Figure 3From: A pest control model with birth pulse and residual and delay effects of pesticides(a) The effects of birth rate b of the pest population on the threshold \(R_{0}^{b}\), \(\mu =0.4\); (b) the effects of pesticide dose μ on the threshold \(R_{0}^{b}\), \(b=20\), other parameters are \(d=0.4\), \(\delta =0.6\), \(g=0.1\), \(r=0.6\), \(h=0.2\)Back to article page