green

Chemical Composition and Biological Activity of Extracts Obtained by Supercritical Extraction and Ethanolic Extraction of Brown, Green and Red Propolis Derived from Different Geographic Regions in Brazil The variations in the chemical composition, and consequently, on the biological activity of...

How Bees Discriminate a Pattern of Two Colours from Its Mirror Image A century ago, in his study of colour vision in the honeybee (Apis mellifera), Karl von Frisch showed that bees distinguish between a disc that is half yellow, half blue, and a mirror image of the same. Although his inference...

hey all, as some of you may know, pierco makes a green drone comb frame for deep boxes to help with varroa control. http://www.pierco.net/products_dronecomb.htm my question: does anyone know if a similar product exists for medium boxes? thanks, beeme13