Two field experiments were carried out during the winter seasons of  2008/09 and 2009/10 at farm in Disuq district, Kafr El-Sheikh Governorate to investigate the response of pea plants, cv. Master B, to inoculation with biofertilizer (Halex-2) and different concentrations with boron (0, 5, 10 and 15 ppm) as a foliar application. The results indicated that inoculation of pea seeds with biofertilizer (Halex-2), improved most vegetative characters, as well as green pods yield and its components, shelling ratio, seed yield and its components, seed germination percentage, leaf contents of chlorophyll and seed content of protein. Increasing boron concentration up to 10ppm was accompanied with significant increases in vegetative growth characters, as well as green pods yield and its components, shelling ratio, seed yield and its components, seed germination percentage, leaf contents of chlorophyll and seed content of protein. The highest boron concentration at 10ppm combined with Halex-2 biofertilizer appeared to be the most efficient treatment for more vigorous growth, green pods yield and its components, shelling ratio, seed yield and its components and seed germination percentage, as well as chlorophyll contents in leaves and protein content in seeds.