Page Banner

United States Department of Agriculture

Agricultural Research Service

Related Topics

Richard W. Zobel

Plant Physiologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Response of forage chicory seedlings to available soil phosphorus in two soils in a controlled environment - (Peer Reviewed Journal)
Cassida, K.A., Foster, J.G., Gonzalez, J.M., Zobel, R.W., Sanderson, M.A. 2013. Response of forage chicory seedlings to available soil phosphorus in two soils in a controlled environment. Communications in Soil Science and Plant Analysis. 44:1992-2007.
Lolium pereene L. root systems are a collection of Gaussian curve shaped meso diameter class length distributions - (Peer Reviewed Journal)
Zobel, R.W. 2012. Lolium pereene L. root systems are a collection of Gaussian curve shaped meso diameter class length distributions. Plant and Soil. DOI:10.1007/s11104-012-1298-0.
Available soil phosphorus affects herbage yield and stand persistence in forage chicory - (Peer Reviewed Journal)
Cassida, K.A., Foster, J.G., Gonzalez, J.M., Zobel, R.W., Sanderson, M.A. 2012. Available soil phosphorus affects herbage yield and stand persistence in forage chicory. Agronomy Journal. 104:807-816.
Inherent agricultural constraints in Allegheny Plateau soils - (Peer Reviewed Journal)
Zobel, R.W. 2012. Inherent agricultural constraints in Allegheny Plateau soils. Agronomy Journal. 104:493-496.
Inherent agricultural constraints in Allegheny Plateau soils - (Other)
Zobel, R.W. 2012. Inherent agricultural constraints in Allegheny Plateau soils. Agronomy Journal. 104:493-496.
Morphological response of forage chicory fine roots to manipulated soil phosphorus levels - (Peer Reviewed Journal)
Zobel, R.W., Cassida, K.A., Kinraide, T.B., Gonzalez, J.L., Foster, J.G. 2013. Morphological response of forage chicory fine roots to manipulated soil phosphorus levels. Journal of Plant Nutrition. 36:1901-1914.
Using soil E horizon in salvaged topsoil material - effect on soil texture - (Peer Reviewed Journal)
Hass, A., Zobel, R.W. 2011. Using soil E horizon in salvaged topsoil material - effect on soil texture. Soil Use and Management. DOI: 10.111/j.1475-2743.2011.00361.x.
A developmental genetic basis for defining root classes - (Review Article)
Zobel, R.W. 2011. A developmental genetic basis for defining root classes. Crop Science. 51:1410-1413.
Modeling Lolium perenne L. roots in the presence of empirical black holes - (Book / Chapter) - (12-Oct-10)
Reducing compaction effort and incorporating air permeability in Proctor testing for design of urban green spaces on cohesive soils - (Peer Reviewed Journal)
Ibrahim, A.M., Persaud, N., Zobel, R.W., Hass, A. 2010. Reducing compaction effort and incorporating air permeability in Proctor testing for design of urban green spaces on cohesive soils. Journal of Soil Science and Environmental Management. 1(1):021-029.
A Plant Root System Architectural Taxonomy: a Framework for Root Nomenclature - (Peer Reviewed Journal)
Zobel, R.W., Waisel, Y. 2010. A PLANT ROOT SYSTEM ARCHITECTURAL TAXONOMY: A FRAMEWORK FOR ROOT NOMENCLATURE. Plant Biosystems. 144(2):507-512.
Evaluation of Native Warm-Season Grass Cultivars for Riparian Zones - (Peer Reviewed Journal)
Skinner, R.H., Zobel, R.W., van der Grinten, M., Skaradek, W. 2009. Evaluation of native warm-season grass cultivars for riparian zones. Journal of Soil and Water Conservation. 64:413-422.
Hardware and software efficacy in assessment of fine root diameter distributions - (Peer Reviewed Journal)
Zobel, R.W. 2008. Hardware and software efficacy in assessment of fine root diameter distributions. Computers and Electronics in Agriculture. 60:178-189.
Yeild Nutrient Uptake and Soil Chemical Properties As Influenced by Liming and Boron Application in Common Bean in Notilage System - (Peer Reviewed Journal)
Fageria, N.K., Baligar, V.C., Zobel, R.W. 2007. Yeild nutrient uptake and soil chemical properties as influenced by liming and boron application in common bean in notilage system. Communications in Soil Science and Plant Analysis. 38:1-17.
Fine root diameters can change in response to changes in nutrient concentrations. - (Peer Reviewed Journal)
Zobel, R.W., Baligar, V.C., Kinraide, T.B. 2007. Fine root diameters can change in response to changes in nutrient concentrations. Plant and Soil Journal. 297:243-254.
Do You Know What Class Your Roots Are In? and Why It Matters? - (Abstract Only)
Zobel, R.W. 2006. Do you know what class your roots are in? and why it matters?. 23rd Annual Missouri Symposium: Plant roots from genes to form and function. Columbia, MO. May 24-26, 2006. Abstracts volume.
Differential Root Morphology Response to No versus High Phosphorus, in Three Hydroponically Grown Forage Chicory Cultivars - (Peer Reviewed Journal)
Zobel, R.W., Alloush, G.A., Belesky, D.P. 2006. Differential Root Morphology Response to No versus High Phosphorus, in Three Hydroponically Grown Forage Chicory Cultivars. Environmental and Experimental Botany. 57(1-2):201-208.
Differential root morphology response to no versus high phosphorus, in three hydroponically grown forage chicory cultivars - (Peer Reviewed Journal)
Zobel, R.W., Alloush, G., Belesky, D.P. 2006. Differential root morphology response to no versus high phosphorus, in three hydroponically grown forage chicory cultivars. Environmental and Experimental Botany. 57:201-208.
A Comparison of 3 Computer Based Root Diameter Measurement Systems – Efficacy with Diameters Less Than 0.5 Mm - (Abstract Only)
Zobel, R.W. 2005. A comparison of 3 computer based root diameter measurement systems – efficacy with diameters less than 0.5 mm. American Society of Agronomy Annual Meetings, Salt Lake City, UT. November 6-10, 2005. Abstracts CD.
Fine Root (< 0.5 Mm Diameter) Adaptation to Nutrient Stress - (Abstract Only)
Zobel, R.W. 2005. Fine root (< 0.5 mm diameter) adaptation to nutrient stress. American Society of Agronomy Annual Meetings. Salt Lake City, UT. November 6-10, 2005. Abstracts CD.
Organic Acid Secretion As a Mechanism of Aluminum Tolerance. a Model Incorporating the Root Cortex, Epidermis, and the External Unstirred Layer - (Peer Reviewed Journal)
Kinraide, T.B., Parker, D.R., Zobel, R.W. 2005. Organic acid secretion as a mechanism of aluminum tolerance. A model incorporating the root cortex, epidermis, and the external unstirred layer. Journal of Experimental Botany, 56:1853-1865.
Response of Mycorrhizal Switchgrass to Phosphorus Fractions in Acid Soil - (Peer Reviewed Journal)
Clark, R.B., Baligar, V.C., Zobel, R.W. 2005. Response of mycorrhizal switchgrass to phosphorus fractions in acid soil. Communications in Soil Science and Plant Analysis. 36(9-10): 1337-1359.
Primary and Secondary Root Systems - (Book / Chapter)
Zobel, R.W. 2005. Primary and Secondary Root Systems. In: Zobel, R.W. and Wright S.A. American Society of Agronomy Monograph Series 48. Agronomy Society of America, Madison, WI, p. 3-14.
Tertiary Root Systems - (Book / Chapter)
Zobel, R.W. 2005. Tertiary Root Systems. In: Zobel, R.W. and Wright, S.A. American Society of Agronomy Monograph Series 48. Agronomy Society of America, Madison, Wisconsin. p 35-56.
Nutrient Film Technique to Evaluate Clipping Height Effects on Orchardgrass Shoot Biomass Production and Root Dynamics - (Proceedings)
Ritchey, K.D., Zobel, R.W., Snuffer, J.D. 2004. Nutrient film technique to evaluate clipping height effects on orchardgrass shoot biomass production and root dynamics. The 2004 Conference of the American Forage and Grasslands Council Conference Proceedings, June 12-16, 2004, Roanoke VA. Vol 13, pp 424-428.
Aerenchyma Development in Native Warm-Season Grass Cultivars for Esstablishing Buffers Along Grazing Land Riparian Corridors - (Abstract Only)
Zobel, R.W., Skinner, R.H., Skaradek, W. 2004. Aerenchyma development in native warm-season grass cultivars for esstablishing buffers along grazing land riparian corridors. Proceedings of the National Conference on Grazing Lands [CD-ROM].
Fine-Roots of Plants - a Revisionist's Perspective - (Other)
Zobel, R.W. 2003. Fine-roots of plants - a revisionist's perspective. New Phytologist.
Aerenchyma Development in Native Warm-Season Grass Cultivars - (Proceedings)
Skinner, R.H., Zobel, R.W., Skaradek, W. 2004. Aerenchyma development in native warm-season grass cultivars. Proceedings of the 3rd. Eastern Native Grass Symposium. p. 48-52.
Environmental Impacts on Sesquiterpene Lactone Composition of Forage Chicory - (Proceedings)
FOSTER, J.G., BELESKY, D.P., ZOBEL, R.W., CLAPHAM, W.M., ALLOUSH, G.A., LABREVEUX, M.E., HALL, M.E., SANDERSON, M.A., SKINNER, R.H. ENVIRONMENTAL IMPACTS ON SESQUITERPENE LACTONE COMPOSITION OF FORAGE CHICORY. AMERICAN FORAGE AND GRASSLAND COUNCIL PROCEEDINGS. 2003. v. 12. p. 288-292.
Plant Roots, the Hidden Half - (Review Article)
ZOBEL, R.W. PLANT ROOTS: THE HIDDEN HALF. CROP SCIENCE. 2003. V. 43.
Sensitivity Analysis of Computer Based Diameter Measurement from Digital Images - (Peer Reviewed Journal)
ZOBEL, R.W. SENSITIVITY ANALYSIS OF COMPUTER BASED DIAMETER MEASUREMENT FROM DIGITAL IMAGES. CROP SCIENCE. 2003. V. 43. P. 583-591.
Aerenchyma Development in Native Warm-Season Grass Cultivars - (Abstract Only)
SKINNER, R.H., ZOBEL, R.W., SKARADEK, W. AERENCHYMA DEVELOPMENT IN NATIVE WARM-SEASON GRASS CULTIVARS. MEETING ABSTRACT. 2002.
The Formation of Adventitious Roots on Root Axes Is a Widespread Occurrence in Field-Grown Dicotyledonous Plants - (Peer Reviewed Journal)
PAOLILLO, D., ZOBEL, R.W. THE FORMATION OF ADVENTITIOUS ROOTS ON ROOT AXES IS A WIDESPREAD OCCURRENCE IN FIELD-GROWN DICOTYLEDONOUS PLANTS. AMERICAN JOURNAL OF BOTANY. 2002. V. 89. P. 1361-1372.
Identifying Megaenvironments and Targeting Genotypes - (Peer Reviewed Journal) - (24-Nov-96)
Eastern Gamagrass (Tripsacum Dactyloides) Root Penetration and Chemical Properties of Claypan Soils - (Abstract Only) - (17-Jul-96)
Rhizosphere Climate (Rhizoclimate) and Plant Root Systems: We Need a More Systematic Approach - (Government Publication) - (27-Nov-95)
Gravitropic Responses of Five Maize Hybrid Roots to Temperature - (Peer Reviewed Journal) - (31-Oct-95)
Genetic and Environmental Aspects of Seedling Stress - (Review Article) - (20-Aug-95)
A Method for Studying the Effects of Soil Aggregrate Size and Density - (Peer Reviewed Journal) - (24-May-95)
Last Modified: 11/27/2014
Footer Content Back to Top of Page