The effect of the Bacillus thuringiensis formulations (SAN 415 I, Dipel, Thuricide HP, Ecotech, Delfen, Protecto), the Neem extract (Nemazal) and the Juvenil hormone mimic (Admeral) besides the mixtures of SAN 415 I and Nemazal or Admeral on corn infestation by large sugar-cane worm, Sesamia cretica Led., and the associated predators were evaluated.  Data revealed that the B.t. formulation Ecotech and the mixtures of SAN 415 I and Nemazal or Admeral were the most toxic compounds against the pest, since they exhibited infestation reduction of 82.99, 83.19 and 80.80%, respectively. On the other hand, the least effective compounds were Dipel and Thuricide HP with infestation reduction of 54.78 and 56.50%, respectively.

Data also indicated that the plants in control plots harbored significantly more number of the pest than the treated plots. This inevitably led to a significant reduction in the yield. The highest yield amount were found in the plots treated with the B.t. formulation Ecotech and the mixtures of the B.t. formulation SAN 415 I and Nemazal or Admeral and the maize yield amounts were 34.75, 33.25 and 31.50 kg/plot (1/100 feddan) with increase rates of 98.57, 90.00 and 77.14%, respectively.

The tested B.t. formulations were less harmful to the associated predators whereas the Neem extract (Nemazal) and the Juvenil hormone mimic (Admeral) were the most harmful compounds.