Search Results - "Sommers, L. E."

Degradation of pyridine by Micrococcus luteus isolated from soil by Sims, G.K, Sommers, L.E, Konopka, A

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Cadmium and zinc influx characteristics by intact corn (Zea mays L.) seedlings by MULLINS, G. L., SOMMERS, L. E.

“…Cadmium and zinc uptake parameters were determined for intact corn (Zea mays L.) seedlings grown for 15 and 22 d in nutrient solutions containing levels of Cd…”
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Ammonia Volatilization from Surface‐applied Urea as Affected by Several Phosphoroamide Compounds by Beyrouty, C. A., Sommers, L. E., Nelson, D. W.

“…In an attempt to reduce ammonia (NH3) losses from surface applied urea to ultimately increase plant N use efficiency, a field experiment was conducted to…”
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Determination of Total Phosphorus in Soils: A Rapid Perchloric Acid Digestion Procedure by Sommers, L. E., Nelson, D. W.

“…Extraction and colorimetric methods were evaluated for determining total P in soils. A procedure involving simultaneous digestion of 60 soil samples with…”
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Modeling the plant uptake of cadmium and zinc from soils treated with sewage sludge by Mullins, G.L, Sommers, L.E, Barber, S.A

“…To evaluate models for predicting plant uptake of Zn and Cd, a growth chamber study was conducted with soils collected from research plots in Ohio, Indiana,…”
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Metal speciation in xylem and phloem exudates by MULLINS, G.L., SOMMERS, L.E., HOUSLEY, T.L.

“…Two computer programs based on simultaneous chemical equilibria were compared for calculation of chemical species in xylem exudates. The first program,…”
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Plate-dilution frequency technique for assay of microbial ecology by Harris, R F, Sommers, L E

“…The plate-dilution frequency technique described facilitates simultaneous enumeration of a wide range of physiologically different microorganisms in complex…”
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Carbon Cycling During Sewage Sludge Decomposition in Soils by Terry, R. E., Nelson, D. W., Sommers, L. E.

“…The objectives of this study were to determine the extent and kinetics of sludge decomposition in soil, to evaluate the effects of sludge addition on microbial…”
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Nitrogen Transformations in Sewage Sludge—Amended Soils as Affected by Soil Environmental Factors by Terry, R. E., Nelson, D. W., Sommers, L. E.

“…The objectives of this study were to determine the effects of soil pH, soil moisture tension, sludge application rate, incubation temperature, and…”
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Yield, heavy metal content, and milling and baking properties of soft red winter wheat grown on soils amended with sewage sludge by KIRLEIS, A. W, SOMMERS, L. E, NELSON, D. W

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Use of urease inhibitors and urea fertilizers on winter wheat by Schlegel, AJ, Nelson, DW, Sommers, LE

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Agar dish isopiestic equilibration method for controlling the water potential of solid substrates by Harris, R F, Gardner, W R, Adebayo, A A, Sommers, L E

“…Maintenance of substrate water potential in petri dishes is achieved by using vapor-pressure controlling, solute-amended agar gel discs attached to the inside…”
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Routine preparation of silica gel media using silicate solutions of varying pH by Sommers, L E, Harris, R F

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Sewage sludge proteins as labile carbon and nitrogen sources by Lerch, R.N. (USDA-ARS Cropping Systems and Water Quality Research Unit, Columbia, MO), Barbarick, K.A, Sommers, L.E, Westfall, D.G

“…The study of specific, organic sewage sludge constituents is necessary to augment our knowledge of C and N mineralization in sludge-amended soils. A laboratory…”
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Effect of pH and redox on predicted heavy metal-chelate equilibria in soils by Sommers, L.E, Lindsay, W.L

“…Metal‐chelate stability diagrams were developed as a function of pH and redox to predict the behavior of DTPA, EDTA, CDTA, EGTA, and HEDTA in soils. The metals…”
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Changes in the humic acid fraction of soil resulting from sludge application by Boyd, S.A, Sommers, L.E, Nelson, D.W

“…Humic acids (HA) extracted from sludge, soil, and sludge‐amended soil were characterized by elemental and functional group analyses and visible and infrared…”
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Infrared spectra of sewage sludge fractions: evidence for an amide metal binding site by Boyd, S.A, Sommers, L.E, Nelson, D.W

“…Infrared studies were conducted to qualitatively characterize sewage sludge light (organic) and heavy (inorganic) fractions obtained using a heavy liquid…”
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Plate-Dilution Frequency Technique for Assay of Microbial Ecology1 by Harris, R. F., Sommers, L. E.

“…The plate-dilution frequency technique described facilitates simultaneous enumeration of a wide range of physiologically different microorganisms in complex…”
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Fractionation of Organic Phosphorus in Lake Sediments by Sommers, L. E., Harris, R. F., Williams, J. D. H., Armstrong, D. E., Syers, J. K.

“…The organic phosphorus of 10 Wisconsin lake sediments of diverse properties was fractionated on the basis of extractability and anion exchange properties. The…”
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Heavy metal content of groats and hulls of oats grown on soil treated with sewage sludges [Indiana] by Kirleis A.W, Sommers L.E, Nelson D.W

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