GB818925A - Compositions for controlling plant growth - Google Patents

Abstract

A plant growth controlling composition comprises an organoboron compound and a surface-active agent, or an inert solid or liquid non-solvent carrier, or a surface-active agent and an inert solid or liquid (including solvent) carrier, the organoboron compound being selected from a group consisting of halogen-, methyl-, halogenomethyl- or methoxy-substituted phenyl-boronic and diphenylborinic acids, the unsubstituted diphenylborinic acids, the anhydrides, esters such as those with monohydric or polyhydric alcohols and phenols, for example, ethanol, isopropanol, cyclohexanol, ethylene glycol and catechol, the esters with the alkanolamines, particularly ethanolamine and diethanolamine, salts and nitrogenous base, such as aliphatic primary, secondary and tertiary amines, for example n-butylamine, di-isopropylamine and triethylamine, and heterocyclic nitrogen compounds, preferably those containing aromatic type unsaturation such as pyridine and indolenine complexes of the boronic and borinic acids and the anhydride, esters and nitrogenous base complexes of the unsubstituted phenylboronic acid. The carrier may be solid, e.g. finely powdered talc, silica, carbon, clay, fuller's earth or kieselguhr which may be oil treated to improve adhesivity, or an organic liquid, which may contain an emulsifier, e.g. methanol, ethanol, isopropanol, secondary butanol, cyclohexanol, acetone, methyl isobutyl ketone, pyridine or a petroleum spray oil. Other pesticidal compounds and stickers may also be included. Specified compounds are 2-, 3- or 4-chlorophenyl boronic acid, 2- or 4-methoxyphenylboronic acid, di - (4 - chlorophenyl borinic acid, 3-azapentamethylene diphenyl boronate, 2-aminoethyl diphenylborinate, 2 - aminoethyl di (4 - chlorophenyl borinate, the di-isopropylammonium, pyridinium or indolinium complex of a phenylboronic acid or of a diphenylborinic acid. Specification 814,647,[Group IV (b)], is referred to.