Agronomic performance and morphogenic and structural characteristics of Axonopus aureus pastures under phosphate fertilization levels in the Roraima’s savannas ; Comportamiento agronómico y características morfogenéticas y estructurales de pastos de Axonopus aureus bajo niveles de fertilización fosfatada en las sabanas de Roraima ; Desempenho agronômico e características morfogênicas e estruturais de pastagens de Axonopus aureus sob níveis de fertilização fosfatada nos cerrados de Roraima
The effect of phosphate fertilization (0, 30, 60 and 120 kg of P2O5 ha-1) on forage production and morphogenetic and structural characteristics of Axonopus aureus was evaluated under natural field conditions in the savannas of Roraima. Phosphate fertilization positively and significantly (P<0.05) affected green dry matter (GDM) production, absolute growth rate (AGR), number of tillers plant-1, number of leaves tiller-1 (NLT), average leaf size (ALS), leaf tiller area (LTA), appearance rates (LAR), expansion (LER) and leaf senescence rates. The maximum yields of GDM, AGR, LAR, LER, NLT, LTA... Mehr ...
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| Dokumenttyp: | Artikel |
| Erscheinungsdatum: | 2023 |
| Verlag/Hrsg.: |
Research
Society and Development |
| Schlagwörter: | Hojas / Macollaje / Matéria seca verde / Senescencia / Leaves / Green dry matter / Tillering / Senescence / Folhas / Perfilhamento / Senescência |
| Sprache: | Englisch |
| Permalink: | https://search.fid-benelux.de/Record/base-27252911 |
| Datenquelle: | BASE; Originalkatalog |
| Powered By: | BASE |
| Link(s) : | https://rsdjournal.org/index.php/rsd/article/view/40673 |
The effect of phosphate fertilization (0, 30, 60 and 120 kg of P2O5 ha-1) on forage production and morphogenetic and structural characteristics of Axonopus aureus was evaluated under natural field conditions in the savannas of Roraima. Phosphate fertilization positively and significantly (P<0.05) affected green dry matter (GDM) production, absolute growth rate (AGR), number of tillers plant-1, number of leaves tiller-1 (NLT), average leaf size (ALS), leaf tiller area (LTA), appearance rates (LAR), expansion (LER) and leaf senescence rates. The maximum yields of GDM, AGR, LAR, LER, NLT, LTA and ALS were obtained with the application of 110.4; 108.5; 54.1; 83.5; 96.6; 59.8 and 90.6 kg of P2O5 ha-1, respectively. The efficiency of P utilization was inversely proportional to the P doses applied. ; Se evaluó el efecto de la fertilización fosfatada (0, 30, 60 y 120 kg de P2O5 ha-1) sobre la producción de forraje y las características morfogenéticas y estructurales de Axonopus aureus en condiciones de campo natural en las sabanas de Roraima. La fertilización con fosfato afectó positiva y significativamente (P<0,05) la producción de materia seca verde (MSV), la tasa de crecimiento absoluto, el número de macollas planta-1 (NMP), el número de hojas macollas-1 (NHM), el tamaño medio de la hoja (TMH), el área foliar macollas-1 (AFM), tasas de aparición (TAF), expansión (TEF) y senescencia foliar. Los rendimientos máximos de MSV, TAC, TAF, TEF, NHM, AFM y TMH se obtuvieron con la aplicación de 110,4; 108,5; 54,1; 83,5; 96,6; 59,8 y 90,6 kg de P2O5 ha-1, respectivamente. La eficiencia de utilización de P fue inversamente proporcional a las dosis de P aplicadas. ; O efeito da fertilização fosfatada (0, 30, 60 e 120 kg de P2O5 ha-1) sobre a produção de forragem e características morfogênicas e estruturais de Axonopus aureus foi avaliado em condições naturais de campo nos cerrados de Roraima. A adubação fosfatada afetou positiva e significativamente (P<0,05) a produção de matéria seca verde (MSV), taxa absoluta de ...