Basf Aktiengesellschaft

Volker Fischer

Johann Jung

Henning Rosebrock

Helmut Hagen

Wilhelm Rademacher

Rolf-Dieter Kohler

Juergen Markert

Eberhard P Schott

Max Luib

Akihide Watanabe

The development of crops is influenced by means of one or more 7-chloroquinoline-8-carboxylic acids of the general formula ##STR1## where R is fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl.

Influencing the development of crops with 7-chloroquinoline-8-carboxylic

A process for regulating plant growth, wherein the plants, the seed or the soil are treated with a polycyclic nitrogen-containing compound of the formula ##STR1## R.sup.2 is --N.dbd.N-- or --NH--NH, and R.sup.3 is ##STR2## or phenyl which is substituted by halogen, fluoroalkyl of 1 to 2 carbon atoms, NO.sub.2 or C.sub.1 -C.sub.3 -alkyl, the equivalent of less than 100 g of active ingredient being employed per hectare.

Influencing plant growth

Growing community of inventors

Munich, Georgia

Volker Fischer