Prediction of pesticide migration in soils: The role of experimental soil control


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

Optimal solutions found with mathematical models on agricultural chemical application depend on the interrelated complexity of the model and the required accuracy: the larger the number of complexly determined parameters, the more difficult the model. As a result, the calculation accuracy decreases. This problem should be solved with understanding of the physical aspects of the main soil processes of pesticide transport, experimental determination of their parameters, and adjustment of models in parallel with a substantiated reduction in their complexity. Experimental study of the physical processes with the PEARL 4.4.4 model and analysis of its sensitivity to the input parameters has shown which characteristics of experimental control are the most significant for water and pesticide migration. A filtration experiment with KCl made it possible to determine the dispersivity length and the filtration coefficient. As a result, a description of pesticide migration with fast water flows was introduced into the equation and the prediction accuracy increased.

About the authors

E. V. Shein

Faculty of Soil Science

Author for correspondence.
Email: evgeny.shein@gmail.com
Russian Federation, Moscow

A. A. Belik

Faculty of Soil Science; All-Russia Research Institute of Phytopathology, Bol’shie Vyazemy

Email: evgeny.shein@gmail.com
Russian Federation, Moscow; Odintsovo district, Moscow oblast

A. A. Kokoreva

Faculty of Soil Science; All-Russia Research Institute of Phytopathology, Bol’shie Vyazemy

Email: evgeny.shein@gmail.com
Russian Federation, Moscow; Odintsovo district, Moscow oblast

V. N. Kolupaeva

All-Russia Research Institute of Phytopathology, Bol’shie Vyazemy

Email: evgeny.shein@gmail.com
Russian Federation, Odintsovo district, Moscow oblast

P. A. Pletenev

Erisman Federal Research Center of Hygiene

Email: evgeny.shein@gmail.com
Russian Federation, Mytishchi, Moscow oblast

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2017 Allerton Press, Inc.