Hassan M.A., Chindo P.S., Marley P.S., Alegbejo M.D. (2010) and sawdust (SD), for the management of root knot nematodes, Meloidogyne spp., on tomato. Organic wastes were applied at the rate of 15, 30 and 45 metric tons per hectare. Furadan (3G) was applied at the rate of 16, 32 and 64 kg/ha and non-amended plots served as control. The experiment was laid out in randomized complete block design (RCBD). Four weeks old tomato seedlings (cv. Roma VF) susceptible to root knot nematodes were transplanted at a number of eight seedlings per plot of 2 m × 1 m with 45 cm spacing between stands. Fertiliser application, weeding, irrigation and other practices were done as recommended. The results showed that RD treatment gave the significantly (P = 0.05) highest reduction in the nematode population compared to nonamended treatment. It resulted in a significant (P = 0.05) increase in the yield of tomato by 17-100% for RD, 13-84% for SD and 21-63% for RH.

Plant extracts are, nowadays extensively used as environmentally friendly ways for biological control of insect and plant diseases, instead of using chemical pesticides. Therefore, this study aimed to find out the effect of Calotropis procera, Poultry manure, Carbofuran, and Beauveria bassiana (Bals.) on root-knot nematode (M. incognita) in tomato crop. To study the efficacy of different botanical extracts for management of root-knot nematode, M. incognita in Zalingei, Central Darfur, Sudan, a pot experiments were conducted. Results showed that all biological extracts caused significant decreases in egg hatching and increasing nematode mortality and increasing growth and yield parameters of tomato crop. It found that these biological extracts are involved in plant defense and hence provide resistance against nematode attack that reveals with good response to the environment and saving human life.