The main purpose of this study is to test the effect of biofertilizer of plant origin «Nettle manure» on agronomic and biochemical parameters of a green bean variety «Phaseolus vulgaris L. » grown under greenhouse. To achieve this, four foliar doses of biofertilizer (0% control, 5% 10% and 15%) were sprayed at different stages of crop development. Tested parameters were: height of plants, root length, number and weight of pods per plant, seeds weight per pod, as well as the amounts of chlorophyll (a), chlorophyll (b) and total chlorophyll (a+b) and total soluble sugars. The analysis of variance showed that there were significant differences between the four doses of biofertilizer for all the studied traits except the height of plants and the number of pods per plant. Whatever the studied traits, the concentration of 10% had given the most significant effect.