PROBLEM TO BE SOLVED: To provide: a herbicide that contains, as an active ingredient, pelargonic acid in which the main solvent is water and at the same time the existence form in water is acid and a herbicidal technology that simultaneously has a fast-acting property and residual effectiveness by using a mixed use of neutral or weak acidic glyphosate salts with pelargonic acid in which the main solvent is water and at the same time the existence form in water is acid.SOLUTION: Said emulsion having a stability and low viscosity is prepared by mixing pelargonic acid and a surfactant, and inorganic salt which is acidic or neutral in water, or organic acid salt and said herbicide having both fast-acting property and residual effectiveness is prepared by mixing pelargonic acid and a surfactant, and glyphosate salt which is acidic or neutral in water.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】 主溶剤が水であり、同時に水中における存在形態が酸であるペラルゴン酸を有効成分とする除草剤。及び、主溶剤が水であり、同時に水中における存在形態が酸であるペラルゴン酸に中性もしくは弱酸性のグリホサート塩類を混用して速効性と残効性を同時に有する除草技術を提供する。【解決手段】 ペラルゴン酸と界面活性剤、及び水に酸性もしくは中性の無機塩類、もしくは有機酸塩類を混合して安定で粘度の低い乳剤を調製する。また、ペラルゴン酸と界面活性剤、及び水に酸性もしくは中性のグリホサート塩類を混合して速効性と残効性を併せ持つ除草剤を調製する。【選択図】なし
