Dosis de fertilización de Nitrógeno (N) y Fósforo (P) en el cultivo del Girasol ( Helianthus annus L ) variedad: FS – 210738 en la zona del Bajo Mayo San Martín

• Autor: Castillo Díaz, Tedy
• Formato: tesis de grado
• Fecha de Publicación: 1996
• Institución: Universidad Nacional de San Martin - Tarapoto
• Repositorio: UNSM-Institucional
• Lenguaje: español
• OAI Identifier: oai:repositorio.unsm.edu.pe:11458/1165
• Enlace del recurso: http://hdl.handle.net/11458/1165
• Nivel de acceso: acceso abierto
• Materia: Análisis económico; Costos de producción

The work, was carried out in the experimental Station "El Porvenir" located in the valley of "Bajo Mayo" belonging to Province and region of San Martin (Peru). It is geographically located at 76º 21', west .longitud and 06° 34' south to Greenwich latitud and is at 230 m above sea level. It was evaluated the adecuate dose of N-P to sunflower cultivate (variety FS-210738). The dese corresponde at the combination of N-P 50-50 for wich i t was obtained the most copious output of grain; ( 12 % of humidity) the average was 2,720.27 Kg/Ha . the desing "Entire Randomized Block" with 3 x 4 adjusted factor it whose result was analysis through Duncan Multiple test and variation Analysis. The outcome demostrated that the most economic output of the grain/Kg/Ha for the producer, corresponding this at the combi nated dese of N-P at 50-25 respecti vely it has a output of 36.5 %, 50-50 with 31.9 % ; 25-50 with 27.lX and 50-00 with 20.9 % productivity. The experimental land was residual origin of mechanize flat land and rapidly inclined, with franco arcilloso texture it has rapidly alkaline reaction ( pH 7.13), it contains organic material medium (3. 45 %) nitrogen total medium (0.16%); phosphorus ( 3.5 •ppm) average it was used the fertilizing UREA and SPT ( N-P ) it was applied of the following way; the SPT of Ca it was incoporated after to prepare the land, the urea was applied in two fractions, the half at the seed1ng and the other half at to initiate the flowering.