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Titolo:
The effect of the herbicide diuron on soil microbial activity
Autore:
Prado, AGS; Airoldi, C;
Indirizzi:
Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil Univ Estadual Campinas Campinas SP Brazil BR-13083970 BCpinas, SP, Brazil
Titolo Testata:
PEST MANAGEMENT SCIENCE
fascicolo: 7, volume: 57, anno: 2001,
pagine: 640 - 644
SICI:
1526-498X(200107)57:7<640:TEOTHD>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROCALORIMETRIC MEASUREMENTS; GLUCOSE DEGRADATION; CELLULAR-SYSTEMS; CALORIMETRY; PESTICIDES; BIOMASS; MICROFLORA; MOISTURE; TOXICITY; ECOLOGY;
Keywords:
pesticide; toxicity; soil; micro-organisms; microcalorimetry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Airoldi, C Univ Estadual Campinas, Inst Quim, Caixa Postal 6154, BR-13083970 Campinas, SP, Brazil Univ Estadual Campinas Caixa Postal 6154 Campinas SP Brazil BR-13083970 BC
Citazione:
A.G.S. Prado e C. Airoldi, "The effect of the herbicide diuron on soil microbial activity", PEST MAN SC, 57(7), 2001, pp. 640-644

Abstract

The inhibitory effect of the herbicide diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] on microbial activity in red Latosol soil was followed using microcalorimetry. The activity of the microorganisms in 1.50 g of soil sample was stimulated by addition of 6.0 mg of glucose and 6.0 mg of ammonium sulfate under 35% controlled humidity at 298.15 (+/- 0.02) K. This activity was determined by power-time curves that were recorded for increasing amounts of diuron, varying from zero to 333.33 mug g(-1) soil. An increase in the amount of diuron in soil caused a decrease of the original thermal effect, to reach a null value above 333.33 mug g(-1) of herbicide. The power-timecurve showed that the lag-phase period and peak time increased with added herbicide. The decrease of the thermal effect evolved by micro-organisms and the increase of the lag-phase period are associated with the death of microbial populations caused by diuron, which strongly affects soil microbial communities. (C) 2001 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 18:36:15