An adjuvant composition contains an adjuvant composition, comprising, based on 100 parts by weight of the composition: (a) from about 10 to 100 parts by weight of a combined of one or more betaine surfactants and one or more glycoside surfactants, comprising, based on 100 parts by weight of the combined amount: (i) from greater than 0 to less than 100 parts by weight of the one or more betaine surfactants, and (ii) from greater than 0 to less than 100 parts by weight of one or more glycoside surfactants, and (b) from 0 to about 90 parts by weight water A pesticide composition contains based on 100 parts by weight of the composition: (a) from greater than 0 parts by weight to about 20 parts by weight of a combined amount of one or more betaine surfactants and one or more glycoside surfactants, comprising, based on 100 parts by weight of the combined amount: (i) from greater than 0 to less than 100 parts by weight of the one or more betaine surfactants, and (ii) from greater than 0 to less than 100 parts by weight of one or more glycoside surfactants, and (b) from 0 to about 90 parts by weight water, and (c) an effective amount of one or more pesticides. A method for controlling the growth of a target plant includes applying the pesticide composition to the target plant.