Blackbeans(Phaseolus vulgaris(L.) var ‘Black Turtle') were grown on a Lakeland soil in a factorial growth chamber experiment with 0 and 8 ppm added Zn; 0, 20, 40, 80, and 160 ppm added P; and under two temperature regimes ‐ a 28°C/23°C (day/night) temperature and a 20°C/15°C (day/night) temperature. Blackbeans were also grown at two field sites in Southern Manitoba which were selected for their low supply of available zinc. Zinc, at 0 and 15 kg/ha, and phosphorus, at 0, 100, 200, 400, and 800 kg P205/ha vere disced into the soil in a factorial experiment.