Growth curve in elephant grass genotypes based on morpho-agronomic traits for energy production.

The elephant grass (Cenchrus purpureus (Schumach.) Morrone) is one of the species with great prominence for energy production because of its favorable traits, such as high yield and short cycle, combined with several biomass quality characteristics. Therefore, this study intended to evaluate the morpho-agronomic traits of eight elephant grass genotypes under different cutting ages. A randomized block design with three replicates was applied to the experiment, and plots were composed of a 12 m long line divided into six subplots for each of the bimonthly cuts. Eight genotypes were evaluated in the plots, and the cutting ages (2, 4, 6, 8, 10, and 12-mo) were analyzed in the subplots. The following traits were assessed: DM yield, (DMY) percentage of DM, and average plant height (HEI). All genetic-statistical analyses were conducted using the Genes Program. The evaluated genotypes showed nonsignificant differences, indicating that, for the evaluated traits, these genotypes are genetically similar. Most genotypes presented linear effect of 2nd degree in the two assessment cuts, pointing they did not reach their maximum capacity of DMY in the time interval of the evaluated cuts. The maximum %DM achieved for the most genotypes occurred at about 9-mo age, while genotypes Vruckwona and BAG-86 at about 10-mo age. The maximum points for HEI trait were between 8 and 10-mo age. Increasing the cutting interval leads to increases in DM yield, with the 10-mo cutting age being the most efficient, resulting in higher yields.

Bibliographic Details

Main Authors:	VIDAL, A.-K. F., DAHER, R. F., FREITAS, R. S., STIDA, W. S., LEDO, F. J. da S., SILVA, V. B. da, ENTRINGER, G. C., TARDIN, F. D., GRAVINA, G. de A., VIVAS, M., SOUZA, A. G. de, AMBRÓSIO, M., SANTANA, J.-G. da S., FARIASA, J. E. C.
Other Authors:	ANA-KESIA F. VIDAL, Universidade Estadual do Norte Fluminense Darcy Ribeiro; ROGÉRIO F. DAHER, Universidade Estadual do Norte Fluminense Darcy Ribeiro; RAFAEL S. FREITAS, Universidade Estadual do Norte Fluminense Darcy Ribeiro; WANESSA F. STIDA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; FRANCISCO JOSE DA SILVA LEDO, CNPGL; VERÔNICA B. DA SILVA, Universidade Federal do Piauí; GEOVANA C. ENTRINGER, Universidade Estadual do Norte Fluminense Darcy Ribeiro; FLAVIO DESSAUNE TARDIN, CNPMS; GERALDO DE A. GRAVINA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; MARCELO VIVAS, Universidade Estadual do Norte Fluminense Darcy Ribeiro; ALEXANDRE G. DE SOUZA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; MOISÉS AMBRÓSIO, Universidade Estadual do Norte Fluminense Darcy Ribeiro; JOSEFA-GRASIELA DA S. SANTANA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; JOÃO E. C. FARIAS, Universidade Estadual do Norte Fluminense Darcy Ribeiro.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2022-02-01
Subjects:	Cenchrus purpureus, Idade de corte, Bioenergia, Matéria Seca, Produção, Capim Elefante, Curva de Crescimento,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139535 https://doi.org/10.4067/S0718-58392022000100078
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