Caterpillar damage to tomatoes: Results based on one-year survey indicate no evidence of resistance to insecticides in nine commercial tomato fields
A. E. Micholbacher
Authors AffiliationsJohn Underhill is Farm Advisor, San Joaquin County, University of California; A. E. Michelbacher is Professor of Entomology, University of California. Berkeley.
Hilgardia 10(8):13-13. DOI:10.3733/ca.v010n08p13. August 1956.
Suspected resistance to DDD and DDT in controlling caterpillars attacking tomatoes—the corn earworm, in particular—was investigated in San Joaquín County during the 1955 season.
Also in this issue:Lemon Industry in California: New economic and technological developments create market interactions between fresh fruit and lemon products
Citrus rejuvenation studies: Three basic soil treatments used in orchard investigations to determine best conditions for root growth and development
Drift of 2,4-D applied by plane: Better knowledge of wind direction and velocity as factors in drift contributes to reduction in number of damage suits
Isopropyl available for citrus: Registration of the isopropyl ester specifically for use as plant growth regulator on citrus permits this form of 2,4-D
Temperatures and frost damage: Measurements of temperature inversions and blossom counts show extent of frost damage in tests in deciduous orchards
Plant response to polluted air: Specific effects of air pollutants on plants vary according to plant species and modifying internal and external factors
Nutrition of date seedlings: Glasshouse tests with Deglet Noor variety in sand and soil cultures indicate which nutrients best stimulate growth
Boron deficiency of grapes: Soil application at one ounce of borax per vine supplies enough boron for normal growth after midwinter pruning
Symptomatic and etiologic relations of the canker and the blossom blast of Pyrus and the bacterial canker of Prunus
Inheritance of resistance to powdery mildew in beans
Spotted wilt of the sweet pea