Effect of spraying with nano iron oxide and vitamin B3 on vegetative growth characteristics and mineral content of basil plant Ocimum BasilicnmL

The experiment was conducted in the shade of Department Life Sciences, College Education for Girls, Tikrit University, during 2021 agricultural season. It implemented as a factorial according to RCBC randomized complete block design, which included two factors, first factor being Nano iron oxide four concentrations (20,80,40.0 mg, L-1). second is vitamin B3 three (100,50.0 mg. And overlap between them and replicates each factor. results showed that spraying with gave highest rate vegetative growth plant nutrient content compared plants did not spray. treatment characteristics mineral better than non-spray B3As intervention F3N2 (spraying at concentration 20/mg. L-1 + 100 L-1) outperformed all interaction treatments its content.