5-Substituted 4-methyl-5H-indeno 1,2-b pyridines and 9-substituted 1-methyl-9H-indeno 2,1-c pyridines, their preparation and use as herbicides and plant growth regulators

摘要

PCT No. PCT/EP94/00071 Sec. 371 Date May 12, 1995 Sec. 102(e) Date May 12, 1995 PCT Filed Jan. 12, 1994 PCT Pub. No. WO94/17044 PCT Pub. Date Aug. 4, 1994A method for controlling undesired plant growth and for regulating plant growth by allowing 4-methyl-5H-indeno[3,2-b]pyridines and 1-methyl-9H-indeno[2,3-c]pyridines of the general formula I IMAGE I where X, Y, Z and the radicals R1 to R5 have the meanings as described in the specification, to act on the plants, and novel 4-methyl-5H-indeno- [3,2-b]pyridines and herbicides and plant growth regulators containing these.