Researchers
Dr. Nabil Rifai
Mr. Norbert Kung (P. O. Box 116 Walton, N. S. B0N 2A0)

Background
Heavy reliance on pesticides for control of insects has resulted in severe problems of insecticide resistance in some areas and potential ones in others. Alternative strategies are required to maintain control levels and to minimize environmental degradation by agrochemicals. One possible alternative would be the use of bio-collectors. This mechanical means of pest control has an apparent place in the sustainable production systems which are very dependant on biological control.

Objectives
The objective of this project is to determine the efficacy of bio-collector in controlling the potatoe beetle in relation to the different life stages of the insect.

Duration
This project was initiated in April, 1997 and completed in March, 1998.

Results & Conclusions
A model experiment was established in 1997 at an organic farm in Bramber, Nova Scotia, for testing a pneumatic insect bio-collector designed for the control of Colorado potato beetle. Measurements were taken and observation were made to determine the effectiveness of this machine in controlling Colorado potato beetle. This study demonstrates the potential of pneumatic control for the Colorado Potato beetle adults and larvae. Dislodging efficacy of the adults averaged over 52%, for larvae in 2-3 instar it was over 59% and for larvae instar it was over 56%. The highest efficacy of bio-collector on all life stages of Colorado potato beetle was achieved at a tractor speed of 2.5 km/hr and an airflow speed of bio-collector of 22.95 m/s, which was 72.0%. Pneumatic insect control can be interesting alternative for farmers on organic farms with considerable vegetable areas.

Potential Industry Benefits
Benefits to industry would include a more efficient method of pest control.

Partners
This project was funded by Selwood Green, Growers & Purveyors of Fine Organic Produce.