Fig. 4

a Crosschecking the pots for damage before opening. b Opening the pots for testing. c Control pot infected by Sitophilus granarius weevil. d Hybrid wheat seed group infected (seeds looking like white powder, completely infected by Sitophilus granaries weevil, this was control pot). e Checking maize seeds for Sitophilus zeamais Motsch infection at the end of the experiment. f Observed infection in hybrid maize seeds treated with neem leaves + matchsticks and placed on the floor. g Observed no infection in traditional maize seeds treated with neem leaves + matchsticks and placed on shelf. h Found infection in hybrid maize seeds treated with only matchsticks and placed on a shelf. i Observed no infection in traditional maize seeds treated with only matchsticks and placed on shelf