Effect of Different Control Agents on Meloidogyne Incognita Kofoid Infesting Cucumber Plants

The stock solution 10% and half 5% of three oils namely; mineral oil (Diver 97 % EC), plant marjoram (Origanum majorana L.) orange (Citrus aurantium L.), as well two species bacteria Bacillus megaterium BTS1 (Bacillus poylmyxa)at concentrations showed that nematicidal activity against egg-mass second stage juveniles Meloidogyne incognitaKofoid in vitro experiments. Egg hatching juvenile mortality were significantly (P ≤ 0.05) influenced by tested materials, concentration exposure time. B. megaterium, diver gave a higher effect, while poylmyxa was the lowest effective one. In case mortality, poylmyxa, highest percentage of  (75.14, 73.00 61.85 %) after at solutions  (10%)  (53.00 , 67.42 52.57 with to (5%) seven days treatment, respectively. Under greenhouse conditions, results indicated that, oxamyl, dry leaf powder moringa most suppressing root galling M. incognita infectingcucumber plants. maximum increase shoot fresh weight recorded on cucumber 43.26 25.36% pots treated oxamyl A moderate effect eggs eco-friendly materials observed invasion reproduction M.incognita under conditions. All reduced nematode parameters increased growth compared control treatment. Strongly decrease number egg masses galls diameter followed oils. Minimum gall particularly ≥ 4mm plants megaterium. Data could be used crop yield for controlling – knot nematode, incognita.