By Mary A. Sego
Extent: 1.0 Folders. More info below.
Forms of Material: Articles
Access Restrictions: Collection is open for research.
Preferred Citation: MSF 325, James L. Roberts papers, Archives and Special Collections, Purdue University Libraries
Interrelationships of Legumes and Grasses Grown in Association, Roberts, James L.; Olson, Frank R. Reprinted from Journal of the American Society of Agronomy, vol. 34, no. 8, August, 1942, pp. 695-701.
The Influence of Fertilizers and Season on Nonsymbiotic Nitrogen Fixation in Brookston and Bedford Silt Loams, Roberts, James L.; Olson, Frank R. Reprinted from Journal of the American Society of Agronomy, vol. 34, no. 7, July 1942, pp. 624-627.
The Relative Efficiency of Strains of Rhizobium Trifolii as Influenced by Soil Fertility, Roberts, James L.; Olson, Frank R. Reprinted from Science, vol. 95, no. 2468, April 17, 1942, pp. 413-414.
Influence of Potassium Chloride on Nitrification in Bedford Silt Loam, Hahn, Barton E.; Olson, Frank R.; Roberts, James L. Reprinted from Soil Science, vol. 54, no. 2, August, 1942, pp. 113-121.