Título:	Tillering dynamics and morphogenesis in BRS Zuri Guinea grass pastures: responses to grazing management.
Autoria:	RODRIGUES, J. G. DIFANTE, G. dos S. MONTAGNER, D. B. PEREIRA, M. de G. EUCLIDES, V. P. B. ARAUJO, A. R. de MONTEIRO, G. O. de A. SANTANA, J. C. S. ÍTAVO, L. C. V. SBRÍSSIA, A. F.
Afiliação:	JÉSSICA GOMES RODRIGUES, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; GELSON DOS SANTOS DIFANTE, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; DENISE BAPTAGLIN MONTAGNER, CNPGC; MARISLAYNE DE GUSMÃO PEREIRA, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; VALERIA PACHECO BATISTA EUCLIDES, CNPGC; ALEXANDRE ROMEIRO DE ARAUJO, CNPGC; GABRIELA OLIVEIRA DE AQUINO MONTEIRO, UNIVERSIDADE ESTADUAL PAULISTA JÚLIO DE MESQUITA FILHO; JULIANA CAROLINE SANTOS SANTANA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE; LUIS CARLOS VINHAS ÍTAVO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; ANDRÉ FISCHER SBRÍSSIA, UNIVERSIDADE ESTADUAL DE SANTA CATARINA.
Ano de publicação:	2026
Referência:	The Journal of Agricultural Science, v. 164, e20, p. 1-8, 2026.
Conteúdo:	ABSTRACT - Studies on morphogenesis and tillering are crucial for pasture productivity and sustainability, as forage production depends on tiller performance and population density. This two-year study assessed the impact of four grazing frequencies on tillering dynamics and morphogenesis traits of Megathyrsus maximus cv. BRS Zuri under intermittent stocking. A randomized block design was employed, with four pre-grazing light interception (LI) levels (80%, 85%, 90%, and 95%) and four replications per treatment. Evaluated variables included leaf appearance (LAR), elongation (LER) and senescence rates (LSR), leaf lifespan (LLS), phyllochron (PHYL), final leaf length (FLL), live leaf number (LLN), stem elongation rate (SER), tiller appearance (TAR), mortality (TMR) and survival rates, tiller stability index (TSI), and forage accumulation rate (FAR). There was an effect of LI on PHYL, LER, SER, LLS, and LSR, where data fit increasing linear regressions, with increments of 0.29 days, 2.86 cm, 0.013 cm, 1.52 days, and 0.058 cm, respectively, as LI increased. Tiller appearance was similar across treatments, whereas mortality and survival rates showed LI × year interaction. The highest mortality rate was observed in pastures managed with 80% LI, while the lowest mortality and highest survival rates occurred in those managed with 95% LI. TSI increased with LI and was higher in the first year, with reductions under 80% and 85% LI. Pastures managed at 90% and 95% LI showed more stable tiller populations and greater leaf elongation and FLL. Management with 90% LI allows for growth interruption before the greatest pseudostem accumulation and leaf senescence.
Thesagro:	Forragem Morfogênese Pastagem Panicum Maximum
NAL Thesaurus:	Defoliation Forage production Grazing management Morphogenesis Megathyrsus maximus Tillering Tropical grasslands
ISSN:	1469-5146
Digital Object Identifier:	https://doi.org/10.1017/S0021859626100586.
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPGC)