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1. Accuracy and suitability of selected sampling methods within conifer dominated riparian zones

Description:
Includes references
Author:
Marquardt, Theresa , Temesgen, Hailemariam , Anderson, Paul D.
Subject:
coniferous forests , riparian areas , riparian forests , sampling , accuracy , stand structure , monitoring , conifers , Pseudotsuga menziesii , tree and stand measurements , forest stands , equations , streams , riparian buffers , forest trees , stand characteristics , overstory , stand density , basal area , height , diameter , methodology , quantitative analysis , Northwestern United States , Oregon
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2010

2. Natural rubber quantification in sunflower using an automated solvent extractor

Description:
Includes references
Author:
Pearson, C.H. , Cornish, K. , McMahan, C.M. , Rath, D.J. , Whalen, M.
Subject:
Helianthus annuus , rubber , leaves , molecular weight , quantitative analysis , methodology , extraction , solvents , repeatability , acetone , resins , methanol , chlorophyll , hexane , temperature , optimization , sand , grinding
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2010

3. Tillage effects on intracellular and extracellular soil urease activities determined by an improved chloroform fumigation method

Description:
Includes references
Author:
Qin, Shuping , Hu, Chunsheng , Wang, Yuying , Li, Xiaoxin , He, Xinhua
Subject:
soil chemistry , ammonia , quantitative analysis , urease , enzyme activity , no-tillage , reduced tillage , plowing , extracellular space , methodology , soil fumigation , chloroform , protein degradation , proteinases , denaturation , surface layers , soil depth , soil organic carbon , soil microorganisms , microbial activity , soil quality , China
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2010