A simple and rapid quantitative method for the determination of small amounts of 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous solution is described. This method is based on the activity of the acid in inhibiting the growth of the primary root and shoot of germinating cucumber seed. It is sensitive to 0.005 p.p.m, and is applicable from this concentration to 5.0 p.p.m. Initial surface sterilization of the seed, selection of pregerminated seed of certain root lengths, and special equipment are not necessary.
No takes yet. Share an insight, caveat, or question.
Ready et al. (1947) studied this question.