THE VALUE OF A CORRECTLY TIMED supplementary feeding of honey bees with natural pollen. or with a combination of drivert sugar and natural pollen. has been demonstrated in Fresno County during four field-scale experiments. Each of these experiments included 60 bee colonies which were rented for crop pollination of almonds and alfalfa seed during 1968 and 1969. https://macorners.shop/product-category/blue-bottle-lamp/