New mite predators: Four species from Guatemala show promise in southern California.
AuthorC. A. Fleschner
Author AffiliationsC. A. Fleschner is Associate Entomologist, University of California, Riverside.
Hilgardia 9(9):14-14. DOI:10.3733/ca.v009n09p14. September 1955.
The Guatemalan Stethorus—a small, black, lady beetle mite predator—is being propagated by the thousand in the insectary at Riverside for release in southern California avocado and citrus groves.
Also in this issue:Milk delivery costs and pricing: Adequacy in reflecting cost differences, simplicity in both application and enforcement vital factors in pricing systems
Use of pest control chemicals: Public law No. 518 effective July 22, 1955, of concern to all growers, shippers using pesticide chemicals on farm products
Minor nutrients of citrus: Effects of phosphorus fertilization on the minor element nutrition of citrus studied with three types of soil series
New soil fumigant: Increased growth of crop plants with weed killer of low toxicity to humans
Double-flowered column stocks: Genetic crossover responsible for breakdown in percentage of doubles produced by succeeding generations of parent variety
Verticillium wilt resistance: Strawberries resistant to verticillium wilt also show resistance to powdery mildew in plant disease studies
Almond varieties on plum roots: Plum rootstocks being tested for suitability to almonds in wet areas or in soils infected with oak root fungus
Effective use of living shade: Studies show how selection and location of trees and shrubs can reduce extremes of summer temperatures in living areas
Citrus collection for research: Citrus relatives, species, varieties, strains, and hybrids provide materials for research on problems of citriculture
Potassium and lemon fruit size: Larger sizes obtained in soil cultures when potassium was increased and calcium decreased in laboratory experiments
Factors influencing the effectiveness of sodium chlorate as a herbicide
The toxicity of sodium arsenite and sodium chlorate in four California soils