Ocimum basilicum L. (Sweet basil) infected with Fusarium oxysporum was studied from three Governorates (Assuit, Beni-Suif and Fayoum); the highest infection of the basil presented in Beni-Suif Governorate. There are four treatment for control of basil wilt disease, fungicide (Topsin M (1.5 and 3 mg/L), bioagent (Bioark (2.5 and 5 mg/L), silicon (potassium silicate 2 & 4 mg/L) and nanoparticles (Lemon grass 8 ml/L & Citronella 8 ml/L). Topsin M (3 mg/L) had the highest significant in increasing of Ocimum length infected with Fusarium in two seasons (2nd season (39.75cm than 1st season 39.00 cm), where the nano Citronella 8 ml/L gave the lowest efficiency on the plant length in two seasons (34.23&34.82cm) for 1st and 2nd seasons. Bioagent (Bioark 5mg/L) considered the most significant treatment in increasing the branches fresh weight (40.53&41.32 mg ) for 1st and 2nd seasons, while the highest effect of bioagent for branches dry weight (12.65 &13.20 gm) for 1st and 2nd seasons. Root length, root fresh weight and root dry weight; bioagent (Bioark 5 mg/L) gave the highest effect on root length (12.43&12.98 cm) root fresh weight (15.48            &16.01mg) and root dry weight (6.68 &6.94 mg) for first and second season respectively. Finally, essential oil content in Ocimum tissues infected with Fusarium was highest using Bioark 5 mg/L treatment into two seasons (0.07mg) for first and second seasons.