Nitrogen trichloride and other gases as fungicides
AuthorL. J. Klotz
Author AffiliationsL. J. Klotz was Associate Plant Pathologist in the Citrus Experiment Station.
Hilgardia 10(2):27-52. DOI:10.3733/hilg.v10n02p027. January 1936.
Abstract does not appear. First page follows.
Obvious advantages are to be had in the use of a suitable gas for the control of fungi and insect pests on fruits in storage rooms and in cars during shipment. Application would be relatively simple and inexpensive; the material, because of its fluidity and diffusibility would, if aided by agitators, penetrate quickly to all exposed surfaces; and at the termination of the treatment, the gas could be readily eliminated by forced ventilation. Where tight refrigerator cars are used, it is possible that the fruit might remain in a low but effective concentration of the protective gas during shipment, assuring minimum losses from decay.
Nitrogen trichloride, the gas with which this report is chiefly concerned, is used extensively in the treatment of freshly milled flour in order to mature it quickly and induce desirable baking qualities. The suggestion that the gas might be used for the control of citrus pests was made several years ago when the Field Department Laboratory of the California Fruit Growers’ Exchange and the Wallace and Tiernan Products Company began a series of coöperative experiments. At that time tests were made to determine whether or not the gas would decrease losses from the most serious organisms of decay in citrus fruits, namely, blue and green molds, or Penicillium italicum and P. digitatum.
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Also in this issue:California egg buying systems: Factors affecting wholesale prices of eggs in principal markets influenced by dominant buying system of local area
Range grazing capacity raised: Program of seeding annual clovers, fertilization and grazing management resulted in improved forage quality and quantity
Rapid spread of alfalfa pest: Spotted alfalfa aphid infests about of state's alfalfa acreage within two years after its discovery in California
Removal of tinder in ponderosa: Prescribed burning of forest brush during the wet season by tested methods effectively reduces hazard of wildfire
Red mite on pears: New acaricides included in early spray tests for control of European red mite
Russet on bartletts: Pears from trees treated with copper or streptomycin equally free from russet
Codling moth on walnuts in '55: Downward trend in infestations of 1955 in northern California not uniform and need of control treatments in 1956 indicated
DDT residues on sweet corn: Kernels and cob of corn treated with DDT remain practically free of residues but amounts on plant restrict use as fodder
Zinc-deficient crops: Sweet corn, tomatoes, beans, and sugar beets used in tests for zinc deficiency