From Dr. Mark Winston at Simon Fraser in Vancouver, BC, Canada:
http://tinyurl.com/pfgbqev
His research showed that yields of canola (and profits) were increased when there was a deliberate (large-- ~1/3) portion of farmland that was not cropland--but left fallow. The differences in dollars per farm: $27,000 vs. $65,000. His conclusion: healthier bee (native and managed alike) populations resulted in better pollination of the money crop. Worth a read.
http://tinyurl.com/pfgbqev
His research showed that yields of canola (and profits) were increased when there was a deliberate (large-- ~1/3) portion of farmland that was not cropland--but left fallow. The differences in dollars per farm: $27,000 vs. $65,000. His conclusion: healthier bee (native and managed alike) populations resulted in better pollination of the money crop. Worth a read.