Leaf inoculation of Azospirillum brasilense and Trichoderma harzianum in hydroponic arugula improve productive components and plant nutrition and reduce leaf nitrate

ABSTRACT Using beneficial fungi and bacteria to plant growth may reduce the leaf nitrate content improve quality of produced food. This study aimed evaluate isolated combined effect inoculation with Azospirillum brasilense Trichoderma hazianum at two electrical conductivities on nutrition production hydroponic arugula cultivation. The experiment was designed in randomized blocks, a 4 x 2 factorial scheme, five replications. treatments consisted inoculations (non-inoculated, A. brasilense, T. harzianum co-inoculation) (1.4 1.6 dS m-1). higher root fresh mass, while chlorophyll index concerning other treatments. reduced leaves. co-inoculation improved yield components nutrition, promoted biofortification leaves Zn Fe. In addition, increased P S content.