Ecological and economic threshold (EET) and its estimation method
Author of the article:MEN Xing-Yuan;LI Li-Li;OUYANG Fang;ZHANG Qing-Qing; LU Zeng-Bin;LI Chao;GE Feng
Author's Workplace:Institute of Plant Protection, Shandong Academy of Agricultural Science, Ji'nan 250100, China; State Key Laboratory of Integrated Management of Pest and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
Key Words:agricultural pest; ecological and economic threshold; estimation method; index of pesticide ecological risk
Abstract:
Economic threshold (ET) was
the key index for guiding agricultural pest management, which was based on the
value of the saved crops and control cost in the pest management. Because the
ecological cost of pesticide use often was less considered in the practical
application, ET was lower and more pesticides were used.
We proposed the concept of ecological and economic threshold (EET) with the aid
of the new development in the assessment of ecological impacts of pesticide
use, in which both the control cost and ecological cost of pesticide use were
fully considered. The simple mathematic model and estimation method based on
the index of pesticide ecological risk
use were presented. EET will be conducive to promote the pest management level
and achieve purpose of pesticide reduction.