Determination of chlorimuron and metsulfuron residues in two soils of Argentina using a rapid seed-bioassay.
J Environ Biol
;
2002 Oct; 23(4): 353-8
Artículo
en Inglés
| IMSEAR
| ID: sea-113222
ABSTRACT
The presence of chlorimuron ethyl and metsulfuron methyl in two soils was determined by a modified petri dish bioassay. Pregerminated seeds of maize and sunflower were placed in petri dishes containing 85 to 100 g of treated soil. Radicle root lengths were measured after 24 h. Chlorimuron had no effect on maize on the Balcarce soil, however 0.007 microg g(-1) decreased sunflower root length. Chlorimuron decreased maize and sunflower root length regardless application dose on the San Cayetano soil. Metsulfuron decreased maize root length at 0.04 microg g(-1) and sunflower at 0.021 microg g(-1) on the Balcarce soil. On the San Cayetano soil metsulfuron at 0.001 microg g(-1) decreased maize and sunflower root length. The phytotoxicity of chlorimuron and metsulfuron changed according to soil type and dose. Maize and sunflower were 1.3-1.5 and 1.3-1.8 times respectively more sensitive to chlorimuron on the San Cayetano soil than on the Balcarce soil. In the case of metsulfuron, maize was similarly sensitive on both soils but sunflower was 1.7-2.0 times more sensitive on the San Cayetano soil than on the Balcarce soil. Phytotoxicity increased as organic matter (OM) content decreased and/or when the soil pH and concentration increased.
Texto completo:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Argentina
/
Pirimidinas
/
Semillas
/
Contaminantes del Suelo
/
Compuestos de Sulfonilurea
/
Bioensayo
/
Residuos de Plaguicidas
/
Arilsulfonatos
/
Zea mays
/
Helianthus
País/Región como asunto:
America del Sur
/
Argentina
Idioma:
Inglés
Revista:
J Environ Biol
Año:
2002
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS