EFFECTS OF SEED INOCULATION WITH PARARHIZOBIUM GIARDINII ENPV2 ON NODULATION, GROWTH, AND YIELD COMPONENTS OF COMMON BEAN (PHASEOLUS VULGARIS L.) CULTIVARS

Abstract

In the 2025 growing season, a field experiment was conducted at the University of Agronomic Sciences and Veterinary Medicine of Bucharest, Romania, to evaluate Pararhizobium giardinii (strain EnPv2) inoculation on three common bean cultivars: Algil, Florres, and Cannellino. Inoculation enhanced symbiotic performance and vegetative growth, increasing nodule number/plant by 70.33 %, green biomass by 27.23 %, and dry biomass by 30.54 % versus controls, with Algil exhibiting the highest response. While thousand-seed weight (TSW) showed a minor deviation (+1.96 %), inoculation markedly increased pods/plant (14.48 %), seeds/plant (14.99 %), and seed weight/plant (17.80 %). Consequently, average plot yield (14 m²) increased by 11.47 %, resulting in a 12.28 %/ha overall seed yield gain. Thus, Pararhizobium giardinii EnPv2 serves as an effective bio-inoculant for enhancing common bean productivity.