Aplicación de N y de estiércol en la lechuga (Lactuca sativa L.)
The objetive of this study was to know the amount and the application form of nitrogen and the levels of poultry manure (P. M) more efficients in the lettuce (Lactuca sativa L. cv Great Lakes, crisp head salad) production We tested 3 levels of N (0 100 and 200 kg/ha); three levels of P. M. (0.20 and 40 m3/ha); and 3 application forms of nitrogen (total amount at transplanting time, on half at transplanting time, on half at transplanting and 1/2 20 days after, and one third at transplanting 1/3 20 days after and 1/3 40 days after transplanting). A factorial arrangement of treatments was used, in a randomized complete blocks desing, with three replications, at Santa Rosa Exp. Stn., Mérida, Venezuela, on a typic Humitropepts soil. The use of N increased the lettuce yield, however, there was not significative differences between 100 and 200 kg/ha Poultry manner also influenced the crop yield but we did not detect significative differences between 20 and 40 m3/ha. We did not find significative interactions between N and P M. applied. When N was used in fractions had effect neither on the crop yield nor on the loose heads percentage.
| Autores principales: | , |
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| Formato: | biblioteca |
| Idioma: | spa |
| Publicado: |
San José, Costa Rica Instituto Interamericano de Cooperación para la Agricultura (IICA)
(Oct
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| Materias: | NITROGENO, ESTIÉRCOL, LECHUGAS, LACTUCA SATIVA, ESTIÉRCOL DE POLLO, INVESTIGACIÓN, MÉTODOS DE CULTIVO, |
| Acceso en línea: | https://repositorio.catie.ac.cr/handle/11554/11963 |
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