1-substd phenyl biurets and thiobiurets plant growth

摘要

Plant growth regulators consisting of 1-substd. phenyl-biurets and thiobiurets where R = H, F or Me and X = O or S Growth promoting agents for plants, increasing the yield and size of fruits, e.g. grapes and cherries. Applied during the blossoming time in concns. of 500-1000 ppm. (1) By reaction of m-substd. anilines (II) with nitrobiurets (III) (2) Thiobiurets by reaction of m-substd. phenylisocyanates (IV) with thiourea (V).