IMPACT OF AGRICULTURAL WASTES COMPOST ON SOME HEAVY METALS CONTENT IN SOIL AND PLANT
HALA AHMED HAFEZ KANDIL;
Abstract
Four pot experiments were carried out to study the effect of some
organic wastes on grown therein.
heavy metals content in two different soils and two plants
- Using organic wastes of sewage sludge (SS), banana and cotton composts
(BC &CC) significantly increased dry weight of spinach and corn plants, heavy metals concentrations in both plants and in the used soils. The efficiency of studied organic wastes on heavy metals concenttations in plants and soils varied in accordance to sources and rates of application and/or the part of the grown plant.
- Incubation of sewage sludge in both soils significantly increased the
extractable Zn, Cu, Ni, Pb and Cd as compared with banana and cotton composts. These results were true under all the incubation periods ofO, 3,
6, 12 and 15 months. The release % of the exttactable heavy metals after
incubation
periods and using the organic wastes (SS, BC, CC) were
greatly higher in Abou-Rawash sandy soil as compared with El-Nobaria sandy calcareous soil.
- The release % of extractable heavy metals differed from soil to other and from metal to another, they took the following order in Abou-Rawash
sandy soil:
Pb > Ni > Cu > Cd > Zn: Ni > Pb > Cu > Cd > Zn and Ni >
Cu > Pb > Cd > Zn as affected with incorporation of mean SS, mean BC+SS44 and mean CC+SS44 treatments, respectively. While in El Nobaria sandy calcareous soil were as follows: Ni > Cd > Pb > Cu > Zn: Ni > Pb > C:d > Cu > Zn and Ni > Cu > C:d > Ph > Zn as affected with
above mentioned treatments.
- The
application of organic wastes increased the availability of plant
nutrient and reduced the ham1full effect of hazardous heavy metals. Generally all the levels of the heavy metals concentrations in plants and soils were in the normal range at the end of the experiments.
organic wastes on grown therein.
heavy metals content in two different soils and two plants
- Using organic wastes of sewage sludge (SS), banana and cotton composts
(BC &CC) significantly increased dry weight of spinach and corn plants, heavy metals concentrations in both plants and in the used soils. The efficiency of studied organic wastes on heavy metals concenttations in plants and soils varied in accordance to sources and rates of application and/or the part of the grown plant.
- Incubation of sewage sludge in both soils significantly increased the
extractable Zn, Cu, Ni, Pb and Cd as compared with banana and cotton composts. These results were true under all the incubation periods ofO, 3,
6, 12 and 15 months. The release % of the exttactable heavy metals after
incubation
periods and using the organic wastes (SS, BC, CC) were
greatly higher in Abou-Rawash sandy soil as compared with El-Nobaria sandy calcareous soil.
- The release % of extractable heavy metals differed from soil to other and from metal to another, they took the following order in Abou-Rawash
sandy soil:
Pb > Ni > Cu > Cd > Zn: Ni > Pb > Cu > Cd > Zn and Ni >
Cu > Pb > Cd > Zn as affected with incorporation of mean SS, mean BC+SS44 and mean CC+SS44 treatments, respectively. While in El Nobaria sandy calcareous soil were as follows: Ni > Cd > Pb > Cu > Zn: Ni > Pb > C:d > Cu > Zn and Ni > Cu > C:d > Ph > Zn as affected with
above mentioned treatments.
- The
application of organic wastes increased the availability of plant
nutrient and reduced the ham1full effect of hazardous heavy metals. Generally all the levels of the heavy metals concentrations in plants and soils were in the normal range at the end of the experiments.
Other data
| Title | IMPACT OF AGRICULTURAL WASTES COMPOST ON SOME HEAVY METALS CONTENT IN SOIL AND PLANT | Other Titles | تأثير المخلفات الزراعية على محتوى الارض والنبا ت من بعض الفلزا ت الثقيلة | Authors | HALA AHMED HAFEZ KANDIL | Issue Date | 2005 |
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