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Subjects nitrogen Remove constraint nitrogen: nitrogen Subjects nitrogen Remove constraint nitrogen: nitrogen Year 2005 Remove constraint 2005: 2005
Displaying items 1 - 10 of 106 start over

1. A beef herd model for simulating feed intake, animal performance, and manure excretion in farm systems

Description:
Includes references
Author:
Rotz, C.A. , Buckmaster, D.R. , Comerford, J.W.
Subject:
beef cows , simulation models , feed intake , animal performance , cattle manure , excretion , cattle production , cattle feeding , dietary fiber , energy requirements , protein requirement , finishing , calves , heifers , stocker cattle , environmental impact , dietary minerals , animal growth , nitrogen , potassium , phosphorus , particle size distribution , model validation , integrated agricultural systems
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

2. A new system to monitor water and nutrient use in pot-in-pot nursery production systems

Description:
Includes references
Author:
Zhu, H. , Krause, C.R. , Zondag, R.H. , Brazee, R.D. , Derksen, R.C. , Reding, M.E. , Fausey, N.R.
Subject:
plant nurseries , nursery crops , pot culture , horticultural crops , ornamental woody plants , water use , water use efficiency , nutrient use efficiency , plant nutrition , water quality , irrigation , drainage , soil water content , soil temperature , leachates , nitrogen , phosphorus , potassium
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

3. A possible role for saprotrophic microfungi in the N nutrition of ectomycorrhizal Pinus resinosa

Description:
Includes references
Author:
Wu, T. , Kabir, Z. , Koide, R.T.
Subject:
saprophytes , forest soils , Pinus resinosa , forest trees , soil fungi , ectomycorrhizae , mycorrhizal fungi , nitrogen , nutrient availability , amino acids , glucosamine , mineralization , carbon nitrogen ratio , trophic relationships
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

4. Alfalfa and reed canarygrass response to midsummer manure application

Description:
Includes references
Author:
Lamb, J.F.S. , Russelle, M.P. , Schmitt, M.A.
Subject:
Medicago sativa , alfalfa , forage crops , Phalaris arundinacea , forage grasses , pig manure , cultivars , application rate , genotype-environment interaction , dry matter accumulation , crop yield , nitrogen , nutrient availability , organic matter , nitrogen fixation , growing season
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

5. Alternate satellite models for estimation of sugar beet residue nitrogen credit

Description:
Includes references
Author:
Beeri, O. , Phillips, R. , Carson, P. , Liebig, M.
Subject:
sugar beet , Beta vulgaris , agroecosystems , nitrogen , nutrient balance , carbon nitrogen ratio , crop residues , hyperspectral imagery , multispectral imagery , North Dakota
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

6. Ammonia and gaseous nitrogen emissions from a commercial beef cattle feedyard estimated using the flux-gradient method and N:P ratio analysis

Description:
Includes references
Author:
Todd, R.W. , Cole, N.A. , Harper, L.A. , Flesch, T.K. , Baek, B.H.
Subject:
gas emissions , air pollution , beef cattle , feedlots , ammonia , nitrogen , estimation , meteorology and climatology , cattle manure , feeds , summer , winter , wind speed , air temperature , chemiluminescence , phosphorus , diet , body weight , Texas , High Plains (United States)
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

7. Application of Molecular Markers in Breeding for Nitrogen Use Efficiency

Description:
In the special issue: Enhancing the efficiency of nitrogen utilization in plants / edited by S.S. Goyal, R. Tischner and A.S. Basra.
Author:
Agrama, H.A.
Subject:
plants , literature reviews , plant nutrition , nitrogen , nutrient use efficiency , plant breeding , artificial selection , selection criteria , genetic markers , biomarkers , dry matter accumulation , Zea mays , corn , grain yield , nutrient availability , marker-assisted selection , chromosome mapping , quantitative trait loci , plant morphology , agronomic traits , yield components
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

8. Assessing Muscle Mass

Description:
Includes references
Author:
Lukaski, Henry C.
Subject:
skeletal muscle , muscle tissues , body composition , in vivo studies , anthropometric measurements , metabolites , chemical analysis , creatinine , histidine , biomarkers , computed tomography , magnetic resonance imaging , dual-energy X-ray absorptiometry , potassium , nitrogen , models , bioelectrical impedance , human health
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

9. Assimilation versus accumulation of macro- and micronutrients in soils: relations to livestock and poultry feeding operations

Description:
Includes references
Author:
Cole, N.A. , Schwartz, R.C. , Todd, R.W.
Subject:
poultry production , animal feeding operations , concentrated animal feeding operations , livestock production , nutrient management , animal manures , sustainable agriculture , nitrogen , phosphorus , nutrient retention , animal manure management , reduced tillage , conservation buffers , leaching , agricultural runoff , spatial variation , environmental protection , environmental impact , literature reviews , United States
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

10. Autotrophic Ammonia-Oxidizing Bacteria Contribute Minimally to Nitrification in a Nitrogen-Impacted Forested Ecosystem

Description:
Includes references
Author:
Jordan, Fiona L. , Cantera, J. Jason L. , Fenn, Mark E. , Stein, Lisa Y.
Subject:
photosynthetic bacteria , atmospheric deposition , forest soils , nitrogen , mineralization , nitrification , nitrates , leaching , soil pH , coniferous forests , soil microorganisms , microbial activity , Mediterranean climate , California
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005