Reproduction parameters (number of Flowers, number of pods, pod fresh and dry weight, content of Flower-induction (Phenylpropanoid) chlorogenic acid (CGA) of french bean plants supplemented with 0.5 ug.g^-1 and 2.5 ug.g^-1 of metribuzin either alone or incombination with 50 ug.g^-1 NaCl, were increased significantly, whereas 5 ug. g^-1 and 10 ug.g^-1 of metribuzin either alone or in combination with 50 ug. g^-1 NaCI, gave rise to significant decrease in all reproduction parameters. CGA administration to such media induced significant increases in all reproductive parameters determined. On the other hand, CGA content of french bean plants treated with 5 ug. g^-1 CGA showed significant increase at 0.5 and 2.5 ug. g^-1 metribuzin either alone or in combination with NaCI whereas 5 ug.g^-1CGA administered to  5 and 10 ug. g^-1 metribuzin alone or incombination with NaCl a significant decrease in CGA content was apparent at either flowering or fruiting stages.