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Institution
Collection
Format
Subject
12
Nitrogen fertilizers
8
Winter wheat Fertilizers
7
Fertilizers Application
5
Arid regions agriculture
5
Cropping systems
5
Dry farming
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5
Phosphatic fertilizers
4
Manure handling
3
Corn Fertilizers
3
Plants Effect of iron on
3
Sewage as fertilizer
3
Soil management
3
Soils Iron content
3
Soils Zinc content
3
Winter wheat Composition
3
Zinc Bioavailability
3
Zinc Solubility Physiological effect
3
Zinc deficiency diseases in plants
3
Zinc fertilizers Physiological effect
2
Fertilizers Costs
2
Grain
2
Grain Fertilizers
2
Organic fertilizers
2
Swine Manure
1
Sorghum (Genus) Fertilizers
1
Sugar beet
1
Sugar beet Fertilizers
1
Sulfur fertilizers
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Author
Westfall, Dwayne G.
23
Colorado State University. Cooperative Extension Service
9
Davis, J. G. 1962-
7
Colorado State University. Extension
6
Colorado Agricultural Experiment Station
6
Colorado State University. Department of Soil and Crop Sciences
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5
Barbarick, K. A.
5
Follett, Roy H.
5
Ludwick, Albert E.
4
Croissant, Robert L.
4
Goos, R. J.
4
Mortvedt, J. J.
4
Peterson, Gary, 1940-
4
Waskom, R. M.
3
Colorado State University. Department of Bioagricultural Sciences and Pest Management
3
United States. Great Plains Systems Research Unit
2
Bauder, Troy Allen
1
Amrani, Mohamed
1
Echols, James Wendell, 1931-
1
Gangloff, W. J.
1
Hansen, N. C.
1
Henson, M. Ann
1
Shanahan, John Francis, 1955-
1
Shaver, Tim
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