Insecticidal Potential of Botanicals from Red Seaweeds against Stored Grain Pests, Rice Weevil (Sitophilus oryzae L.) and Cowpea Weevil (Callosobruchus maculatus Fab.)
Rabia Bibi1, R. Muhammad Tariq2, Samir A.M. Abdelgaleil3 and Munawwer Rasheed1, 4*
Study map showing the sampling sites in Karachi coast.
Oviposition effects of red seaweeds on C. maculatus. Average proportion of 10 pairs of C. maculatus eggs laid on grains treated with four red seaweeds extracts (2.2 mg/cm2) after 96 h exposure. Data is given in the mean percentage (n= 3) and their standard error. Asterisks on bars are significant levels at P < 0.05 (ns, non-significant; *P < 0.05; **P < 0.01; ***P < 0.001). H, D, M in codes represent hexane, dichloromethane and methanol extracts while J, L, A and G in codes represent J. rubens, L. karachiana, A. taxiformis, and G. foliifera.