Long Term Nutrient Management/Tillage Experiments
(also see Oklahoma State University Long-Term Research Trials)
American Society of Agronomy Centennial, 2007
PDF file ASA Centennial Calendar
1. BROADBALK EXPERIMENET, ROTHAMSTED RESEARCH.,
Head, Business and Information Services
Hertfordshire AL5 2JQ
Fax: +44 (0) 1582 469688
Initiation date: 1843
The Broadbalk experiment at Rothamsted Research in
It had its first winter-wheat crop sown in autumn 1843, and this crop has been sown and harvested on all, or part, of the field every year since then. The experiment tests the effects of various combinations of inorganic fertiliser (supplying the elements N, P, K, Na and Mg) and farmyard manure on the yield of wheat: a control strip has received no fertiliser or manure since 1843.
2. THE MORROW PLOTS
AW-101 Turner Hall
Initiation date: 1876
The Morrow Plots, which are located in the heart of the Urbana-Champaign campus of the
3. SANBORN FIELDS
J. R. Brown, Professor of Soil
The School of Natural Resources and The Missouri Agriculture Experiment Station,
niversity of Missouri, Columbia, MO 65211 USA
Tel. 314-882-6302 FAX 314-882-4960
Location: Columbia, MO. Boone Co. Lat: 38°49' Long: 92°13'W
Initiation date: Fall 1888
4. THE MAGRUDER PLOTS
Initiation date: 1892
Stated purpose: To evaluate the long-term effects of growing continuous winter wheat on grain yields and soil quality under manure and inorganic fertilizer treatments.
5. THE CULLARS ROTATION
C.C. Mitchell, Department of
Tel 205-844-5489 FAX 205-844-3945
Stated Purpose:The Cullars Rotation was originally established to determine the effect of soil fertilizer amendments (particularly K) on yields of cotton, corn, small grains, and cowpeas in a 3-yr rotation with and without winter legumes. In recent years, the test has been maintained as a 1) field laboratory for students and visitors studying crop nutrient deficiencies, 2) source of soil and plant material for greenhouse and laboratory research, and 3) site for continuous soil test calibration research.
6. PERMANENT TOPDRESSING EXPT (PADDOCKS 1,2,3)
Anna Ridley, Rutherglen Research Institute,
Location: Australia, Victoria, Rutherglen, Rutherglen Research Institute
Initiation date: 1914
Stated purpose: The experiment commenced in 1914 to demonstrate the effect of superphosphate and lime application on the stocking rate of pastures.
7. THE CROP RESIDUE MANAGEMENT EXPERIMENT
Paul E. Rasmussen, Soil Scientist
USDA-ARS, Richard W. Smiley,
Superintendent, Columbia Basin Agricultural Research Center, Oregon State University,
Tel. 503-278-4186 FAX 503-278-4188
Initiation date: 1931
Stated purpose: To investigate the effect of various residue management practices and nitrogen sources on wheat yield and soil quality.
8. LONG TERM NPK FERTILITY STUDY
Alan Schlegel, Agronomist Southwest Research-Extension Center,
Kansas State University, Rt. 1, Box 148 Tribune, KS 67879
Initiation date: 1961
9. LONG-TERM FERTILIZER AND MANURE EXPERIMENT
Maurice L. Vitosh, Department of Crop and Soil Sciences,
Michigan State University, East Lansing, MI 48824
Initiation Date: 1962
10. LONG TERM TILLAGE AND ROTATION STUDY
W.A. Dick, D.M. Van Doren, J. Henry,
Ohio Agricultural Research and Development Center, 1680 Madison Ave.,
Wooster, OH 44691-4096
Location: Four experimental sites (Coshocton,
Initiation date: 1963
11. LONG-TERM CONTINUOUS NO-TILLAGE CORN EXPERIMENT IN
by Robert L. Blevins and Wilbur W. Frye, Professors of Agronomy,
University of Kentucky, Lexington, KY 40546 0091, USA
Tel. 606-257 x750 FAX 606-258-1952
Initiation Date: 1970
Stated Purpose: To investigate the effect of tillage systems and N rates on long-term com yields and soil properties
12. TILLAGE WHEAT - SOYBEAN EXPERIMENT IN
Hugo J. Marelli, Agricultural
Estación Experimental Agropecuaria, (2580) Marcos Juárez.
Tel. (0472) 25001-27169-27171
Fax (0472) 27169.
Location: Marcos Juarez, latitude
32° 42' South, longitude 62° 07' West; and 110m over sea level.
Initiation Date: 1974
Stated Purpose: To investigated the effect of conventional tillage and no-tillage systems on soybeans and wheat yield and soil quality.