Optimal Application Timing of Pest Control Tactics in Nonautonomous Pest Growth Model

Figure 6

The bifurcation diagram of stable periodic solution of system (1) with 𝑎(𝑡)=1/(50+15sin(3𝑡)), 𝑏(𝑡)=0.5, 𝑐(𝑡)=0.5, 𝛿(𝑡)=0.4, 𝑟(𝑡)=0.5, 𝑝₁=0.7, 𝜎₁=0.5. (a) The bifurcation diagram of pest for system (1); (b) the bifurcation diagram of natural enemy for system (1).

(a)

(b)