Optimal Control Policies of Pests for Hybrid Dynamical Systems

Figure 3

The impact of the number and dosage of application insecticides on pests and natural enemy with parameters of (a) 𝛿₁=0.9,  𝛿₂=0.85,  𝛿₃=0.85,  𝜃=0,  𝑇=6, and  𝑞=1, (b)  𝛿₁=0.95,  𝛿₂=0.85,  𝛿₃=0.85,  𝜃=0,  𝑇=6, and  𝑞=6, (c) 𝛿₁=0.58,  𝛿₂=0.62,  𝛿₃=0.85,  𝜃=0,  𝑇=6, and  𝑞=6, and other parameters the same as Figure 1.

(a)

(b)

(c)