Effect of Damas(Conocarpus lancifolius)extract and NeemAzal-T/S against Cotton Cotton Cotton Cotton Mealy ealy ealy Bug )Phenacoccus Phenacoccus Phenacoccus Phenacoccus solenopsis solenopsis solenopsissolenopsis

Abstract

Experiment was conducted in the Laboratory of Entomology and Zoology, Department of Plant Protection, College of Agricultural Studies (Shambat), Sudan University of Science and Technology (SUST) in the period of April- May 2016. The main aim of this research is to study the effect of damas acetone extract and NeemAzal-T/S against the adults of adults of adults of adults of adults of adults of adults of adults of adults of cotton mealy bugotton mealy bugotton mealy bugotton mealy bugotton mealy bugotton mealy bugotton mealy bugotton mealy bug otton mealy bugotton mealy bugotton mealy bugotton mealy bugotton mealy bug (Phenacoccus Phenacoccus Phenacoccus Phenacoccus Phenacoccus Phenacoccus Phenacoccus Phenacoccus Phenacoccus Phenacoccus solenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsis (. Three concentrations of damasdamas damas extract (2, 1 and 0.5 ml/liter) and one concentration (1 ml/liter ( of NeemAzal-T/S were used in this experiment. The results showed that there are no significant difference between all concentrations of damas extract and control, while NeemAzal T/S gave highly significant difference when compared to the control. The higher concentration (2 ml/l) of damas extract gave only 10% mortality after 3 days post treatment, while a half of this concentration (1 ml/l) of NeemAzal T/S caused 78% mortality after the same period of exposure. These results revealed that damas acetone extract have a little effect against the adults of P. solenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsissolenopsis. In contrast NeemAzal T/S induces a significant effect against this pest. From above mentioned results we conclude that NeemAzal-T/S was effective against cotton mealy bug cotton mealy bugcotton mealy bugcotton mealy bugcotton mealy bugcotton mealy bugcotton mealy bugcotton mealy bug cotton mealy bugcotton mealy bugcotton mealy bugcotton mealy bugcotton mealy bug, and it could be used as alternative bio-pesticides against this pest in the future.