Respuesta de niveles de npk en el crecimiento y producción de cebolla (allium cepa l.) var. “roja arequipeña” en pampas de SAN JUAN, LAREDO

• Autor: Amaya Robles, Julio Estuardo
• Formato: tesis de grado
• Fecha de Publicación: 2011
• Institución: Universidad Nacional de Trujillo
• Repositorio: UNITRU-Tesis
• Lenguaje: español
• OAI Identifier: oai:dspace.unitru.edu.pe:20.500.14414/7571
• Enlace del recurso: https://hdl.handle.net/20.500.14414/7571
• Nivel de acceso: acceso abierto
• Materia: nitrógeno, Cebolla, crecimiento, potasio, Allium cepa

With the objective to determine the influence of increasing levels of nitrogen and potassium in the growth and yield of onion bulbs, one experiment was carried in the Experimental Institute for Agricultural Research and Technology located in the area Pampas de San Juan Laredo, The freedom. The installation of the nursery was made on 03.10.2010 and 11.11.2010 the transplant, the assessments were made until 31.01.2011, the day of harvest. The experimental design was randomized complete block with 3x4 factorial arrangement with three replicates and twelve treatments resulting from combinations 60, 120, 180 and 240 kg N ha-1, and 40, 80 and 160 kg K2O has -1, using 80 kg as a single dose of P2O5.ha-1. We used certified seed onion var. "Red Arequipeña." We assessed plant height, number of leaves, diameter of the false stem, polar and equatorial diameter of the bulb, and performance. The results indicate that nitrogen promoted the further development of the plant due to increased availability of nitrogen on potassium whose responses to the study variables were independent, no variations were found with doses of N to the equatorial diameter being larger polar diameter . Linear response was obtained for the variable nitrogen height of 44.9 cm with a dose of 120 kg N.ha-1 and 14.7mm for the false stem diameter of 60 kg. of N.ha-1. Also checked for linear response to potassium polar diameter of 58,013 mm with a dose of 60 and 80 kg.ha-1 of NxK. Linear responses were obtained for the weight of bulbs with yields of 1.010 and 1.006 g-1 average of 10 bulbs, with combinations of N120xK80 x K80 and N60, and quadratic response to N dose of 120 kg.ha-1 of N with which promoted the increased production of onion bulbs.