When H_p is equal to r/2, the stable equilibrium is K/2 and referred to as the maximum sustainable yield. Assume r = 0.2 and K = 80. What is the maximum sustainable yield? For which value of H_p does it occur? Identify this curve in Figure 7.10. Figure 7.10. Harvested logistic in proportional mode. Solution K/ 2 = 80 / 2 = 40 r/ 2 = 0.1 Ho = 0.1.