Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador
The quality and availability of forage, mainly from grasses, decreases in the tropical regions during the dry season, since when it matures it increases the content of structural carbohydrates and decreases the protein and the digestibility. The objective of this study was to evaluate the initial gr...
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Universidad Autónoma de Tamaulipas
2017
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López-Hidalgo, Hilda Beatriz Martínez-González, Juan Carlos Salcán-Guamán, Holger Cristobal Gusqui-Vilema, Luis Wilfrido Balseca-Guzmán, Diana Gabriela Cienfuegos-Rivas, Eugenia Guadalupe |
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López-Hidalgo, Hilda Beatriz Martínez-González, Juan Carlos Salcán-Guamán, Holger Cristobal Gusqui-Vilema, Luis Wilfrido Balseca-Guzmán, Diana Gabriela Cienfuegos-Rivas, Eugenia Guadalupe Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador |
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López-Hidalgo, Hilda Beatriz Martínez-González, Juan Carlos Salcán-Guamán, Holger Cristobal Gusqui-Vilema, Luis Wilfrido Balseca-Guzmán, Diana Gabriela Cienfuegos-Rivas, Eugenia Guadalupe |
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López-Hidalgo, Hilda Beatriz |
title |
Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador |
title_short |
Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador |
title_full |
Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador |
title_fullStr |
Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador |
title_full_unstemmed |
Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador |
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centrosema pubescens benth growth under nitrogen and sulfur fertilization more sulfur in ecuador |
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The quality and availability of forage, mainly from grasses, decreases in the tropical regions during the dry season, since when it matures it increases the content of structural carbohydrates and decreases the protein and the digestibility. The objective of this study was to evaluate the initial growth of Centrosema pubescens Benth, under nitrogen and sulfur fertilization. The planting of C. pubescens was carried out in black polyethylene bags. Two treatments of nitrogen fertilization 0 kg/Nha-1 (-NS) and 44 kg/Nha-1 (+NS) were evaluated using ammonium sulfate as the nitrogen source. Fertilization was done at the time of planting, at 15 d, 30 d and 60 d after sowing. The experiment lasted 12 weeks and weekly sampling of the following variables was done: number of nodules (NN), nodule weight (NW), root length (RL), partially dry matter (PDM), plant height (PH), leaf area index (LAI), net accumulation rate (NAR), crop growth rate (CGR), relative growth rate (RGC) and specific leaf area (SLA). A regression analysis was used to estimate growth curves and trend lines. The +NS treatment caused a significant decrease of NN (- 10) and NW (- 0.72 g) (P < 0.05). Nonsignificant result was observed in RL (P > 0.05) with 42.0 cm and 42.8 cm for +NS and -NS, respectively. However, for PDM and PH the treatments affected positivity their behavior (P < 0.05). The rest of the variables (LAI, NAR, CGR, RGR and SLA) were not affected by the treatments (P > 0.05). Fertilization with nitrogen plus sulfur improved the establishment of C. pubescens for fodder purposes. |
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Universidad Autónoma de Tamaulipas |
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2017 |
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https://revistaciencia.uat.edu.mx/index.php/CienciaUAT/article/view/826 |
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oai:ojs.pkp.sfu.ca:article-8262019-10-24T12:39:22Z Centrosema pubescens Benth growth under nitrogen and sulfur fertilization more sulfur in Ecuador Crecimiento de Centrosema pubescens Benth bajo fertilización nitrogenada más azufre en Ecuador López-Hidalgo, Hilda Beatriz Martínez-González, Juan Carlos Salcán-Guamán, Holger Cristobal Gusqui-Vilema, Luis Wilfrido Balseca-Guzmán, Diana Gabriela Cienfuegos-Rivas, Eugenia Guadalupe agronomic variables physiological variables legumes andosols. variables agronómicas variables fisiológicas leguminosas andosoles. The quality and availability of forage, mainly from grasses, decreases in the tropical regions during the dry season, since when it matures it increases the content of structural carbohydrates and decreases the protein and the digestibility. The objective of this study was to evaluate the initial growth of Centrosema pubescens Benth, under nitrogen and sulfur fertilization. The planting of C. pubescens was carried out in black polyethylene bags. Two treatments of nitrogen fertilization 0 kg/Nha-1 (-NS) and 44 kg/Nha-1 (+NS) were evaluated using ammonium sulfate as the nitrogen source. Fertilization was done at the time of planting, at 15 d, 30 d and 60 d after sowing. The experiment lasted 12 weeks and weekly sampling of the following variables was done: number of nodules (NN), nodule weight (NW), root length (RL), partially dry matter (PDM), plant height (PH), leaf area index (LAI), net accumulation rate (NAR), crop growth rate (CGR), relative growth rate (RGC) and specific leaf area (SLA). A regression analysis was used to estimate growth curves and trend lines. The +NS treatment caused a significant decrease of NN (- 10) and NW (- 0.72 g) (P < 0.05). Nonsignificant result was observed in RL (P > 0.05) with 42.0 cm and 42.8 cm for +NS and -NS, respectively. However, for PDM and PH the treatments affected positivity their behavior (P < 0.05). The rest of the variables (LAI, NAR, CGR, RGR and SLA) were not affected by the treatments (P > 0.05). Fertilization with nitrogen plus sulfur improved the establishment of C. pubescens for fodder purposes. La calidad y disponibilidad del forraje, principalmente de las gramíneas, disminuye en las regiones tropicales durante la época seca, ya que al madurar incrementa el contenido de carbohidratos estructurales y disminuye el de proteínas y la digestibilidad. El objetivo de este trabajo fue evaluar el crecimiento inicial de Centrosema pubescens Benth, bajo fertilización nitrogenada y azufrada. La siembra de C. pubescens se realizó en bolsas negras de polietileno. Se evaluaron dos tratamientos de fertilización nitrogenada 0 kg/Nha-1 (-NS) y 44 kg/Nha-1 (+NS), utilizando como fuente de nitrógeno sulfato de amonio. La fertilización se hizo al momento de la siembra, a los 15 d, 30 d y 60 d después de la siembra. El ensayo duró 12 semanas y se realizaron muestreos semanales de las siguientes variables: número de nódulos (NN), peso de nódulos (PN), longitud de raíz (LR), materia seca parcial (MSP), altura de planta (AP), índice de área foliar (IAF), tasa de acumulación neta (TAN), tasa de crecimiento del cultivo (TCC), tasa relativa de cre-cimiento (TRC) y área foliar específica (AFE). Se utilizó un análisis de regresión para estimar curvas de crecimiento y líneas de tendencia. El tratamiento +NS provocó la disminución significativa de NN (- 10) y PN (- 0.72 g) (P < 0.05). Resultados no significativos (P > 0.05) fueron observados en LR con 42.0 cm y 42.8 cm para +NS y –NS, respectivamente. Mientras que para MSP y AP, los tratamientos afectaron positivamente, el comportamiento (P < 0.05). El resto de las variables (IAF, TAN, TCC, TRC y AFE) no fueron afectadas por los tratamientos (P > 0.05). La fertilización con nitrógeno más azufre mejoró el establecimiento de C. pubescens con fines forrajeros. Universidad Autónoma de Tamaulipas 2017-07-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html application/xml https://revistaciencia.uat.edu.mx/index.php/CienciaUAT/article/view/826 10.29059/cienciauat.v12i1.826 CienciaUAT; Vol. 12 No. 1: July-December 2017; 84-95 CienciaUAT; Vol. 12 No. 1: Julio-Diciembre 2017; 84-95 2007-7858 2007-7521 spa https://revistaciencia.uat.edu.mx/index.php/CienciaUAT/article/view/826/411 https://revistaciencia.uat.edu.mx/index.php/CienciaUAT/article/view/826/488 https://revistaciencia.uat.edu.mx/index.php/CienciaUAT/article/view/826/631 Derechos de autor 2017 CienciaUAT |