Publication Date

1989

Description

Tall fescue (Festuca arundinacea Schreb.) populations were selected for slow and rapid leaf area expansion rate (Nelson and Sleper, 1983). Daily leaf elongation rate (LER) in the field was increased by 0.30 mm and decreased by 0.53 mm per gener­ation (Nelson et al., 1985), but single-leaf photosynthesis was not affected. Populations selected for high LER had longer and wider leaf blades (Nelson and Sleper, 1983), and lower tiller density, higher weight per tiller, and higher forage yield in veg­etative swards (Nelson et al., 1985) than those selected for slow LER. Zarrough et al. (1983) suggested that tall fescue could be • selected for compatibility with legumes. Similarly, Hoveland et al. (1987) found birdsfoot trefoil (Lotus corniculatus L.) culti­vars differed in their compatibility with tall fescue and orch­ardgrass (Dactylis glomerata L.). Our objective was to evaluate compatibility of birdsfoot trefoil with populations of tall fescue having divergent morphology. We also evaluated in vitro dry matter digestibility (IVDMD).

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Compatibility of Birdsfoot Trefoil with Tall Fescue Selected for High and Low Leaf Area Expansion Rate

Tall fescue (Festuca arundinacea Schreb.) populations were selected for slow and rapid leaf area expansion rate (Nelson and Sleper, 1983). Daily leaf elongation rate (LER) in the field was increased by 0.30 mm and decreased by 0.53 mm per gener­ation (Nelson et al., 1985), but single-leaf photosynthesis was not affected. Populations selected for high LER had longer and wider leaf blades (Nelson and Sleper, 1983), and lower tiller density, higher weight per tiller, and higher forage yield in veg­etative swards (Nelson et al., 1985) than those selected for slow LER. Zarrough et al. (1983) suggested that tall fescue could be • selected for compatibility with legumes. Similarly, Hoveland et al. (1987) found birdsfoot trefoil (Lotus corniculatus L.) culti­vars differed in their compatibility with tall fescue and orch­ardgrass (Dactylis glomerata L.). Our objective was to evaluate compatibility of birdsfoot trefoil with populations of tall fescue having divergent morphology. We also evaluated in vitro dry matter digestibility (IVDMD).