Donald A. Graetz

Professor Emeritus
Environmental Soil Biochemistry

DEPARTMENTAL RESEARCH AREAS
Management of Nutrients, Pesticides, and Wastes
Soil Quality/Ecosystem Services
Wetlands and Aquatic Systems

RESEARCH FOCUS
Studies elemental (N, P, S, C) cycling in wetland soils, lake sediments, and poorly-drained and flooded soils are used to evaluate environmental problems associated with these elements. Research emphasizes environmental problems such as determining the ecosystem assimilative capacity for municipal and animal wastes.

SELECT PUBLICATIONS
Hanselman, T.A., D. A. Graetz, and T.A. Obreza. 2004. A comparison of In Situ methods for measuring net nitrogen mineralization rates of organic soil amendments. J. Environ. Qual. 33:1098-1105.

Hanselman, T. A., D.A. Graetz, and A. C. Wilke. 2004. Comparison of three enzyme immunoassays for measuring 17B-estradiol in flushed dairy manure wastewater. J. Environ. Qual. 33:1919-1923.

Nair, V. D. and D. A. Graetz. 2004. Agroforestry as an approach to minimizing nutrient loss from heavily fertilized soils: The Florida experience. Agroforestry Systems 61: 269-279.

Nair, V. D., K. M. Portier, D. A. Graetz, and M. L. Walker. 2004. An environmental threshold for degree of phosphorus saturation in sandy soils. J. Environ. Qual. 33:107-113.

Hanselman, T. A., D.A. Graetz, and A. C. Wilke. 2003. Fate of poultry manure estrogens in soils: A review. Soil Crop Sci. Soc. Florida Proc. 62-8-12.

Hanselman, T. A., D. A. Graetz, and A. C. Wilke. 2003. Manure-borne estrogens potential environmental contaminants: A Review. Environ. Sci. Tech. 37:5471-5478.

Mattos, D., D.A. Graetz, and A. K. Alva. 2003. Biomass distribution and 15-N partitioning in citrus trees on a sandy Entisol. Soil Sci. Soc. Am. J. 67:555-563.

Mattos, D. Jr., a. K. Alva, S. Paramasivam, and D. A. Graetz. 2003. Nitrogen volatilization and mineralization in a sandy Entisol of Florida under citrus. Comm. Soil Science Plant Analysis 34:1803-1824.

Nair, V. D., D.A. Graetz and D. O. Dooley. 2003. Phosphorus release characteristics of manure and manure-impacted soils. Food, Agriculture and Environment 1:217-223.

Wilson, S. B., P. J. Stoffella, and D.A. Graetz. 2003. Compost amended media and irrigation systems influence on containerized perennial Salvia. J. Am. Soc. Hort. Sci. 128:260- 268.

Macoon, B. K. R. Woodard. L.E. Sollenberger, E.C. French, K.M. Portier, D.A. Graetz, G. M. Prine, and H.H. Van Horn, jr. 2002. Dairy effluent effects on herbage yield and nutritive value of forage cropping systems. Agron. J. 94:1043-1049.

Nair, V.D. and D. A. Graetz. 2002. Phosphorus saturation in Spodosols impacted by manure. J. Environ. Qual. 31:1279-1285.

Villapando**, R.R. and D.A. Graetz. 2001. Water table effects on phosphorus reactivity and mobility in a dairy manure-impacted spodosol. Ecol. Eng. 18:77-89.

Villapando**, R.R. and D.A. Graetz. 2001. Phosphorus sorption and desorption properties of the spodic horizon from selected Florida spodosols. Soil Sci. Soc. Am. J. 65:331-339.


CONTACT INFORMATION
Soil and Water Science Department, 106 Newell Hall, PO Box 110510, University of Florida, Gainesville, Florida 32611
(352) 392.1803 x 325, (352) 392.3399 fax
email: graetz@ufl.edu
Full Curriculum Vitae