Utah State University Extension
Birdsfoot trefoil is a high-quality forage recommended for irrigated perennial pastures, either in mixtures with grasses or in pure stands. In this bulletin we report on the forage nutritive value of pure stands of birdsfoot trefoil harvested at 6- week intervals, and compare it to alfalfa harvested at the same intervals.
MacAdam, Jennifer W. and Griggs, Thomas C., "Irrigated Birdsfoot Trefoil Variety Trial: Forage Nutritive Value" (2013). All Current Publications. Paper 1336.