Influence of adjuvants addition on lenacil residues in plant and soil
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Date
2011
Journal Title
Journal ISSN
Volume Title
Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
The aim of this work was to evaluate the influence of
an adjuvant addition on lenacil residues in soil and roots of sugar
beet. Field experiments were conducted during a three-year-period
from 2008 until 2010 on arable fields located in southwestern
Poland. Chemical weed control in sugar beet was carried by
commercial formulation of lenacil. Herbicide was applied alone
(recommended and reduced doses) and in mixture with adjuvants
(oil, surfactant and multicomponent). Lenacil residue was analysed
using HPLC/UV. At lifting time the residues of lenacil in
soil amounted to 0.0006–0.0042 mg kg-1. In sugar beet roots samples,
the residues of lenacil were lower than in soil and amounted
to <0.0005–0.0020 mg kg-1. The addition of adjuvants caused an
increase of the active substance residues in soil and roots of sugar
beet in comparison with the treatments, where lenacil was used
without adjuvant (reduced dose). The increase of the lenacil residues
was statistically significant for most of soil and plant samples
and amounted average to 45 and 41% respectively. Influence
of single adjuvant on lenacil residues in soil and plant was different
for each year (experimental season). The residues of lenacil
determined in roots of sugar beet did not exceed acceptable value
(MLR).
Keywords
adjuvant, herbicide, residue, lenacil, soil, sugar beet
Citation
Polish Journal of Agronomy
2011, 5, 39–42