A new concept of economic injury level that includes penalization of damage to quality and safety of agricultural products

https://doi.org/10.17221/8380-PPSCitation:Stejskal V. (2001): A new concept of economic injury level that includes penalization of damage to quality and safety of agricultural products. Plant Protect. Sci., 37: 151-156.
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The traditional model of Economic Injury Level (EIL) does not allow to directly incorporate aspects of damage to quality and safety of a product (Dq) into the decision-making process to control a pest (pathogen, weed, arthropod, vertebrate). This work now attempts to generalize a concept of EIL by (i) separating damages to quality and safety (i.e. Dq and EILq) from quantitative (i.e. Dw and EILw) types of damage (D) in the traditional EIL-equation, and (ii) by establishing a new way of estimation of EILq based on the penalization of quality and/or safety damage. The importance to distinguish between the terms EIL, EILw and EILq is discussed, and a calculation of the new index (Z), enabling the comparison of the relative economic importance of qualitative and quantitative damage caused by a particular level of pest infestation or disease severity, is proposed.
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