The invention relates to the use of defined alkoxylates of the amphiphilic type as activity-improving adjuvants in the agrotechnical field. The invention also relates to corresponding agrotechnical agents. The addition of such alkoxylates enables the absorption of active ingredients by plants to be accelerated. The alkoxylates used are based on branched alcohols such as 2-propylheptanol, C13-oxoalcohols and C10-oxoalcohols.Use of certain alkoxylates as an adjuvant for agrotechnical applications The present invention relates to the use of specific amphiphilic alkoxyates as synergistic adjuvant for agrotechnical applications. Suitable agrotechnical compositions are also described. Thus, the addition of such alkoxylates makes possible an accelerated uptake of active ingredients by the plant.