Pruning the roots of corn: deep vs. shallow cultivation. Improving corn: cross fertilization and selection. Peas, beans, flax, and other crops. Results of seeding rusted, frosted and frozen wheat of 1888. Further observations - (:unkn) unknown (University of Minnesota. Agricultural Experiment Station, 1890)
This archival publication may not reflect current scientific knowledge or recommendations. Current information available from University of Minnesota Agricultural Experiment Station: http://www.maes.umn.edu/