Alexandra-Maria Klein, Ph.D. and her colleagues at UC Berkeley found
that when there is a lack of pollination, via bees and other
pollinators, there is a stronger reduction in harvest yields than when
there is a lack of either fertilizer or sufficient water for the crops.
Their results, which were published in the journals Plant Biology and
PLoS ONE, found that when crops were pollinated, the plants bear more
fruit along with a change in their nutrient content."