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Influence of adjuvants on behavior of phenmedipham in plant and soil

100%

Kucharski M. , Sadowski J.

Polish Journal of Agronomy

2009

nr 01

Impact of adjuvants on: phenmedipham, desmedipham and ethofumesate residues in soil and plant

80%

Kucharski M.

nr 3-4

53-59

The aim of investigations was to evaluate the influence of herbicides and adjuvant application on residues in soil and plant material. Field experiments were carried out during 2003-2005 on arable field localized in South-West Poland. Herbicidal preparation to control weeds in sugar beet (containing phenmedipham, desmedipham and ethofumesate), was applied at recommended dose, reduced dose and at reduced dose in mixture with three different adjuvants (mineral oil, plant oil and surfactant). Samples of soil and roots of sugar beet were taken on the day at sugar beet lifting. Herbicide residues in all samples were determined using high performance liquid chromatography with UV-detection. The highest concentration of herbicide active substances were determined in samples from field plots, where herbicidal preparation was applied at full (recommended) dose. Reduction of herbicide dose caused a decrease of residues. The addition of adjuvants caused an increase of the herbicide active substance residue in the soil and roots of sugar beet comparing plots with a reduced dose of preparation without adjuvants added. Residues of active substances determined in roots of sugar beet did not exceed EU acceptable limits.

Bez zbędnych problemów

41%

nr 05