Control of pear psylla: With oils and oil-pyrethrins
AuthorsH. F. Madsen
P. H. Westigard
Authors AffiliationsH. F. Madsen is Associate Professor and Associate Entomologist in the Experiment Station, University of California, Berkeley;; P. H. Westigard is Assistant Entomologist, Oregon State University, formerly Junior Research Entomologist in the Experiment Station, University of California, Berkeley.
Hilgardia 17(1):9-10. DOI:10.3733/ca.v017n01p9. January 1963.
Oil sprays show promise for pear psylla control, but the addition of pyrethrins offers little advantage.
Madsen H, Westigard P. 1963. Control of pear psylla: With oils and oil-pyrethrins. Hilgardia 17(1):9-10. DOI:10.3733/ca.v017n01p9
Also in this issue:Characters, distribution, and food plants of phlepsid leafhopper vectors of California aster-yellows virus
The relation of pear psylla to pear decline … greenhouse tests
Orchard tests substantiate: Role of pear psylla in pear decline
Pear psylla: In abandoned orchards
Phytotron modification: Admits more sunlight through plastic panels
Vetch green manure increases rice yields: …Proper depth and timing of incorporation allows maximum results
Granulated insecticides superior to sprays for: Alfalfa weevil control
Field maturity—seed yield—shatter loss for: Potomac orchardgrass and hardinggrass
Evidence of nonspecific transmission of California aster-yellows virus by leafhoppers