The effect of three dried leaf plant powders of Trigonella foenum- graecum, Tagetes erecta and Capsicum annuum singly or integrated with oxamyl on the reproduction of root-knot nematode, Meloidogyne incognita infecting tomato, Solanum lycopersicum was studied under greenhouse conditions. Dried leaf powder of T. foenum-graecum outperformed other single treatments tested for whole plant vegetation parameters. However, tetra application including such dried materials plus oxamyl showed a high synergistic effect on reducing nematode population, galls and egg masses numbers in tomato with values of 91.5, 92.5 and 94.8%, respectively. The chlorophyll content of the individual applications showed percentage reduction values in tomato leaves ranging from 14.1 to 16.6%, while the tetra treatment achieved the highest percentage reduction (18.1%). However, a significant increase in the concentration of nitrogen, phosphorus, potassium, and phenol was recorded with all tested treatments compared to nematode alone, Hence, the tetra treatment achieved the highest percentage in such criteria reaching 2.30, 0.44, 2.79 and 93.40%, respectively.