Tropical Grasslands (1996) Volume 30, 367373
Effects of height and frequency of cutting on yield, quality and persistence of Desmanthus virgatus
W. TRUJILLO,1,2 W.D. PITMAN,1,4 C.G. CHAMBLISS3 and K. WILLIAMS2
1University of Florida, Agricultural Research Center, Ona, and
Desmanthus virgatus has demonstrated potential as a pasture legume, particularly on tropical and subtropical clay soils that are neutral to alkaline. To increase understanding of its responses to defoliation, a factorial combination of 5, 25 and 100-cm stubble heights and 2, 4 and 12-week harvest intervals was imposed on field plots of D. virgatus accession IRFL 1857 over 2 years. Leaf and stem yield, in vitro digestibility, crude protein and number of growing points following defoliation were determined. Total non-structural carbohydrate (TNC) concentrations in roots and stems were also measured following each of 2 growing seasons of defoliation.