Influence of harvest management on yield and persistence of rhizoma peanut on wet tropical soils.
(C03-mislevy243766-poster)
Authors:
P. Mislevy* - Agronomy Department, Range Cattle REC, Ona, FL, Un
K.H. Quesenberry - Agronomy Department, Gainesville, FL, Univ. of Florida M.J. Williams - Subtropical Agric. Res. Stn., Brooksville, FL, Univ. of Florida A.R. Blount - North Florida REC, Marianna, FL, Univ. of Florida
Abstract:
?There is a major need to select and develop persistent, long-lived legumes for poorly drained tropical and subtropical soils. Rhizoma peanut (Arachis glabrata Benth) is a long-lived, warm-season perennial legume adapted to droughty soils. A 3-yr experiment was conducted to determine the influence of rhizoma peanut entries and stubble height (SH) on forage dry biomass, nutritive value, and persistence (% stand) in a poorly drained soil. The study was a split-plot with SH (2.5 and 10 cm) as main plots and rhizoma peanut entries (Ecoturf, PI 262826, PI 262833, PI 262839, Florigraze, Arbrook, and Arbrook Select) as subplots, with four replicates. Across years, dry biomass yield for the 2.5 cm stubble (11.6 Mg ha-1) was ?significantly higher than for the 10 cm stubble (7.7 Mg ha-1). Generally no difference was found in crude protein (180 g kg-1) and in vitro organic matter digestion (693 g kg-1) between SH, when pooled over years. Most entries harvested at the 10 cm SH tolerated periodic flooding with no visible stress conditions. However, entries harvested at the 2.5 cm stubble and exposed to periodic flooding died during the second harvest year. Arbrook and Arbrook Select decreased 67% in dry biomass between yr 1 and yr 3, indicating lack of wet soil tolerance. Data support the use of a 10 cm SH for rhizoma peanut when periodic flooded conditions occur.
Speaker Information: Paul Mislevy, Agronomy Department, Range Cattle REC, Ona, FL, Un, 3401 Experiment Station, Ona, FL 33865; Phone: 863-735-1314; E-mail: [email protected]
Session Information: Tuesday, November 4, 2003, 4:00 PM-6:00 PM Presentation Start: 4:00 PM (Poster Board Number: 430)