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Sward Structure of Simple and Complex Mixtures of Temperate Forages

^a USDA-ARS, Pasture Systems and Watershed Management Research Unit, Building 3702, Curtin Road, University Park, PA, 16802-3702
^b Dep. of Dairy and Animal Science, The Pennsylvania State Univ., University Park, PA, 16802
^c Univ. of Kiel, Germany

View larger version (29K): [in a new window]   Fig. 1. Pre- and postgrazing vertical distribution of herbage bulk density in two pasture mixtures during 2002 and 2003 at University Park, PA. The 0- to 5-cm layer is the base of the sward. Data are least squares means of four sampling periods. Error bars indicate one standard error.

View larger version (28K): [in a new window]   Fig. 2. Pre- and postgrazing vertical distribution of grass and legume bulk density in two pasture mixtures during 2002 at University Park, PA. The 0- to 5-cm layer is the base of the sward. Data are least squares means of four sampling periods. Error bars indicate one standard error.

View larger version (28K): [in a new window]   Fig. 3. Pre- and postgrazing vertical distribution of grass and legume bulk density in two pasture mixtures during 2003 at University Park, PA. The 0- to 5-cm layer is the base of the sward. Data are least squares means of four sampling periods. Error bars indicate one standard error.

View larger version (27K): [in a new window]   Fig. 4. Pre- and postgrazing vertical distribution of chicory bulk density in two pasture mixtures during 2002 and 2003 at University Park, PA. The 0- to 5-cm layer is the base of the sward. Data are least squares means of four sampling periods. Error bars indicate one standard error.