Effects of soil moisture and treatment volume on bentazon mobility in soil

Autor: Corinne Perrin-Ganier, Michel Schiavon, Benoît Real, Sophie Guimont
Přispěvatelé: Revues Inra, Import, Laboratoire Sols et Environnement (LSE), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL)
Jazyk: angličtina
Rok vydání: 2005
Předmět:
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Environmental Engineering
modalité de traitement
lessivage du sol
structure du sol
0207 environmental engineering
eau du sol
Soil science
02 engineering and technology
010501 environmental sciences
eau mobile
01 natural sciences
complex mixtures
analyse de sol
pollution par l'agriculture
Field capacity
chemistry.chemical_compound
teneur en eau du sol
bentazon
mobilité de l'eau
bentazone
mobile water
Leaching (agriculture)
020701 environmental engineering
Water content
pesticide
0105 earth and related environmental sciences
[SDV.EE]Life Sciences [q-bio]/Ecology
environment
volume
[SDV.SA] Life Sciences [q-bio]/Agricultural sciences
Macropore
Bentazon
diffusion
pollution du sol
6. Clean water
Leaching model
Agricultural sciences
leaching
immobile water
[SDV.EE] Life Sciences [q-bio]/Ecology
environment
Soil structure
chemistry
Soil water
Environmental science
Agronomy and Crop Science
Sciences agricoles
Zdroj: Agronomy for Sustainable Development
Agronomy for Sustainable Development, Springer Verlag/EDP Sciences/INRA, 2005, 25 (2), pp.323-329
Agronomy for Sustainable Development, Springer Verlag/EDP Sciences/INRA, 2005, 25, pp.323-329
Agronomy for Sustainable Development, Springer Verlag/EDP Sciences/INRA, 2005, 25 (2), pp.323-329. ⟨10.1051/agro:2005012⟩
Agronomy for Sustainable Development 2 (25), 323-329. (2005)
Agronomy for Sustainable Development (25), 323-329. (2005)
ISSN: 1774-0746
1773-0155
DOI: 10.1051/agro:2005012⟩
Popis: International audience; Soil moisture affects the leaching behaviour of pesticides by inducing their physical entrapment in the soil structure. Columns containing soil aggregates were dampened to specific initial moisture levels. Bentazon was dripped onto surface aggregates in different volumes. The columns were then percolated after an equilibration period. Soil water from the columns was divided arbitrarily among mobile and immobile regions in order to describe the herbicide redistribution processes in the soil. When the soil was dry before treatment, bentazon losses by mass flow were 1.5 to 4 times higher than in wet conditions. Between application time and percolation, any water present in the porous matrix might favour pesticide diffusion towards immobile water regions as well as adsorption into and onto soil aggregates, preventing its leaching. The use of large solution volumes of the pesticide modifies surface soil moisture, suppressing any difference in behaviour between dry and wet soil application conditions.
Databáze: OpenAIRE
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