Effect of high levels of nitrilotriacetate on metal uptake by plants grown in soil
Studies were made to determine if the chelating agent nitrilotriacetate (NTA) when applied to soil in large amounts could cause toxicities to plants by resulting in increased availability of heavy metals. NTA at 2500 ppm applied as the Na salt in soil of pH 6 was slightly toxic in bush beans (Phaseolus vulgaris L., var Improved Tendergreen). NTA applications at lower rates resulted in increased concentrations of Fe, Zn, Mn, Cu, Mo, Co, Ni, and Al in leaves of bush beans. Soybeans (Glycine max (L.) Merr. Bragg, var. P154619-5-1) grown in Hacienda loam soil at levels from 100 to 1000 ppm had increased concentrations of several heavy metals and also of Ca, K, and Mg in leaves, but there was no apparent yield decrease. Only slight effects could be expected from concentrations likely to be found in effluent water. 5 references, 2 tables.
- OSTI ID:
- 5301022
- Journal Information:
- Agron. J.; (United States), Journal Name: Agron. J.; (United States) Vol. 66; ISSN AGJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
AMINO ACIDS
CALCIUM
CARBOXYLIC ACIDS
CHELATING AGENTS
COBALT
COPPER
ECOLOGICAL CONCENTRATION
ELEMENTS
GROWTH
IRON
LAND POLLUTION
LEAVES
LEGUMINOSAE
MAGNESIUM
MANGANESE
METALS
MOLYBDENUM
NICKEL
NTA
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHASEOLUS
PLANT GROWTH
PLANTS
POLLUTION
POTASSIUM
TOXICITY
TRANSITION ELEMENTS
UPTAKE
YIELDS
ZINC