Orange tortrix on avocados: Pest becoming of increasing economic importance on certain varieties of avocado in some orchards in the coastal areas
Roy J. Pence
Authors AffiliationsWalter Ebeling is Professor of Entomology, University of California, Los Angeles; Roy J. Pence is Principal Laboratory Technician, Department of Entomology, University of California, Los Angeles.
Hilgardia 11(8):13-14. DOI:10.3733/ca.v011n08p13. August 1957.
The orange tortrix—Argyrotaenia citrana (Fernald)—was discovered to be doing a limited amount of damage to avocados in 1949, although it was known to be in California—primarily on citrus—as early as 1885.
Also in this issue:Agricultural marketing orders: Under enabling legislation California marketing programs now interwoven in economic structure of some of state's products
Ungrafted vineyard rootstock: Eradication of unproductive rootstock vines by treatment with chemicals tested in Sonoma and Santa Clara counties
Improved oat variety: Resistant to drought, shattering and stem rust, the new Indio shows promise
Lygus bug injury to carrot seed: Pest can cause 50% or more loss of carrot seed crop unless controlled by three properly timed 10% DDT dust applications
Effectiveness of wind machines: Frost protection by ramjet or conventional wind machines in deciduous orchards depends on the strength of the inversion
Worm infestation of tomatoes: Western yellow-striped armyworm on tomatoes controlled in second year of trials conducted in San Joaquin County fields
Harvester for canning fruit: Exploratory trials with cling peaches and Bartlett pears to evaluate feasibility of shaking fruit onto catching frame
Defoliation of hydrangea: Chemical defoliation of hydrangea plants obtained rapidly and without injury to flower buds by prestorage treatment
Ontogeny and structure of the phloem of tobacco
The multinucleate condition in fibers of tobacco
Morphological development of the fruit of the olive