Corn earworm in grain sorghum phosdrin and thiodan: Show promise as substitutes for DDT in two experiments with aerial applications to infested fields
AuthorsOscar G. Bacon
Morton D. Morse
Robert L. Sailsbery
Authors AffiliationsOscar G. Bacon is Associate Professor of Entomology, University of California, Davis; Raymond Miskus is Laboratory Technician in Entomology, University of California, Berkeley; Morton D. Morse is Farm Advisor, Butte County, University of California; Robert L. Sailsbery is Farm Advisor, Glenn County, University of California.
Hilgardia 13(8):12-13. DOI:10.3733/ca.v013n08p12. August 1959.
Damage to grain sorghum by the corn earworm–Heliothis zea (Boddie) –has been especially severe in Butte and Glenn counties. Certain fields examined in 1957 and 1958 showed 90%-99% of the heads to be infested. Usually 1–4 larvae per head were found although some heads had 10-16 larvae.
Also in this issue:Irrigation districts: Payment complex of land assessment and water tolls key tool for pricing policy
Frost protection in peaches: New model under-tree wind machine tested with and without burners in orchard near Wheatland during winter of 1958–59
New winter rye: Productive winter annual cereal grain has high fertility in California tests
High phosphorus for alfalfa: Plant analysis used to evaluate phosphorus status of alfalfa fields as guide to fertilizing for better yields and returns
Lime effect on soil properties: Studies made on the effect of massive lime applications on physical properties of five types of Sacramento Valley soils
Rice water weevil: Beetle pest in rice growing areas of southern states discovered in California
Strip-treatment with chemicals: Satisfactory commercial control achieved in orange orchard program designed to conserve natural enemies of citrus pests
Subtropical insects: Reference on subtropical fruit pests and control measures now in one volume
Inclusions in guard cells of tobacco affected with mosaic
Phloem anatomy of tobacco affected with curly top and mosaic