Distribution and Effect of Petroleum Oils and Kerosenes in Potato, Cucumber, Turnip, Barley,
نویسنده
چکیده
Petroleum-oil sprays and fogs are used increasingly to control insect pests of economic plants. These oils are useful in controlling the aphid vectors of potato virus, but it is first necessary to learn which oils are tolerated by potato leaves. Hence, undiluted oils and cresoap emulsions of petroleum oils were tested on potato leaves to determine: (1) The rates of oil penetration into leaves; (2) the symptoms caused by the oils; (3) the oils and their concentrations that potato leaves tolerate without necrosis; and (4) a rapid, easy, accurate method for predicting the probable injury that an oil spray will cause in potato leaves. The purpose of these and other experiments was to discover the distribution and effect of petroleum oils in species of herbaceous plants treated with sprays or undiluted lubricating oils or kerosenes.
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