Effect of Biosynthesized Nanoselenium on Controlling Tomato Root-Knot Nematode Meloidogyne incognita

Tomato is a globally important fruit crop, which easily susceptible to infection by plant-parasitic nematodes during growth. In this study, selenium nanoparticles were biosynthesized through the selenite reduction pathway in wild-type Pseudomonas stutzeri BB19 and characterized uniform nanostructured needle-like forms with an average size of 95.2 nm. The nematicidal effect (BioSeNPs) at different concentrations (2, 6, 10 ppm) pre- or post-infection tomato root-knot nematode (RKN), Meloidogyne incognita, was assessed under greenhouse conditions. BioSeNPs applied as foliar spray soil drench, compared ethoprophos nematicide (100 mL/pot). results showed that significantly reduced number galls, egg mass, eggs/egg mass M. incognita 94.2, 92.8, 49.8%, respectively. BioSeNPs, sprays, galls post-treated infected plants ppm pre-treated 2 91.9 91.4%, Concerning it 90.9%. Moreover, drench 43.3%. On other hand, considerably improved growth, chlorophyll b, carotenoid content, enzymes (i.e., catalase peroxidase) activity untreated (negative control). Hence, show significant application potential cost-effective environmentally friendly biocontrol agent for RKN management plants.