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Defoliation Intensity Effects on Season-Long Dry Matter Distribution and Nutritive Value of Tall Fescue

USDA-ARS and Dep. Crop Science and Dep. Animal Science, Prof. Emeritus, Dep. Crop Science and Prof. Statistics, North Carolina State Univ., Raleigh, NC 27695

View larger version (48K): [in a new window]   Fig. 1. Daily growth rate changes of tall fescue by year throughout the growing season from eight defoliation intensities. The LSD (P 0.05) applies to all years.

View larger version (44K): [in a new window]   Fig. 2. Daily growth rate changes of tall fescue throughout the growing season among years within the 5-cm stubble defoliation series. The LSD (P 0.05) applies to all defoliation treatments.

View larger version (44K): [in a new window]   Fig. 3. Changes in in vitro dry matter disappearance (IVDMD) of tall fescue by year throughout the growing season from eight defoliation intensities. The LSD (P 0.05) applies to all years.

View larger version (40K): [in a new window]   Fig. 4. Changes in vitro dry matter disappearance (IVDMD) of tall fescue throughout the growing season among years within the 5-cm stubble defoliation series. The LSD (P 0.05) applies to all defoliation treatments.

View larger version (39K): [in a new window]   Fig. 5. Changes in crude protein of tall fescue by year throughout the growing season from four selected defoliation intensities. The LSD (P 0.05) applies to all years.

View larger version (42K): [in a new window]   Fig. 6. Changes in crude protein of tall fescue throughout the growing season among years within the three selected defoliation intensities. The LSD (P 0.05) applies to all defoliation treatments.

View larger version (41K): [in a new window]   Fig. 7. Changes in water soluble carbohydrates (WSC), neutral detergent fiber (NDF), and constituent acid detergent fiber (ADF), of tall fescue throughout the growing season (mean 3 yr) from multiple defoliation intensities (LSD; P 0.05).

View larger version (42K): [in a new window]   Fig. 8. Changes in hemicellulose, cellulose, and lignin of tall fescue throughout the growing season (mean 3 yr) from multiple defoliation intensities (LSD; P 0.05).