Adaptive responses of Paspalum oteroi native grass to fertilization and shading.

Abstract: The aim of this study was to evaluate the Paspalum oteroinative grass and its adaptive responses to shadingand foliarfertilization in two pasture systems in the Cerrado-Pantanal transition region. A completely randomized block design with factorial arrangement was adopted to this study: three types of fertilizers [no fertilization ?control (C); Foliar fertilizer for pasture (FF) and Soil fertilizer + Foliar fertilizer (SF)]xtwo pasture systems (WS -with shading, wooded P. oteroipasture; NS -no shading, exclusive P. oteroipasture)with four repetitions. P. oteroiseedlings were transplanted in November 2015. Data collection was from May 2016 to September 2016, during dry season. There were differences (p<0.05) in the sward height variables (H), dry matter (DM), crude protein (CP) content, dry matter production (DMP) and shoot: root ratio (S:R).In the WS system increasedof 8,61% of the CP content and fertilizer SF increasedof 8.81% of the CP content. However, in the WS system was observed reduced DM, DMP and S:R and in the FF and SF fertilizers increased leaf area index (LAI), inthe latter months of the application. Probably, P. oteroigrass developed adaptation strategies to deal with the environmental conditions to which it was submitted during this study, such as variations in its morphophysiological traits: low shoot / root ratio, height, chemical composition, leaf area index e light interception. In conclusion, P. oteroishowed adaptation to wooded pasture systems, during dry period, however, the use of fertilization depends on economic viability studies.

Bibliographic Details

Main Authors:	FLEITAS, A. C. F., PAIVA, L. M., SANTOS, S. A., FERNANDES, H. J., BREVILIERI, R. G., SANTOS, P. G. dos
Other Authors:	ALEX COENE FLEITAS, State University of Mato Grosso do Sul; LUÍSA MELVILLE PAIVA, State University of Mato Grosso do Sul; SANDRA APARECIDA SANTOS, CPAP; HENRIQUE JORGE FERNANDES, State University of Mato Grosso do Sul; REDNEY GOMES BREVILIERI, State University of Mato Grosso do Sul; PATRICIA GOMES DOS SANTOS, State University of Mato Grosso do Sul.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2021-02-25
Subjects:	Gramínea Forrageira, Qualidade, Forage quality,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130297 http://dx.doi.org/10.5296/jas.v8i3.17227
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