Evaluation of Natural Regrowth of Axonopus aureus under rest periods in Roraima´s Savannas ; Evaluación del rebrote natural de Axonopus aureus bajo períodos de descanso en las sabanas de Roraima ; Avaliação da rebrota natural de Axonopus aureus sob períodos de descanso nos cerrados de Roraima

The natural regrowth of Axonopus aureus in native pasture of Roraima´s savannas was evaluate, during early rainy period. The experimental design was a completely randomized, with four replications. The treatments consisted of four pasture rest periods (14, 28, 42 and 56 days after beginning of the rainy period). Evaluations were carry out during the period of June to August of 2016. The parameters measured were dry matter (DM) yields and grass morphogenetic and structural characteristics. The green and total DM, number of tillers plant-1, number of axillary tillers plant-1, number of live till... Mehr ...

Verfasser: Costa, Newton de Lucena
Rodrigues, Antônio Neri Azevedo
Dokumenttyp: Artikel
Erscheinungsdatum: 2021
Verlag/Hrsg.: Research
Society and Development
Schlagwörter: Dry matter / Leaves / Morphogenesis / Matéria seca / Folhas / Morfogênese / Materia seca / Hojas / Morfogénesis
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-27644533
Datenquelle: BASE; Originalkatalog
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Link(s) : https://rsdjournal.org/index.php/rsd/article/view/18536

The natural regrowth of Axonopus aureus in native pasture of Roraima´s savannas was evaluate, during early rainy period. The experimental design was a completely randomized, with four replications. The treatments consisted of four pasture rest periods (14, 28, 42 and 56 days after beginning of the rainy period). Evaluations were carry out during the period of June to August of 2016. The parameters measured were dry matter (DM) yields and grass morphogenetic and structural characteristics. The green and total DM, number of tillers plant-1, number of axillary tillers plant-1, number of live tillers plant-1, number of live leaves tiller-1 and leaf area index were directly proportional to rest periods. The leaf appearance and elongation rate were negatively affect by rest periods, while the dead DM was not affect by rest periods. Considering the low green DM availability of A. aureus, its recommends the utilization of some management practice, preferentially grazing or mowing, to remove the dead DM with low nutrition value and permit a grass vigorous regrowth in the beginning of the rainy period. ; Se evaluó el rebrote natural de Axonopus aureus en pastizales nativos en las sabanas de Roraima, al comienzo de la temporada de lluvias. Los tratamientos consistieron en períodos de descanso (14, 28, 42 y 56 días después del comienzo de la temporada de lluvias). El diseño experimental fue completamente al azar con cuatro repeticiones. Las evaluaciones se realizaron de junio a agosto de 2016. Los parámetros medidos fueron el rendimiento de forraje y las características morfogénicas y estructurales de la gramínea. Los rendimientos de materia seca verde y total, número total de macollas planta-1, número de macollas axilares, número de macollas vivas e índice de área foliar fueron directamente proporcionales a los períodos de descanso, ocurriendo lo opuesto en cuanto a las tasas de aparición y expansión de las hojas, mientras que los rendimientos de materia seca muerta no se vieron afectados. Considerando la baja ...