Record ID No. |
2574 |
Author(s) |
Ogiyama S., Suzuki H., Sakamoto K., Inubushi K. , 2010 |
Affiliation |
Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba-shi, Chiba 263-8555, Japan. ogiyama@nirs.go.jp |
Title |
Absorption of zinc and copper by maize and sweet potato in an arable field after pig farmyard manure application - contribution of arbuscular mycorrhizal fungi and effects of wood charcoal application |
Source. Vol.(no):Page |
HortResearch.64:9-18p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Heavy Metals |
Host |
Zea mays (Maize) and Ipomoea batatas (Sweet potato) |
Organism |
Arbuscular Mycorrhiza (AM) |
Country |
Japan, East Asia |
Abstracts |
An open-field container experiment was conducted to determine the effectiveness of maize (Zea mays) and sweet potato (Ipomoea batatas) as phytoremediation agents in removing Zn and Cu from pig farmyard manure (PFM) applied on soils. Hypotheses were tested in soil amended with PFM and wood charcoal to know (1) whether Zn and Cu uptake by the plants are arbuscular mycorrhizal (AM) or wood charcoal dependent; and (2) if the harvestable edible parts of the agricultural crops can still be used. PFM application resulted to higher Zn and Cu in soil and enhanced plant-uptakes of these elements. Removal of Zn and Cu from PFM applied soils using maize is more effective than sweet potato. After maize was harvested, the number of mycorrhizal spores in soil decreased with PFM application. After sweet potato was harvested, the number of spores in soil decreased with both PFM and charcoal application. AM colonization and the number of spores were not always consistent with the absorption of heavy metals in both plants. Relationship between AM fungal activities and charcoal application was also variable. However, Zn and Cu concentration in the edible parts of both plants were not affected by any of the soil amendments tested. These findings suggested that the use of agricultural crops, such as maize and sweet potato, may be useful for the long-term phytoremediation in an arable field without generating risks of higher heavy metal concentrations in edible parts. |