03238naa a2200433 a 450000100080000000500110000800800410001902400590006010000290011924501610014826000090030952018990031865000120221765000100222965000120223965000180225165000250226965000230229465000190231765000120233665000290234865000170237765000210239465300250241565300270244065300170246765300200248465300160250465300220252065300250254265300210256770000250258870000230261370000170263670000230265370000260267670000230270277300790272519564412015-04-15 2013 bl uuuu u00u1 u #d7 ahttp://dx.doi.org/10.1590/S1516-359820130002000012DOI1 aCUTRIM JÚNIOR, J. A. A. aBiomass flow in Tifton-85 bermudagrass canopy subjected to different management strategies under rotational grazing with dairy goats.h[electronic resource] c2013 aBiomass flow characteristics and forage accumulation were evaluated in Bermudagrass (Tifton 85) pasture managed under intermittent stocking with different management strategies. The management levels utilized were conventional (10 cm residual height and unfertilized), light (20 cm residual height and unfertilized), moderate (20 cm residual height with fertilization of 300 kg N/ha.year) and intensive (10 cm residual height with fertilization of 600 kg N/ha.year). A randomized design was used with repeated measurements over time, in two periods of the year, with four replicates. There was significant effect of management × period of the year on the leaf elongation rate (LER). The management levels under fertilization (0.59 and 0.60 cm/tiller.day for the intensive and moderate management, respectively) and the rainy season (0.49 cm/tiller.day) showed the greatest stem elongation rate. Leaf senescence rate (LSR) before and after and total LSR were modified by the management × period of the year interaction. The intensive management, with 0.38 leaves/tiller.day, as well as the dry period, with 0.27 leaves/tiller.day, showed higher leaf appearance rate. The lowest phyllochron was observed in intensive management and dry periods, as well as an interaction with the management of the same periods of the year. There was management × period of year interaction effect on leaf lifespan; the highest value was found under conventional management and dry period. Both production and forage accumulation rates were higher in the intensive and moderate management levels and dry season, and there was interaction of the intensive management system with the seasons. Managing pastures under moderate and intensive rotational stocking, which occurred mainly in the rainy and dry seasons, respectively, maximizes the flow of tissues and consequently production and accumulation of forage. abiomass aGoats aGrazing aMorphogenesis anitrogen fertilizers aRotational grazing aCabra leiteira aCaprino aFertilizante nitrogenado aMorfogênese aPastejo rotativo aAcúmulo de forragem aAdubação nitrogenada aCapim massai aCapim-tifton 85 aCynodon spp aFluxo de biomassa aGrassland Management aPanicum infestum1 aCAVALCANTE, A. C. R.1 aCÂNDIDO, M. J. D.1 aSILVA, G. L.1 aOLIVEIRA, L. E. V.1 aVASCONCELOS, E. C. G.1 aMESQUITA, T. M. O. tRevista Brasileira de Zootecnia, Viçosa, MGgv. 42, n. 2, p. 77-86, 2013.