Field crop residues

Description of the different types of field crop residue studies... 

There are important instructions in each section in the series relative to specific types of tests. However, four sections of the series provide particularly significant instructions relative to field crop residue trials and a short summary of their content is listed below. 

The types and amounts of raw data generated will be illustrated by following a planned field crop residue program from its definition (protocol) stage to the final report. The archival/documentation needs will then be similarly illustrated. 

A range of analytical methods was developed to characterize the nature of metabolites formed in crops both f rom the 4C metabolism studies and field crop residue studies. 

The group of tests that must be performed for each pesticide depends on how that pesticide is to be used. For example, if a pesticide is not used on food or feed crops, extensive residue and metaboHsm tests in plants and domestic animals might not be required. Similarly, if a pesticide is not used in field crops nor on other extensive outdoor areas, aH the environmental fate studies might not be required. 

Plant metabolism studies will provide information on the absorption, translocation, dissipation and degradation of the agrochemical. This information defines the residual analytes of regulatory concern that could include either the parent compound or metabolites in the field crops. Plant metabolism studies should be conducted with at least three crop representatives of three different crop groups listed in Table 1. One of the major objectives is to determine the comparative metabolism of the agrochemicals between animals and plants among different plant species. MAFF approves metabolism studies that are conducted in foreign countries, which should be operated under the certified GLP system. 

In preparation for a registration submission, applicants should conduct a residue study on each edible crop through supervised field trials. Residue data should be prepared for each use pattern and formulation type to be labeled. 

Conducting crop residue field trials in Europe... 

Field residue data, which are generated to meet requirements in the pesticide registration process, are used to regulate the use of agriculture products within the European Union (EU). This article examines the best practices to conduct crop field trials and to generate crop residue samples in Europe in order to provide part of the data that the agrochemical producers of the active ingredients must provide to the EU Commission. 

---