FAO's Global Action on Pollination Services for Sustainable Agriculture

A tale of two strawberries


Two strawberries (grown near Nanyuki, Kenya): The strawberry on the left is well shaped and it developed from a flower that received sufficient pollination on most of its stigmas. The one on the right shows evidence that only the side stigmas, those that usually touched the anthers, received sufficient pollination while all the central stigmas did not get pollinated and so the central part of the strawberry did not develop. In many markets, the strawberry on the right would be discarded. When wild small bees land on a strawberry flower, they walk in a circle around the center of the flower, collecting and shaking up pollen.  When honey bees land on the flower, they grasp and rock to and fro - a movement that spills pollen onto their bodies and the rest of the flower.  It is the combination of the two that makes for the best, and most complete, strawberry pollination. For more information, refer to “Section 1: Definitions and Conceptual Framework” in the FAO publication Protocol to Detect and Assess Pollination Deficits in Crops: A Handbook for its Use.