Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 3, 1999
Publication Date: N/A
Technical Abstract: Aong perennial forage crops typically grown in the southeastern USA, bermudagrass (Cynodon dactylon (L.) Pers.) has the greatest potential to remove nutrients from soils routinely receiving animal manure due to its marked yield response to nitrogen. Our objective was to determine yield an nutrient uptake differences among diverse bermudagrasses fertilized with swine effluent. Six hybrid cultivars (`Alicia', `Brazos', `Coastal', `Russell', `Tifton 44', `Tifton 85') and common bermudagrass were establish on a Brooksville silty clay (fine, montmorillonitic, thermic Aquic Chromudert) and were irrigated from May to October with 98 mm swine effluen ha-1 to provide 403 kg N and 75 kg P ha-1. Annual uptake of N and P by common bermudagrass (406 kg N and 51 kg P ha-1, respectively) was similar t or greater than that of all the hybrids despite the fact that common bermudagrass yielded 12% less dry matter (DM) than Coastal bermudagrass (26 6Mg DM ha-1), the most productive hybrid. The consistency of these results will be determined for additional growing seasons.