EFFICACY OF CHARCOAL, ZEOLITE, AND BACTERIA RHIZOBIUM LEGUMINOSARUM ON THE GROWTH OF BROAD BEAN PLANT.

The experiment was conducted in the fields of the Agricultural Division - University of Kufa during the season 2022-2021 with the aim of studying the use of a Rhizobium leguminosarum inoculant enhanced with charcoal and zeolite for the purpose of producing an efficient bio-fertilizer and then using the resulting bio-fertilizer in an agricultural experiment.To know its effects on the soil and broad bean plant (faba L (Vicia), adding charcoal and zeolite to the bacterial inoculation used had a significant effect in increasing the concentration of nitrogen and phosphorous elements in the bean plant amounted to 51.5 g.kg-1,56g.kg-1,7.34g.kg -1, 8.3 g.kg-1 respectively, The addition of charcoal and zeolite led to a significant increase in the dry weight of vegetative growth, the dry weight of the root system, the dry weight of the root nodes and the number of root nodes. The level of adding 30gm of charcoal and 30gm of zeolite to the bacterial inoculation achieved the highest rate (63.00gm, 57.33gm, 32.0gm, 22.0gm, 82.67gm.plant-1,88.33g.plant-1,20.96mg.plant-1,22.62mg.plant -1),Also, treatments of 30 g of charcoal and 30g of zeolite were excelled in increasing the yield of broad bean plant, as it reached 7.565 tons ha-1,8.191 tons ha-1, respectively.