The anthers sur round the stigma and shed their pollen upon it. Mechanical tripping is unnecessary to ensure adequate pollination. If the stigma is pollinated by an insect visitor before it is touched by its own pollen, cross-pollination will result. Most research to date has not conclusively shown significant increases in yield with bee visitation. However, some growers feel they benefit by having colonies of honey bees near their fields.
Bees work the crop well for nectar and obtain some pollen from it.
Nectar is secreted at the base of the flower and is a source of fine-quality honey. Nectar secretion seems to be greatest when plants first come into bloom and remains intense for about a week.