The herbicidal properties of boron compounds
AuthorsA. S. Crafts
R. N. Raynor
Authors AffiliationsA. 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.
Hilgardia 10(10):343-374. DOI:10.3733/hilg.v10n10p343. December 1936.
Abstract does not appear. First page follows.
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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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