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Titolo:
Sorption of atrazine and metolachlor by burrow linings developed in soils with different crop residues at the surface
Autore:
Farenhorst, A; Topp, E; Bowman, BT; Tomlin, AD; Bryan, RB;
Indirizzi:
Univ Manitoba, Dept Soil Sci, Winnipeg, MB R3T 2N2, Canada Univ Manitoba Winnipeg MB Canada R3T 2N2 ci, Winnipeg, MB R3T 2N2, Canada Agr & Agri Food Canada, So Crop Protect & Food Res Ctr, London, ON N5V 4T3, Canada Agr & Agri Food Canada London ON Canada N5V 4T3 ondon, ON N5V 4T3, Canada Univ Toronto, Dept Forestry, Toronto, ON M5S 3B3, Canada Univ Toronto Toronto ON Canada M5S 3B3 estry, Toronto, ON M5S 3B3, Canada
Titolo Testata:
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
fascicolo: 4, volume: 36, anno: 2001,
pagine: 389 - 396
SICI:
0360-1234(2001)36:4<389:SOAAMB>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUMBRICUS-TERRESTRIS; SHALLOW GROUNDWATER; EARTHWORM; RAINFALL; QUALITY;
Keywords:
herbicide; atrazine; metolachlor; earthworm burrows; corn residues; soybean residues; sorption; leaching;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Farenhorst, A Univ Manitoba, Dept Soil Sci, 380 Ellis Bldg, Winnipeg, MB R3T 2N2, Canada Univ Manitoba 380 Ellis Bldg Winnipeg MB Canada R3T 2N2 nada
Citazione:
A. Farenhorst et al., "Sorption of atrazine and metolachlor by burrow linings developed in soils with different crop residues at the surface", J ENVIR S B, 36(4), 2001, pp. 389-396

Abstract

Atrazine and metolachlor sorption by earthworm (Lumbricus terrestris L.) burrows was measured by introducing herbicides into the burrows and collecting the effluent between 0 to 3, 3 to 6, and 6 to 9 min of simulated burrow flow. On average, sorption by burrow linings reduced the herbicide concentration to 78% (atrazine) and 74% (metolachlor) of the applied herbicide solution concentration. For both herbicides, the amount sorbed was dependent onthe food source available to the earthworm, as well as the duration of burrow flow. On average, soybean-fed- and corn-fed-earthworm-burrows significantly retained more herbicides relative to the Control Treatment (unfed-earthwonns). More herbicides were transported through the burrows with time because the lateral flow movement from the burrow wall into the soil matrix decreased. It is also likely that herbicides retained on burrow linings during the first 3 min of flow saturated the adsorption sites on the burrow wall, which decreased the subsequent retention potential of herbicides in flow between 3 to 9 min. Based on these results, we conclude that herbicide transport through earthworm burrows in the field will be related to crop and crop residue management practices.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/08/20 alle ore 18:09:53