Worm infestation of tomatoes: Western yellow-striped armyworm on tomatoes controlled in second year of trials conducted in San Joaquin County fields
AuthorsJohn P. Underhill
A. E. Michelbacher
Authors AffiliationsJohn P. Underhill is Farm Advisor, San Joaquin County, University of California; A. E. Michelbacher is Professor of Entomology, University of California, Berkeley.
Hilgardia 11(8):10-10. DOI:10.3733/ca.v011n08p10. August 1957.
A caterpillar control program in nine commercial tomato fields—in San Joaquin County in 1956—repeated the successful trials in 1955 because of reports of suspected resistance of the corn ear-worm to DDD and DDT.
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
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
Orange tortrix on avocados: Pest becoming of increasing economic importance on certain varieties of avocado in some orchards in the coastal areas
Ontogeny and structure of the phloem of tobacco
The multinucleate condition in fibers of tobacco
Morphological development of the fruit of the olive