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Subjects nitrogen Remove constraint nitrogen: nitrogen Year 2007 Remove constraint 2007: 2007
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1. A Farm-Scale Test of Nitrogen Assimilation by Vegetated Buffer Systems Receiving Swine Lagoon Effluent by Overland Flow

Description:
Includes references
Author:
Hubbard, R.K. , Newton, G.L. , Ruter, J.M.
Subject:
pig manure , waste lagoons , effluents , land application , filter strips , vegetation , grasses , Pinus , pollution control , nitrogen , nutrient uptake , slope , overland flow , nitrate nitrogen , water pollution , groundwater contamination , Georgia
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

2. Afternoon harvest increases readily fermentable carbohydrate concentration and voluntary intake of gamagrass and switchgrass baleage by beef steers

Description:
Includes references
Author:
Huntington, G.B. , Burns, J.C.
Subject:
beef cattle , steers , forage grasses , hay , harvesting , diurnal variation , carbohydrate content , feed intake , cattle feeding , dry matter intake , nitrogen balance , mastication , starch , monosaccharides , lactic acid , pH , ethanol , acetic acid , butyric acid , propionic acid , nutrient retention , nitrogen , nutrient intake
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

3. Air pollution and climate gradients in western Oregon and Washington indicated by epiphytic macrolichens

Description:
Includes references
Author:
Geiser, L.H. , Neitlich, P.N.
Subject:
air pollution , forests , environmental monitoring , indicator species , species diversity , plant communities , climate change , climate models , simulation models , epiphytes , lichens , plant response , ammonia , atmospheric deposition , nitrogen , sulfur , air quality , bioavailability , Oregon , Washington
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

4. An Algorithm for Corn Nitrogen Recommendations Using a Chlorophyll Meter Based Sufficiency Index

Description:
Includes references
Author:
Varvel, G.E. , Wilhelm, W.W. , Shanahan, J.F. , Schepers, J.S.
Subject:
Zea mays , corn , nitrogen , plant nutrition , nitrogen fertilizers , fertilizer requirements , nutrient use efficiency , chlorophyll , grain yield , cropping systems , cultivars , chemical constituents of plants , Nebraska
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

5. Assessing changes in soil microbial communities and carbon mineralization in Bt and non-Bt corn residue-amended soils

Description:
Includes references
Author:
Fang, M. , Motavalli, P.P. , Kremer, R.J. , Nelson, K.A.
Subject:
soil bacteria , Zea mays , transgenic plants , crop residues , lignin , soil texture , sampling , duration , carbon , mineralization , biodegradation , carbon dioxide , soil respiration , microbial activity , nitrogen , gel electrophoresis
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

6. Assessment of Vegetation Stress Using Reflectance or Fluorescence Measurements

Description:
Includes references
Author:
Campbell, P.K.E. , Middleton, E.M. , McMurtrey, J.E. , Corp, L.A. , Chappelle, E.W.
Subject:
plant stress , detection , remote sensing , corn , nitrogen , nutrient deficiencies , nutrient excess , soybeans , Glycine max , carbon dioxide , elevated atmospheric gases , ozone , air pollution , Acer rubrum , ultraviolet radiation , leaves , fluorescence , reflectance , spectral analysis , hyperspectral imagery , analytical methods , Zea mays
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

7. Atmospheric deposition inputs and effects on lichen chemistry and indicator species in the Columbia River Gorge, USA

Description:
Includes references
Author:
Fenn, M.E. , Geiser, L. , Bachman, R. , Blubaugh, T.J. , Bytnerowicz, A.
Subject:
atmospheric deposition , plant biochemistry , lichens , indicator species , national forests , fog (meteorology) , samplers , spatial variation , precipitation , throughfall , air pollution , particulates , nitrogen , sulfur , point source pollution , pH , sulfur dioxide , ammonia , community structure , acid deposition , nitrates , sulfates , Washington , Oregon
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

8. Belowground competition and the response of developing forest communities to atmospheric CO₂ and O₃

Description:
Includes references
Author:
Zak, Donald R. , Holmes, William E. , Pregitzer, Kurt S. , King, John S. , Ellsworth, David S. , Kubiske, Mark E.
Subject:
nitrogen , soil nutrients , elevated atmospheric gases , ozone , carbon dioxide , nutrient uptake , plant competition , forest trees , Betula papyrifera , Populus tremuloides , temperate forests , stand composition , genotype , species differences , tree growth , forest communities , greenhouse gases , stable isotopes , isotope labeling , Wisconsin
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

9. Carbon and nitrogen mineralization of non-composted and composted municipal solid waste in sandy soils

Description:
In the special issue: Organic wastes in soils: Biogeochemical and environmental aspects / edited by C.E. Clapp, M.H.B. Hayes and C. Ciavatta. Paper presented at the Second General Annual Conference of European Geosciences Union, Soil System Sciences Division, Session SSS12, Recycling of Organic Wastes in Soils: Biochemical and Environmental Issues. held April 24-29, 2005, Vienna, Austria.
Author:
Busby, R.R. , Torbert, H.A. , Gebhart, D.L.
Subject:
sandy soils , carbon , nitrogen , mineralization , MSW composts , municipal solid waste , soil organic matter , application rate , physicochemical properties
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

10. Changes in Canopy Processes Following Whole-Forest Canopy Nitrogen Fertilization of a Mature Spruce-Hemlock Forest

Description:
Includes references
Author:
Gaige, E. , Dail, D. B. , Hollinger, D. Y. , Davidson, E. A. , Fernandez, I. J. , Sievering, H. , White, A. , Halteman, W.
Subject:
coniferous forests , overstory , nitrogen , nitrate nitrogen , ammonium nitrogen , forest trees , stemflow , throughfall , precipitation , atmospheric deposition , nutrient uptake , nutrient retention , nutrient availability , spraying , fertilizer application , radiolabeling , Maine
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007