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Most-Read Papers

The most-read papers from April 2018.

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Determining Soil Bulk Density for Carbon Stock Calculations: A Systematic Method Comparison
Katja Walter, AxelDon, Bärbel Tiemeyer and Annette Freibauer
202
Biochar and Soil Physical Properties
Humberto Blanco-Canqui
186
Numerical Solution of Richards’ Equation: A Review of Advances and Challenges
Matthew W. Farthing and Fred L. Ogden
177

Soil Quality: A Concept, Definition, and Framework for Evaluation (A Guest Editorial)
D. L. Karlen, M. J. Mausbach, J. W. Doran, R. G. Cline, R. F. Harris and G. E. Schuman

176
Superabsorbent Polymer Properties and Concentration Effects on Water Retention under Drying Conditions
Jian Yu, J. G. Shi, Xin Ma, P. F. Dang, Y. L. Yan, Amrakh I. Mamedov, Isaac Shainberg and Guy J. Levy
157
Calcium and Magnesium Determinations by EDTA Titrations
B. B. Tucker and L. T. Kurtz
131
History of Chemical Fertilizer Development
Darrell A. Russel and Gerald G. Williams
124
Sources of Variability that Compromise Mineralizable Carbon as a Soil Health Indicator
Jordon Wade, Steven W. Culman, Tunsisa T. Hurisso, Robert O. Miller, Lucas Baker and William R. Horwath
115
Top-Ranked Priority Research Questions for Soil Science in the 21st Century
Julius B. Adewopo, Christine VanZomeren, Rupesh K. Bhomia, Maya Almaraz, Allan R. Bacon, Emily Eggleston, Jonathan D. Judy, Ricky W. Lewis, Mary Lusk, Bradley Miller, Colby Moorberg, Elizabeth Hodges Snyder and Mary Tiedeman
114
Soil Thermal Conductivity Effects of Density, Moisture, Salt Concentration, and Organic Matter
Nidal H. Abu-Hamdeh and Randall C. Reeder

 

112

 

Most-Cited Papers

The most-cited papers based on data from Google Scholar (last updated 5/10/2018).

Article

Citations

A closed-form equation for predicting the hydraulic conductivity of unsaturated soils
M. Th. van Genuchten
19788
Development of a DTPA soil test for zinc, iron, manganese, and copper
W. L. Lindsay and W. A. Norvell
7939
Analysis of factors controlling soil organic matter levels in Great Plains grasslands
W. J. Parton, D. S. Schimel, C. V. Cole and D. S. Ojima
3749
Field-scale variability of soil properties in central Iowa soils
C. A. Cambardella, T. B. Moorman, T. B. Parkin, D. L. Karlen, J. M. Novak, R. F. Turco and A. E. Konopka
3559
Test of an ascorbic acid method for determining phosphorus in water and NaHCO3 extracts from soil
F. S. Watanabe and S. R. Olsen
2309
Particulate soil organic-matter changes across a grassland cultivation sequence
C. A. Cambardella and E. T. Elliott
2046
Changes in inorganic and organic soil phosphorus fractions induced by cultivation practices and by laboratory incubations
M. J. Hedley, J. W. B. Stewart and B. S. Chauhan
1944
Effect of water-filled pore space on carbon dioxide and nitrous oxide production in tilled and nontilled soils
D. M. Linn and J. W. Doran
1932
Soil Organic Carbon Sequestration Rates by Tillage and Crop Rotation 
Tristram O. West and Wilfred M. Post
1842
Nitrogen mineralization potentials of soils
George Stanford and S. J. Smith
1838