CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS
The effluent of the sewage treatment plant of the City of Aguascalientes contains chromium and lead. This effluent is used to irrigate alfalfa (Medicago sativa) and orchard grass (Dactylis glomerata). The present study was carried out to evaluate the uptake of both metals by the two mentioned species. Plots were sown with alfalfa and orchard grass and irrigated with solutions containing 6, 12 or 24 mg L-1 of chromium, and 5, 10 or 20 mg L-1 of lead when seedlings were three weeks old. The irrigation treatments were repeated every two weeks, during 4 months. Soil and plants samples were collected at different growth stages and digested with nitric acid for chromium and lead determination. Metals in solution were determined by atomic absorption spectrophotometry. Chromium uptake by orchard grass was higher than by alfalfa, and uptake was a function of the amount applied. Chromium content of orchard grass roots was twice that of the aboveground portion, however, in alfalfa, this ratio was closer to equality. Lead uptake by these species was less than that of chromium. Orchard grass accumulated more lead in the roots than in the above ground portion, however, the opposite was true in the case of alfalfa.
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Digital revista |
| Language: | spa |
| Published: |
Colegio de Postgraduados
1999
|
| Online Access: | https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1623 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
oai:ojs.pkp.sfu.ca:article1623 |
|---|---|
| record_format |
ojs |
| spelling |
oai:ojs.pkp.sfu.ca:article16232020-05-14T14:26:25Z CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS ABSORCION DE CROMO Y PLOMO POR ALFALFA Y PASTO OVILLO Flores-Tena, Francisco J. Muñoz-Salas, Edna M. Morquecho-Buendía, Ofelia Medicago sativa Dactylis glomerata heavy metals environmental pollution public health Medicago sativa Dactylis glomerata metales pesados contaminación ambiental salud pública The effluent of the sewage treatment plant of the City of Aguascalientes contains chromium and lead. This effluent is used to irrigate alfalfa (Medicago sativa) and orchard grass (Dactylis glomerata). The present study was carried out to evaluate the uptake of both metals by the two mentioned species. Plots were sown with alfalfa and orchard grass and irrigated with solutions containing 6, 12 or 24 mg L-1 of chromium, and 5, 10 or 20 mg L-1 of lead when seedlings were three weeks old. The irrigation treatments were repeated every two weeks, during 4 months. Soil and plants samples were collected at different growth stages and digested with nitric acid for chromium and lead determination. Metals in solution were determined by atomic absorption spectrophotometry. Chromium uptake by orchard grass was higher than by alfalfa, and uptake was a function of the amount applied. Chromium content of orchard grass roots was twice that of the aboveground portion, however, in alfalfa, this ratio was closer to equality. Lead uptake by these species was less than that of chromium. Orchard grass accumulated more lead in the roots than in the above ground portion, however, the opposite was true in the case of alfalfa. La Ciudad de Aguascalientes utiliza el efluente de su planta tratadora de aguas negras para irrigar cultivos como alfalfa (Medicago sativa) y pasto ovillo (Dactylis glomerata). Este efluente contiene cromo y plomo, que son tóxicos. El objetivo del presente estudio fue determinar la absorción de esos metales por las especies mencionadas. Parcelas sembradas con alfalfa y pasto ovillo fueron regadas tres semanas después de establecidas, con soluciones que contenían concentraciones crecientes de cromo (6, 12 y 24 mg L-1) y de plomo (5, 10 y 20 mg L-1) y, posteriormente, cada 2 semanas durante casi 4 meses. Se tomaron muestras de planta y suelo en diferentes etapas del periodo de crecimiento, las que una vez secas y molidas se trataron con ácido nítrico para luego determinarles su concentración de cromo y plomo por espectrofotometría de absorción atómica. El cromo fue absorbido desde el suelo en mayor cantidad por el pasto ovillo que por la alfalfa y la absorción fue función de la cantidad aplicada. En las raíces del pasto ovillo se encontró aproximadamente el doble de cromo que en la parte aérea, en tanto que en alfalfa la relación fue más estrecha. El plomo fue absorbido en menor cantidad que el cromo y el pasto ovillo lo acumuló más en las raíces que en la porción aérea, pero ocurrió lo contrario en la alfalfa. Colegio de Postgraduados 1999-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1623 Agrociencia; Vol. 33 No. 4 (1999): 1999-oct-dic; 381-388 Agrociencia; Vol. 33 Núm. 4 (1999): 1999-oct-dic; 381-388 2521-9766 1405-3195 spa https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1623/1623 |
| institution |
COLPOS |
| collection |
OJS |
| country |
México |
| countrycode |
MX |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-agrociencia-mx |
| tag |
revista |
| region |
America del Norte |
| libraryname |
Departamento de documentación y biblioteca de COLPOS |
| language |
spa |
| format |
Digital |
| author |
Flores-Tena, Francisco J. Muñoz-Salas, Edna M. Morquecho-Buendía, Ofelia |
| spellingShingle |
Flores-Tena, Francisco J. Muñoz-Salas, Edna M. Morquecho-Buendía, Ofelia CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS |
| author_facet |
Flores-Tena, Francisco J. Muñoz-Salas, Edna M. Morquecho-Buendía, Ofelia |
| author_sort |
Flores-Tena, Francisco J. |
| title |
CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS |
| title_short |
CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS |
| title_full |
CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS |
| title_fullStr |
CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS |
| title_full_unstemmed |
CHROMIUM AND LEAD UPTAKE BY ALFALFA AND ORCHARD GRASS |
| title_sort |
chromium and lead uptake by alfalfa and orchard grass |
| description |
The effluent of the sewage treatment plant of the City of Aguascalientes contains chromium and lead. This effluent is used to irrigate alfalfa (Medicago sativa) and
orchard grass (Dactylis glomerata). The present study was carried out to evaluate the uptake of both metals by the two mentioned species. Plots were sown with alfalfa and orchard grass and
irrigated with solutions containing 6, 12 or 24 mg L-1 of chromium, and 5, 10 or 20 mg L-1 of lead when seedlings were three weeks old. The irrigation treatments were repeated every two
weeks, during 4 months. Soil and plants samples were collected at different growth stages and digested with nitric acid for chromium and lead determination. Metals in solution were determined
by atomic absorption spectrophotometry. Chromium uptake by orchard grass was higher than by alfalfa, and uptake was a function of the amount applied. Chromium content of orchard grass roots
was twice that of the aboveground portion, however, in alfalfa, this ratio was closer to equality. Lead uptake by these species was less than that of chromium. Orchard grass accumulated more
lead in the roots than in the above ground portion, however, the opposite was true in the case of alfalfa. |
| publisher |
Colegio de Postgraduados |
| publishDate |
1999 |
| url |
https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1623 |
| work_keys_str_mv |
AT florestenafranciscoj chromiumandleaduptakebyalfalfaandorchardgrass AT munozsalasednam chromiumandleaduptakebyalfalfaandorchardgrass AT morquechobuendiaofelia chromiumandleaduptakebyalfalfaandorchardgrass AT florestenafranciscoj absorciondecromoyplomoporalfalfaypastoovillo AT munozsalasednam absorciondecromoyplomoporalfalfaypastoovillo AT morquechobuendiaofelia absorciondecromoyplomoporalfalfaypastoovillo |
| _version_ |
1807208686185086976 |