n02p4.
Abstract Not Available – First paragraph follows:
Control of European red mite—Metatetranychus ulmi Koch—is one of the major problems of pear and apple growers.
Harold F. Madsen is Assistant Entomologist, University of California, Berkeley.
The above progress report is based on Research Project No. 806.