Effect of Bacillus megaterium, Vermicompost, and Phosphate on the yield of sunflower (Helianthus annuus L.) on N.P.K. content of the leaf.

Document Type : Primary Research paper


College of Agriculture, Al-Qadisiyah University, Iraq


Aiming to investigate the interaction between Bacillus megaterium and vermicompost and three levels of phosphate rock fertilizer 0, 100, and 200 kg.K.ha-1 on the growth and yield of sunflowers, this field experiment was carried out. The results present that inoculation with Bacillus megaterium and vermicompost bacteria singly or double produced a significant increase in (nitrogen, phosphorous, and potassium in the plant and total yield) compared to the control. The application of bacterial and organic inoculum and rock phosphate fertilizer at the level of 100 kg.K.ha-1 (3.112, 0.459, 3.528, and 2808) resulted in the highest values of the studied traits, respectively, compared to the control.