Use of fused ring cyclopentanones and cyclopentenones in controlling plant growth

摘要

Use in inhibiting plant growth of a compound of formula IIin which either the pair of symbols X and Y or the pair of symbols Y and Z, together with the carbon atoms to which they are attached, form a non-aromatic ring system having either 5 or 7 ring atoms, all of which are carbon except that one may be oxygen, and which is substituted or unsubstituted, R1 represents a hydrogen atom or an alkyl, alkenyl or a substituted or unsubstituted phenyl group and R2 represents a hydrogen atom and R3 an alkyl carboxyalkyl group or R2 and R3 together form a double bond, and thereafter any unsatisfied valencies of ring carbon atoms of the ring shown in formula II are satisfied by hydrogen atoms.