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An experiment was carried out to determine the effect of cutting interval and nitrogen fertilization on dry matter yields and chemical composition of Panama-Elephant grass (Pennisetum purpureum PI 300-086), locally known in Panama as “King Grass”. Dry matter yields were affected by cutting intervals and dose of nitrogen fertilizer (P<.01). These variables did not affect (P>.01) crude protein phosphorous, potassium and magnesium contents. Based on the maximum value of the marginal product, the following optimun fertilization rates at the different cutting intervals were recommended: 100 Kg N/Ha at 45 days, 200 Kg N/Ha at 60 days, and 50 Kg N/Ha at 75 days; however, higher fertilizer doses were still profitable.
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| Format: | Digital revista |
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Instituto de Innovación Agropecuaria de Panamá
1978
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| Online Access: | http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/575 |
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oai:ojs.revistacienciaagropecuaria.ac.pa:article-5752024-07-17T16:12:19Z HAS NO TITLE. EVALUACIÓN DEL PASTO ELEFANTE-PANAMÁ (Pennisetum purpureum PI 300-086) BAJO DIFERENTES INTERVALOS DE CORTE Y DOSIS DE FERTILIZACIÓN NITROGENADA. Pinzón, B. R. González, J. An experiment was carried out to determine the effect of cutting interval and nitrogen fertilization on dry matter yields and chemical composition of Panama-Elephant grass (Pennisetum purpureum PI 300-086), locally known in Panama as “King Grass”. Dry matter yields were affected by cutting intervals and dose of nitrogen fertilizer (P<.01). These variables did not affect (P>.01) crude protein phosphorous, potassium and magnesium contents. Based on the maximum value of the marginal product, the following optimun fertilization rates at the different cutting intervals were recommended: 100 Kg N/Ha at 45 days, 200 Kg N/Ha at 60 days, and 50 Kg N/Ha at 75 days; however, higher fertilizer doses were still profitable. Se estudió el efecto entre los intervalos de corte cada 45, 60 y 75 días y las aplicaciones de nitrógeno (0, 50, 100 y 200 Kg/Ha), sobre el rendimiento de materia seca y la composición química del pasto Elefante-Panamá (Pennisetum purpureum PI 300-086), conocido localmente en Panamá como “King Grass”. Se encontraron diferencias significativas (P<.01) entre intervalos de corte y dosis de nitrógeno en la producción de materia seca. Tanto los intervalos entre cortes, como las dosis de nitrógeno aplicadas al pasto Elefante-Panamá no afectaron significativamente (P>.01) los contenidos de proteína cruda, fósforo, potasio y magnesio en el forraje. Se efectuó un análisis económico de tipo insumo-producto, el que permitió recomendar las siguientes dosis óptimas de fertilización a diferentes intervalos entre corte: 100 Kg de N/Ha a los 45 días, 200 Kg N/Ha a los 60 días y 50 Kg N/Ha a los 75 días; sin embargo, dosis mayores son justificables económicamente. Instituto de Innovación Agropecuaria de Panamá 1978-10-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/575 Ciencia Agropecuaria; Núm. 1 (1978); 29-36 2414-3278 0258-6452 spa http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/575/459 |
| institution |
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| collection |
OJS |
| country |
Panamá |
| countrycode |
PA |
| component |
Revista |
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| databasecode |
rev-cienciaagropecuaria |
| tag |
revista |
| region |
America Central |
| libraryname |
Centro de Información Documental Agropecuaria |
| language |
spa |
| format |
Digital |
| author |
Pinzón, B. R. González, J. |
| spellingShingle |
Pinzón, B. R. González, J. HAS NO TITLE. |
| author_facet |
Pinzón, B. R. González, J. |
| author_sort |
Pinzón, B. R. |
| title |
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| title_short |
HAS NO TITLE. |
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has no title. |
| description |
An experiment was carried out to determine the effect of cutting interval and nitrogen fertilization on dry matter yields and chemical composition of Panama-Elephant grass (Pennisetum purpureum PI 300-086), locally known in Panama as “King Grass”. Dry matter yields were affected by cutting intervals and dose of nitrogen fertilizer (P<.01). These variables did not affect (P>.01) crude protein phosphorous, potassium and magnesium contents. Based on the maximum value of the marginal product, the following optimun fertilization rates at the different cutting intervals were recommended: 100 Kg N/Ha at 45 days, 200 Kg N/Ha at 60 days, and 50 Kg N/Ha at 75 days; however, higher fertilizer doses were still profitable. |
| publisher |
Instituto de Innovación Agropecuaria de Panamá |
| publishDate |
1978 |
| url |
http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/575 |
| work_keys_str_mv |
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