Drake, C.L.; Smith, E.F.; Spies, H.G.; Richardson, D.; Good, D.L.
(Kansas Agricultural Experiment Station, 1964)
This trial was designed to study effects of low to high levels of calcium and phopphorus supplements on heifers grazing bluestem pasture. February 18, 1961, 40 Hereford heifer calves, weighing about 400 pounds each, were ...