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Performance of Irrigated Tall Fescue–Legume Communities under Two Grazing Frequencies in the Southern Rocky Mountains, USA

^a Tucumcari Agric. Sci. Ctr., New Mexico State Univ., 6502 Quay Road AM.5, Tucumcari, NM 88401
^b Alcalde Sustainable Agric. Sci. Ctr., New Mexico State Univ., P.O. Box 159, Alcalde, NM 87511
^c Dep. of Agricultural and Extension Education, Agricultural Biometrics Service, New Mexico State Univ., P.O. Box 30003 MSC 3501, Las Cruces, NM 88003-8003

View larger version (18K): [in a new window]   Fig. 1. The effect over years of grazing frequency on legume DM yield in the sward of binary mixtures of tall fescue and selected pasture legumes harvested during May at Alcalde, NM. Data are the means of three reps. Bars indicate the LSD (P 0.05) for within year comparisons. Absence of an LSD on a date indicates no significant difference among treatments. Low and High grazing frequencies were grazed bimonthly (mid-May, mid-July, and mid-September) and monthly (mid-May to mid-September), respectively.

View larger version (30K): [in a new window]   Fig. 2. The effect over years of companion legume on combined (grass + legume) DM yield in the sward of binary mixtures of tall fescue and selected pasture legumes harvested during May at Alcalde, NM. Data are the means of three reps and two grazing frequencies [grazed bimonthly (mid-May, mid-July, and mid-September) or grazed monthly (mid-May to mid-September)]. Bars indicate the LSD (P 0.05) for within year comparisons. Absence of an LSD on a date indicates no significant difference among treatments. Asterisks in formulas indicate which components of the polynomial regression analysis across years for each pasture treatment were significantly different from zero (P < 0.05).