Insect Pollination of Cultivated Crop Plants

Agron ALFALFA LEAFCUTTER BEE alkali bee Amer anthers apple Avocado beans Bee Jour bee pollination bee visits beekeeper bloom blossoms BLUEBERRY Bohart BREEDING bumble bees caged Calif California cherry citrus colonies of honey colonies per acre corolla cotton CRANBERRY cross-pollination CUCUMBERS cultivars Econ effect Expt feet fertilization field florets flower opens forage fruit set grower grown harvested hive honey bee colonies honey bees Hort hybrid vigor inches increased indicate Inflorescence insect pollination lb/acre leafcutter bee legume Literature Cited male male-sterile muskmelon natural crossing nectar nectar and pollen nest orchard ovary ovules percent pesticides petals pistillate pistillate flowers plants pollen tube pollinating agents pollinating insects Pollination Recommendations Pollination Requirements pounds Proc receptive Recommendations and Practices RED CLOVER reported Russian saturation pollination seed production seed set self-fertile self-pollination self-sterile Sepal species stamens sterility stigma STUDIES style trees tube U.S. Dept usually wild bees