Nickel phytotoxicity in relationship to soil pH manipulation and chelating agents. [Zea mays, Glycine max, Phaseolus vulgaris, Hordeum vulgare, Zn, Fe, Cu, Mn]

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Commun. Soil Sci. Plant Anal.; (United States)

DOI:https://doi.org/10.1080/00103627709366770· OSTI ID:7277283

Wallace, A; Romney, E M; Cha, J W; Soufi, S M; Chaudhry, F M

The main objective of this study was to ascertain effects of some edaphic factors on the uptake and influence of Ni on plant growth since Ni is a common trace element contaminant as well as an important component of serpentine soils. Corn (Zea mays L. inbred Ys/sub 1//Ys/sub 1/) was grown in Yolo loam soil amended to give soil pH values of 4.2, 5.6, 7.5, and 8.2. A level of 100 ..mu..g Ni/g soil was not toxic to the corn. Shoot concentrations of Ni increased as soil pH decreased for both application rates of Ni. A level of 250 ..mu..g Ni/g soil decreased yields more at soil pH below 7. Iron, Zn, and Mn levels in shoots did not appear to be directly related to the Ni applications although Fe levels tended to increase as a result of smaller plant size. PI54619-5-1 soybeans (Glycine max L.) were grown in soil at two different pH values (with and without CaCO/sub 3/) and with and without a level of 1000 ..mu..g Ni/g added as the sulfate and thoroughly mixed with the soil and equilibrated for 1 month prior to transplanting the soybeans with and without application of a chelating agent, DTPA (diethylene triamine pentaacetic acid), commonly used to correct Fe deficiency in plants. Plants were killed in the soil of pH 6.2 when the 1000 ..mu..g Ni/g soil was added. The pH 7.2 soil decreased the toxicity of Ni. The DTPA had little effect on yields, but increased the amount of Ni in plants. Nickel decreased the Fe, Zn, Cu, and Mn concentrations of the plants. Stems contained less Ni than did leaves. In another experiment, EDTA (ethylenediamine tetraacetate) greatly increased Ni concentrations in bush beans (Phaseolus vulgaris L. C.V. Improved Tendergreen) and in barley (Hordeum vulgare L. C.V. Atlas 57) grown in Yolo loam soil, and simultaneously increased Fe concentrations. Lime (CaCO/sub 3/ or MgCO/sub 3/) decreased toxicity of Ni in bush beans. DTPA increased Ni transport in bush beans and increased the ratio of Ni in leaves to that in stems at soil pH 7.5 and 8.2, but not at pH 4.0 and 5.8.

• Research Organization: Univ. of California, Los Angeles
• OSTI ID: 7277283
• Journal Information: Commun. Soil Sci. Plant Anal.; (United States), Journal Name: Commun. Soil Sci. Plant Anal.; (United States) Vol. 8:9; ISSN CSOSA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
553000 -- Agriculture & Food Technology
60 APPLIED LIFE SCIENCES
AMINO ACIDS
BARLEY
BIOLOGICAL EFFECTS
BIOMASS
CARBOXYLIC ACIDS
CEREALS
CHELATING AGENTS
CONTAMINATION
COPPER
DRUGS
DTPA
ECOLOGICAL CONCENTRATION
EDTA
ELEMENTS
ENERGY SOURCES
FOOD
GRAMINEAE
GRASS
IRON
LEGUMINOSAE
MAIZE
MANGANESE
METALS
NICKEL
ORGANIC ACIDS
ORGANIC COMPOUNDS
PH VALUE
PHASEOLUS
PLANTS
RADIOPROTECTIVE SUBSTANCES
RENEWABLE ENERGY SOURCES
RESPONSE MODIFYING FACTORS
SOILS
SOYBEANS
TOXICITY
TRANSITION ELEMENTS
VEGETABLES
ZINC