University of California

The herbicidal properties of boron compounds


A. S. Crafts
R. N. Raynor

Authors Affiliations

A. S. Crafts was Assistant Professor of Botany and Assistant Botanist in the Experiment Station; R. N. Raynor was Associate in the Experiment Station, Division of Botany.

Publication Information

Hilgardia 10(10):343-374. DOI:10.3733/hilg.v10n10p343. December 1936.

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In the field of chemical weed control there is a constant demand for a reagent that will render the soil permanently sterile, for use on graveled driveways, parking areas, railroad right of ways, and similar areas where any plant growth is a nuisance. Although arsenic has proved most effective (14)4 for this purpose, its use is always attended by a poison hazard. For this reason it seems desirable to find a soil sterilant that is nonpoisonous to man and animals. The known toxicity of boron compounds to plants suggests the possibility of their use for this purpose.

While it is recognized that toxic concentrations of boron occur in soils in certain regions in California and Nevada (19), (23), (32) and that the leaching of additional boron compounds into the underground waters in these regions is undesirable, there are large areas in these states, and others, where such a condition does not exist. In fact, as the data presented in this paper will show, one of the most promising uses for boron compounds is in the control of range weeds in the north-coast counties of California where the underground waters are not utilized for irrigation. It seems therefore that such materials may find extensive use in many places.

On the other hand, it is well to point out at the outset that wherever boron is present in toxic quantities in soils, and wherever crop plants may be affected, boron compounds should not be used in weed control.

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Crafts A, Raynor R. 1936. The herbicidal properties of boron compounds. Hilgardia 10(10):343-374. DOI:10.3733/hilg.v10n10p343

Also in this issue:

Lemon industry in California: Long-term projection of market potential for lemon juice products based on variable determinants of summer demand

Timing oil spray on valencias: Study indicates influence of application timing on effect of pest control oil spray on yield and juice of Valencias

Spread of tristeza on citrus: Melon aphid relatively inefficient carrier of quick decline virus but at its height can ruin orchard in about five years

Growth regulators on apricot: Seeds from apricot trees treated with growth regulators are inhibited in germination and any seedling growth is abnormal

Soil fungi and seedling growth: Citrus tree growth and soil population relationships being studied in series of greenhouse tests underway at Riverside

Parasites of alfalfa aphid: Natural enemies of spotted alfalfa aphid found in search of Europe and Middle East may become established in California

Range rodent control by plane: Cereal bait scattered by plane at rate of one pound or less per acre prior to seeding effectively controls range rodents

Application of meat tenderizer: Precooking holding periods for beef treated with tenderizers using papain as the activating agent found to be unnecessary

Performance of crossbred ewes: Study made of four types of first-cross ewes to evaluate use of rams of medium-wool, dual-purpose breeds for replacements

Potato hair sprout: Disorder of potatoes causes problem for processors and seed producers

Some effects of thallium sulfate upon soils

Toxicity of arsenic, borax, chlorate, and their combinations in three California soils

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