University of California

New soil fumigant: Increased growth of crop plants with weed killer of low toxicity to humans


Jack L. Bivins
Anton M. Kofranek

Authors Affiliations

Jack L. Bivins is Farm Advisor, Santa Barbara County, University of California; Anton M. Kofranek is Assistant Professor of Floriculture, University of California, Los Angeles.

Publication Information

Hilgardia 9(9):6-6. DOI:10.3733/ca.v009n09p6. September 1955.

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A new soil fumigant—vapam—proved to be an effective weed killer in column stocks—Matthiola incana—in Santa Barbara County tests conducted during the fall and winter of 1954–55.

Bivins J, Kofranek A. 1955. New soil fumigant: Increased growth of crop plants with weed killer of low toxicity to humans. Hilgardia 9(9):6-6. DOI:10.3733/ca.v009n09p6

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

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

New mite predators: Four species from Guatemala show promise in southern California.

Factors influencing the effectiveness of sodium chlorate as a herbicide

The toxicity of sodium arsenite and sodium chlorate in four California soils

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