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Bibliographic Details
Main Author:	José Wilfredo Castaneda Chávez
Format:	Artículo científico
Language:	es
Published:	Universidad de Costa Rica 2006
Subjects:	Agrociencias Sorgo nitrógeno rendimiento de grano rendimiento de rastrojo eficiencia del uso de nitrógeno
Online Access:	https://www.redalyc.org/articulo.oa?id=43717103
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Eficiencia del uso de nitrógeno en sorgo sensible al fotoperíodo en asocio con maíz en El Salvador José Wilfredo Castaneda Chávez Stephen C. Mason Quirino Argueta Portillo Rolando Ventura Elías Máximo Hernández Valle René Clará Valencia Agrociencias Sorgo nitrógeno rendimiento de grano rendimiento de rastrojo eficiencia del uso de nitrógeno En ElSalvador se llevó a cabo un estudio durante los años 2001 y2002 en Izalco y Santa Cruz Porrillo, con las variedades desorgo: 86-EO-226, 85-SCP-805, ES-790, Santa Cruz, Limayy Yalaguina bajo 0, 47, 95 y 142 kg de N/ha. El rendimientodel grano y del rastrojo, la concentración y la extracción denitrógeno (N), y el uso eficiente del N en el grano y en labiomasa (UEN) fueron determinados. Las variedades 85-SCP-805, ES-790 y 86-EO-226 produjeron de 1,8 a 2,9 t/hamás grano que las variedades Santa Cruz y Yalaguina, conpoca diferencia en el rendimiento del rastrojo. La aplicaciónde N aumentó el rendimiento cuadráticamente, se obtuvo másdel 67% del aumento cuando la aplicación de N fue de 47 kgde N/ha. El UEN del grano disminuyó con el aumento de N,pero en general las variedades 85-SCP-805, ES-790 y 86-E0-226 dieron un UEN del grano mayor a 50 kg de materia secadel grano/kg de N extraído, mientras que Santa Cruz yYalaguina mostraron UEN entre 20 y 30 kg de materia secadel grano/kg N extraido. Estos resultados indicaron quepueden aumentar el rendimiento del grano y del rastrojo, y elUEN del grano, en las variedades sensibles al fotoperíodo 2006 artículo científico 2215-3608 https://www.redalyc.org/articulo.oa?id=43717103 es http://www.redalyc.org/revista.oa?id=437 Agronomía Mesoamericana application/pdf Universidad de Costa Rica Agronomía Mesoamericana (Costa Rica) Num.1 Vol.17

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