Figure 7

Means comparison for Nitric acid radical scavenging rate, DPPH, Superoxide radical scavenging and Chain breaking activity of Nigella sativa L. as influenced by biofertilizers and urea. Dissimilar letters show significant differences at the p ≤ 0.01 level. Control (C), U Chemical urea, Nb (biological N), Pb (biological P), Kb (biological K, NPKb (mixed biological NPK), Nb + U50%, Pb + U50%, Kb + U50%, and NPKb + U50%.