Generating Pre-Harvest Interval Data

All supervised trials are conducted by University-associated personnel, each receiving the same instruchons for procedures, equipment, and data interpretahon. A single nahonal laboratory is responsible for analysis of the samples. Relevant 

Trials are designed to cover a range of representative field conditions. Chile is a rather long and narrow country and the fruit regions extend for nearly 2,000 km, from the desert area in the north (no rain at all) to rainy areas receiving an annual average of 1.5 meters of rainfall in the southernmost part of the coimtry where berries are produced. Since climatic conditions have an important influence on the persistence and performance of selected chemicals, representative growing areas are carefully selected as trial sites. In a period of 12 years, over 1,500 supervised trials have been conducted. 

An Example of a Supervised Trial Model in the Pesticide Agenda  

The dissipation curve was statistically calculated and plotted accordingly [11]. Corresponding values for LOD, LOQ, and percent recovery from non-treated samples are shown below. In this particular case, to reach, for example, a dtrus fruit tolerance of 0.1 mg/kg for bifenthrin, the Pesticide Agenda would recommend a pre-harvest interval of 28 days to the growers. 

As a result of these initiatives, Chile has emerged as the largest fresh fruit exporting country from the Southern hemisphere. Over 70 markets worldwide are supplied with assorted Chilean fresh produce, primarily table grapes, kiwifruit, pome fruits, and stone fruits, and to a lesser extent, lemons, clementines, and avocados. 

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