Retorts

Biodynamics Blind

As a small addendum to our biodynamic studies, we ran an extra trial comparing the repellent effects of biodynamic tinctures and an egg-based repellent developed by Lisa Crozier at FRI a couple of years ago. The experimental design and the presentation of the results are as for our original report. It was impossible, however, to run this study `blind', simply because the egg-based repellent had an obvious smell and appearance which distinguished it from the control and the biodynamic tinctures.

As you can see from the histogram, the egg-based repellent had a dramatic effect. The tinctures did not work.

Charles Eason, Forest Research Institute