Abstract: The present invention is an evaporation inhibitor for plant treatment agents composed of at least one compound selected from (A1) a compound obtained by adding a predetermined amount of at least one alkylene oxide (hereinafter referred to as AO) selected from ethylene oxide (hereinafter referred to as EO) and propylene oxide (hereinafter referred to as PO) to a predetermined alcohol, (A2) a compound obtained by adding a predetermined amount of at least one AO selected from EO and PO to a predetermined carboxylic acid, (A3) a compound obtained by adding a predetermined amount of at least one AO selected from EO and PO to a monoester of a fatty acid with 10 or more and 20 or less carbons and sorbitan, (A4) a polyalkylene glycol with a weight average molecular weight of 100 or more and 3000 or less, (A5) a predetermined ester compound, and (A6) a predetermined carboxylic acid.

Abstract: The present invention is a herbicide composition containing the following components (A), (B) and (C), wherein a mass ratio between the content of component (B) and the content of component (C), (C)/(B), is 0.010 or more and 0.

Abstract: The present invention is a herbicide composition containing the following components (A), (B) and (C), wherein a mass ratio between the content of component (B) and the content of component (C), (C)/(B), is 0.010 or more and 0.18 or less: component (A): a compound selected from glufosinate and a salt thereof; component (B): a compound represented by the following general formula (B-I): R1O(R2O)nSO3?M30??(B-I) wherein R1 is a hydrocarbon group with 8 or more and 24 or less carbons, R2 is an alkanediyi group with 2 or more and 4 or less carbons, n is an average number of added moles and 0 or more and 30 or less, and M+ is a counter ion; and component (C): an aromatic sulfonate salt having an aliphatic hydrocarbon group.

Abstract: A herbicide composition excellent in herbicidal effect and a weeding method using the herbicide composition, and a herbicidal efficacy enhancing agent composition capable of increasing the herbicidal effect are provided. A herbicide composition containing the following components (A) to (C), wherein a mass ratio of the content of component (B) to the content of component (C), (B)/(C), is 0.25 or more and 0.6 or less: component (A): an agrochemical active ingredient of an amino acid-based herbicide; component (B): a particular polyoxyalkylene alkyl or alkenyl amine or an acid salt thereof; and component (C): a particular polyoxyalkylene alkyl or alkenyl ether.