The Effect of Cultivars of Impatiens, Amblyseius cucumeris (Acari: Phytoseiidae) and Pollen on Feeding Damage Rate of Frankliniella occidentalis (Thysantoptera: Thripidae)

The effect of cultivars of impatiens,release of Amblyseius cucumeris and additional pollen on feeding damage rate of Frankliniella occidentalis was studied by the experiment of randomized complete block design.The results showed that the cultivars of impatiens and release of A.cucumeris had a significant effect on feeding damage rate of F.occidentalis.The feeding damage rate was greater on the cultivar 'Impulse Orange' than on 'Cajun Carmine'.The feeding damage rate was greater on the cultivar'Impulse Orange'than on 'Cajun Carmine'.The feeding damage rate was lower when the predators were released than when they were absent,however,the difference between high ratio predator:prey and low ratio was not significant.Adding pollen to impatiens had no effect on feeding damage rate regardless of when it was added.