Effect of Rhizobium Inoculation, Farmyard Manure and Some Bio-Stimulants on Vegetative Growth Characteristics and Pod Yield of Broad Bean

Abstract

Two field experiments were carried out in a special farm at Shieba, Zagazig Center, Sharkia Governorate , Egypt during two successive winter seasons of 2023 – 2024 and 2024 – 2025 to study effect of rhizobium inoculation , organic fertilizer  (farmyard  manure)  and bio-stimulants such as dry yeast and seaweed extract  on the vegetative growth characteristics  and pod yield  of broad bean cv. El Kobrosy .

The experiment included 9 treatments where 3 main plot (control , rhizobium and farmyard manure) and 3 sub plot ( control , dry yeast and seaweed extract )

The layout of the experiment was laid out in split plot design with three replicates.

Results indicated that FYM treatment gave the highest values of vegetative growth of broad bean , i.e. plant height , number of leaves , number of branches , plant fresh weight and plant dry weight , as well as, on pod  yield and its components , i.e. pod length , pod diameter , pod weight , number  of pods / plant , number of seeds / pod  , seed weight / pod  and pod  yield  ( ton / fed ) . This treatment followed by the treatment of Rhizobium inoculation compared to control treatment .

Moreover, dry yeast extracts , being the most effective on growth parameters  and pod yield and its components of broad bean , followed by the treatment of seaweed extract compared to the control treatment . These results are true in both growing seasons .In addition, regarding to the interaction effect between FYM and dry yeast extract , being the most effective treatment in most cases , followed by  Rhizobium inoculation with dry yeast extract compared to the other treatments .

Conclusion:  It could be concluded that using Rhizobium inoculation , organic fertilizer  ( farmyard )  and bio-stimulants such as dry yeast and seaweed extract , which they are eco- friendly without pollution.to improve  the vegetative growth characteristics  and pod yield  of broad bean cv. El Kobrosy.