Kutchalli drilling waste pit materials (WPM) in the Nigerian National Petroleum Corporation, NNPC, exploration site in Borno State of Nigeria was evaluated for systemic toxicity to inhabitants (man, animal and plants) via the food chain. In this experiment, biometric indices were analysed using standard methods. Results obtained showed that the
control soil (group 1) had plant height of 27cm ±0.2, leaf length 2.8cm ±0.3, while those of the wpm soils of group 5 had plant height of 25cm ±0.2, leaf length 2.3cm ±0.1 and group 7 plant height of 19cm ±0.3 and 1.6cm ±0.2 with a significant difference at p