J. Hafley

Influence of nitrogen fertilization and defoliation frequency on nitrogen constituents and feeding value of annual ryegrass.

Y. Zhang, L. Bunting, L. Kappel, 1995, Journal of animal science.

Effect of Growth Stage and Fertilization on Crude Protein and In Vitro Protein Degradation of Cool-Season Annual Forages

R. W. Adkinson, W. M. Craig, J. Hafley, 1987 .

In Vitro Protein Degradation of Cool Season Forages Planted with Minimum Tillage and No Fertilization

R. W. Adkinson, W. M. Craig, J. Hafley, 1987 .

Supplementation of growing cattle grazing warm-season grass with proteins of various ruminal degradabilities.

T. Klopfenstein, J. Hafley, B. Anderson, 1993, Journal of animal science.

Comparison of Marshall and Surrey ryegrass for continuous and rotational grazing.

J. Hafley, 1996, Journal of animal science.