Efficacy of natural oils against the biological activity on Callosobruchus maculatus and Callosobruchus chinensis (Coleoptera: Tenebrionidae)

Abstract

When the corresponding nano-oils were applied against C. chinensis, the accumulations obtained 89.7, 42.8, 70.9, and 48.9% as compared to 0.1% in the control. When the tested oils and their nano were tested against C. maculatus life cycle, the number of eggs laid/female were significantly decreased to 6.4 ± 9.89 eggs/female after nano-rosemary treatments as compared to 299.9 ± 9299 eggs/female in the control. The adult emergence decreased to 1% after nano-rosemary treatments as compared to 100% in the control. The malformations of the insect significantly increased after nano-rosemary and nano-anis to 100% as compared to 0% in the control. The same results obtained when C. chinensis were treated with different tested oils. The number of eggs C. chinensis laid/female was 8.3 ± 1.0 eggs/female as compared to 298.9 ± 7.89 eggs/female in the control.