The study was designed to determine the effect of bacterial fertilizer (Rhizobium Leguminosarum), hulls of rice crop, and urea fertilizer on the growth and yield parameters of the broad bean crop (Vicia faba L.). The experiment was conducted during the agricultural season 2021 in the Al-Daghara district, 17 km north of the center of the Al-Diwaniyah Governorate. Two levels of Rhizobium Leguminosarum bacteria (R0) control and (R1) bacterial application, three levels of organic fertilizer (rice hulls) (S0, S3, and S5) mg/ha, and three levels of urea fertilizer (U0, U50, and U75) kg N .ha-1 and their overlap. The results of the statistical analysis present that the interaction treatment (R1 + S5 + U75) resulted in the highest values for the parameters of plant height, dry weight of the vegetative part and dry weight of the root system, and total yield, which were 72,163 cm/Plant-1, 10,685 g/plant-1/dry weight, 5.867 g/plant-1, 10,985 mg/ha.

The study aimed to determine the influence of biological inoculation and organic fertilizer on the availability of nitrogen, phosphorous, and potassium (N.P.K.) in protected tomato soil. During the 2021 agricultural season, the experiment was conducted in greenhouses in the Al-Azzawiya area / Babylon Governorate (longitude 44.5E and latitude 32.7N). Bacterial bio-inoculum was used and compared with the control (S0 and S1), three levels of compost (C0, C1, C2) tons.ha-1, and three levels of organic fertilizer Humus (H0, H1, H2) and the interaction between them in nitrogen, phosphorous, and potassium were used. The results of the statistical analysis resulted in higher values of the triple interaction treatment (S1 + H2 + C2) than the control by giving it the highest mean concentration of available nitrogen, phosphorous, and potassium in the soil (48.70, 19.71, 255.33) mg.kg-1.soil for each, respectively.