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Canopy Characteristics of Continuously Stocked Limpograss Swards Grazed to Different Heights

Agronomy Department, P.O. Box 110300, Univ. of Florida, Gainesville, FL 32611-0300

View larger version (22K): [in a new window]   Fig. 1. Diagram illustrating the top 5 cm (T-5 cm), upper (UL), and lower (LL) layers of grazed limpograss canopies. In each treatment UL = the upper 25% and LL = the lower 50% of the sward.

View larger version (61K): [in a new window]   Fig. 2. Total, leaf, and stem bulk density (BD) for different canopy heights and layers (top 5-cm layer, T-5 cm; upper layer, UL; lower layer, LL) of limpograss during 1998 and 1999. In each treatment UL = the upper 25% and LL = the lower 50% of the sward. Orthogonal polynomial contrasts are indicated for the effect of canopy height; L = linear, Q = quadratic, NS = not significant, P 0.1, * P 0.05.

View larger version (21K): [in a new window]   Fig. 3. Leaf and stem percentage for different layers (top 5-cm layer, T-5 cm; upper layer, UL; lower layer, LL) of limpograss during 1998 and 1999. In each treatment UL = the upper 25% and LL = the lower 50% of the sward. Means are not different if followed by the same letter (P > 0.1).

View larger version (28K): [in a new window]   Fig. 4. Leaf CP and IVOMD for different canopy heights (20, 40, and 60 cm) and layers (top 5-cm layer, T-5 cm; upper layer, UL; lower layer, LL) of limpograss across years. Means are not different if followed by the same letter (P > 0.1). Orthogonal polynomial contrasts are indicated for the effect of canopy height; L = linear, Q = quadratic, P 0.1, * P 0.05, ** P 0.01.