Insect Pollination of Cultivated Crop Plants

Agron alfalfa ALFALFA LEAFCUTTER BEE alkali bee Amer anthers apple Avocado beans Bee Jour bee pollination bee visits beekeeper berries bloom blossoms BLUEBERRY Bohart BREEDING bumble bees caged Calif California cherry citrus colonies of honey colonies per acre corolla cotton crop cross-pollination CUCUMBERS cultivars develop Econ effect Expt feet fertilization field florets flower opens forage fruit set grower grown harvested hermaphrodite honey bees HONEYBEES Hort hybrid inches increased indicate Inflorescence insect pollination lb/acre legume Literature Cited male male-sterile muskmelon NATURAL CROSSING nectar nectar and pollen nest onion ovary ovules parthenocarpic percent petals pistillate pistillate flowers plants pollinating agents pollinating insects Pollination Recommendations Pollination Requirements pounds Proc Purseglove 1968 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