Summary; Materials and methods; Site; Pasture management; Forage sampling; Sample preparation; Chemical analysis; Results and discussion; Nutritive quality; Pastures; Dry matter content; Leaf and stem fractions; Acid detergent lignin; Acid detergent fiber; Ash; Crude protein; Toxic components; Nitrate; Oxalate; Total alkaloid; Management implications; Literature cited; AppendixBulletin containing the results of a study to determine the influence of various pasture management practices on the levels of nutritive and toxic ompounds found in kochia herbage in northeastern New Mexico