Effect of Azospirillum spp. and Azotobacter spp. on the growth and yield of strawberry (Fragaria vesca) in hydroponic system under different nitrogen levels

1 Department of Life Sciences, Universidad de las Fuerzas Armadas-ESPE, SangolquiPOBOX: 171-5-231B, Quito, Ecuador, South America. 2 Department of Biotechnology, Universidad de las Americas UDLA, Quito, Ecuador. 3 Department of Zoology, University of Pune, Pune, India. 4 Department of Environmental Engineering, Universidad Estatal Amazonica, Puyo, Ecuador. 5 Loyola ICAM College of Engineering and Technology (LICET), Loyola campus, Chennai, India.