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Subjects nitrogen Remove constraint nitrogen: nitrogen Subjects phosphorus Remove constraint phosphorus: phosphorus Year 2005 Remove constraint 2005: 2005
Displaying items 1 - 10 of 29 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. 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

4. 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

5. Biofuel component concentrations and yields of switchgrass in south central U.S. environments

Description:
Includes references
Author:
Cassida, K.A. , Muir, J.P. , Hussey, M.A. , Read, J.C. , Venuto, B.C. , Ocumpaugh, W.R.
Subject:
Panicum virgatum , biofuels , crop production , crop yield , yield components , genotype , genotype-environment interaction , lignocellulose , nutrient uptake , nitrogen , cellulose , nitrogen content , phosphorus , ecotypes , dry matter accumulation , energy crops , Texas , Arkansas , Louisiana
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

6. Broiler litter as a sole nutrient source for cotton: nitrogen, phosphorus, potassium, calcium, and magnesium concentrations in plant parts

Description:
Includes references
Author:
Tewolde, H. , Sistani, K.R. , Rowe, D.E.
Subject:
Gossypium hirsutum , cotton , fiber crops , poultry manure , fertilizer rates , nitrogen , phosphorus , potassium , calcium , magnesium , plant nutrition , nutrient content , nutrient uptake , nutrient availability , plant growth , nutrient use efficiency , inflorescences , leaves , nutrient excess
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

7. Changes in spectral reflectance of wheat leaves in response to specific macronutrient deficiency

Description:
Includes references
Author:
Ayala-Silva, T. , Beyl, C.A.
Subject:
Triticum aestivum , plant nutrition , nutrient deficiencies , nitrogen , phosphorus , potassium , calcium , magnesium , reflectance , spectral analysis , remote sensing , leaves , chlorophyll , spectroradiometers
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

8. Effect of a temporal carbon gradient on nitrogen and phosphorus dynamics and decomposition during mesophilic composting

Description:
Includes references
Author:
Adler, P.R.
Subject:
Salvelinus alpinus , fish culture , liquid manure , animal manures , composting , composted manure , nitrogen , phosphorus , carbon , degradation , corn stover , sorption , mineralization , waste disposal
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

9. Effect of soil flooding on photosynthesis, carbohydrate partitioning and nutrient uptake in the invasive exotic Lepidium latifolium

Description:
Includes references
Author:
Chen, H. , Qualls, R.G. , Blank, R.R.
Subject:
Lepidium latifolium , invasive species , introduced species , wetland soils , wetland plants , nutrient uptake , photosynthesis , weeds , flooded conditions , riparian areas , flooding tolerance , leaves , carbohydrates , chemical constituents of plants , nitrogen , phosphorus , potassium , zinc , iron , manganese , chemical concentration , nutrients , chlorophyll , roots
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

10. Effects of broiler litter on soybean production and soil nitrogen and phosphorus concentrations

Description:
Includes references
Author:
Adeli, A. , Sistani, K.R. , Rowe, D.E. , Tewolde, H.
Subject:
poultry manure , soil amendments , application rate , Glycine max , soybeans , grain yield , soil fertility , nitrogen , phosphorus , clay loam soils , nitrogen fertilizers , fertilizer application , nitrates , nutrient uptake , nutrient use efficiency , Mississippi
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005