| 摘要 |
PURPOSE:To provide an insect pest-controlling agent having low toxicity against men and livestock, giving reduced residual toxicity and chemical damages for agricultural crops and further exhibiting stronger control activities against insect pests than those of conventional agents. CONSTITUTION:Citric acid and boric acid are added to a solution containing carboxymethyl cellulose to provide the insect pest controlling agent having the above-mentioned activities. In order to preserve the agent for a long period, the alcohol solution of butyl para-hydroxybenzoate may be dissolved in the carboxymethyl cellulose-containing solution in the presence of a surfactant, and further for the improvement in the dilution of the agent in water and in the adhesion of the agent to leaves on the spraying of the agent, a sorbitan fatty acid ester may be added. The insect pest controlling agent kills the insect pests by an action in which the carboxymethyl cellulose solution clogs the stomata of the insect pests due to the viscosity thereof to kill the insect pests by their asphyxiation, an insect pest-repellent action due to the acidic taste of the citric acid, the toxic action of the boric acid which is contained in the three-dimensional net structure of the carboxymethyl cellulose in the aqueous solution and which is eaten by the insect pests, etc. |
