The Maximum Pest Limit Concept Explained

Fig. 2. A graphical interpretation of equation 6 from Baker et al. (1), with m=2, N=141250, ยต=7.427, p=0.205, =0.95 (data from Mangan et al. (6)). The solid bold line shows the probability that the consignment is below the maximum pest limit after treatment Pr(B) as a function of the survival rate after treatment s. For the selected parameter values above, this line intersects with 0.5 (shown by a solid horizontal line) between s=10-5 and s=10-6, indicating that the survival rate after treatment required to meet the adopted maximum pest limit was lower than probit nine level, s=10-4.5. Thus, if the actual survival rate after treatment was probit nine level, additional pest control measures designed to reduce the pre-treatment level of infestation would be required in order to comply with the adopted maximum pest limit.



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The Maximum Pest Limit Concept Explained