Search Results - "NORVELL, W. A."

Solubilization of phosphates and micronutrients by the plant-growth-promoting and biocontrol fungus Trichoderma harzianum Rifai 1295-22 by Altomare, C, Norvell, W.A, Bjorkman, T, Harman, G.E

“…We investigated the capability of the plant-growth-promoting and biocontrol fungus Trichoderma harzianum Rifai 1295-22 (T-22) to solubilize in vitro some…”
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Association of Cadmium in Durum Wheat Grain with Soil Chloride and Chelate‐Extractable Soil Cadmium by Norvell, W. A., Wu, J., Hopkins, D. G., Welch, R. M.

“…Cadmium uptake by food crops needs to be understood in order to limit Cd accumulation in the food chain. Cadmium is a potentially toxic heavy metal with no…”
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Yellowness index: An application of spectral second derivatives to estimate chlorosis of leaves in stressed vegetation by Adams, M. L., Philpot, W. D., Norvell, W. A.

“…This paper introduces yellowness index (YI) as a measure for chlorosis of leaves in stressed plants. YI provides a measure of the change in shape of the…”
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A Survey of Soil Attributes in North Dakota by Landscape Position by Franzen, D. W., Nanna, T., Norvell, W. A.

“…Land surveys of soil attributes can provide valuable information on the geographic distribution of important soil attributes and summarize the levels found…”
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Uptake and retranslocation of leaf‐applied cadmium (109Cd) in diploid, tetraploid and hexaploid wheats by Cakmak, I., Welch, R.M., Hart, J., Norvell, W.A., Oztürk, L., Kochian, L.V.

“…Uptake and retranslocation of leaf‐applied radiolabelled cadmium (109Cd) was studied in three diploid (Triticum monococcum, AA), four tetraploid (Triticum…”
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Improved prediction and mapping of soil copper by kriging with auxiliary data for cation-exchange capacity by WU, J, NORVELL, W. A, HOPKINS, D. G, SMITH, D. B, ULMER, M. G, WELCH, R. M

“…Measurements of Cu or other trace elements in soils are rarely available in sufficient abundance to permit accurate mapping of large areas. In contrast,…”
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Spatial variability of grain cadmium and soil characteristics in a durum wheat field by WU, J, NORVELL, W. A, HOPKINS, D. G, WELCH, R. M

“…The accumulation of Cd in edible crops is undesirable because of potential risks to human health. Agronomic efforts to lower Cd in foods will be more effective…”
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Screening Soybean Cultivars for Resistance to Iron-Deficiency Chlorosis in Culture Solutions Containing Magnesium or Sodium Bicarbonate by Norvell, W.A, Adams, M.L

“…Hydroponic culture solutions containing bicarbonate (HCO3-) may be used to screen crops such as soybeans (Glycine max) for resistance to iron (Fe) deficiency…”
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Cadmium absorption and retention by rats fed durum wheat (Triticum turgidum L. var. durum) grain by House, W. A., Hart, J. J., Norvell, W. A., Welch, R. M.

“…A whole-body radioassay procedure was used to assess the retention and apparent absorption by rats of Cd in kernels of durum wheat (Triticum turgidum L. var…”
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Soil zinc map of the USA using geostatistics and geographic information systems by White, J.G, Welch, R.M, Norvell, W.A

“…The geographic distribution of soil Zn is important to agriculture, nutrition, and health. A map illustrating the total Zn content of soils of the conterminous…”
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Kriging on highly skewed data for DTPA-extractable soil Zn with auxiliary information for pH and organic carbon by Wu, J., Norvell, W.A., Welch, R.M.

“…Knowledge of the distribution of crop-available trace elements in soils is limited by the sparseness of georeferenced data and the inherent variability of the…”
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Influence of varied zinc supply on re-translocation of cadmium (¹⁰⁹Cd) and rubidium (⁸⁶Rb) applied on mature leaf of durum wheat seedlings by Cakmak, I., Welch, R.M., Erenoglu, B., Römheld, V., Norvell, W.A., Kochian, L.V.

“…Effect of varied zinc (Zn) supply (0, 0.1, 1, 5 µM) on re-translocation of radio-labeled cadmium (¹⁰⁹Cd) and rubidium (⁸⁶Rb) from mature leaf to root and other…”
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Effects of nutrient solution zinc activity on net uptake, translocation, and root export of cadmium and zinc by separated sections of intact durum wheat (Triticum turgidum L. var durum) seedling roots by Welch, R.M. (Cornell Univ., Ithaca, NY (USA). US Plant, Soil and Nutrition Lab.), Hart, J.J, Norvell, W.A, Sullivan, L.A, Kochian, L.V

“…Cd accumulation in durum wheat presents a potential health risk to consumers. In an effort to understand the physiological mechanisms involved with Cd…”
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Bathophenanthrolene disulfonic acid and sodium dithionite effectively remove surface-bound iron from Caco-2 cell monolayers by Glahn, R P, Gangloff, M B, Van Campen, D R, Miller, D D, Wien, E M, Norvell, W A

“…Iron uptake by Caco-2 cell monolayers is commonly assessed by incubating the cells under radiolabeled iron solutions, removing the radiolabeled solution,…”
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Speciation and Complexation of Cadmium in Extracted Soil Solutions by Sauvé, Sébastien, Norvell, Wendell A, McBride, Murray, Hendershot, William

“…We report the soil solution speciation of Cd in 64 field-collected contaminated soils containing between 0.1 and 38 mg Cd kg-1. The soils were analyzed for pH…”
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Development of a DTPA Soil Test for Zinc, Iron, Manganese, and Copper by Lindsay, W. L., Norvell, W. A.

“…A DTPA soil test was developed to identify near‐neutral and calcareous soils with insufficient available Zn, Fe, Mn, or Cu for maximum yields of crops. The…”
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Comparison of chelating agents as extractants for metals in diverse soil materials [Connecticut; Colorado; Kentucky; South Carolina] by Norvell, W.A

“…Five chelating agents—DTPA, EDTA, EGTA, HEDTA, and NTA—were compared at pH 5.3 as extractants for Al, Fe, Mn, Zn, Cu, Cd, and Ni in 25 diverse soils…”
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Ferrous iron uptake but not transfer is down-regulated in Caco-2 cells grown in high iron serum-free medium by Gangloff, M B, Lai, C, Van Campen, D R, Miller, D D, Norvell, W A, Glahn, R P

“…Caco-2 cells in culture provide an attractive model for the study of human iron absorption. Because iron status has a marked effect on human iron absorption,…”
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Characterization of Cadmium Binding, Uptake, and Translocation in Intact Seedlings of Bread and Durum Wheat Cultivars by Hart, Jonathan J., Welch, Ross M., Norvell, Wendell A., Lori A. Sullivan, Kochian, Leon V.

“…High Cd content in durum wheat (Triticum turgidum L. var durum) grain grown in the United States and Canada presents potential health and economic problems for…”
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Copper solubility and speciation of in situ contaminated soils : Effects of copper level, pH and organic matter by SAUVE, S, MCBRIDE, M. B, NORVELL, W. A, HENDERSHOT, W. H

“…This study attempts to identify the soil properties controlling the fractionation of copper into various soil pools and determine the influence of pH and metal…”
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