Agroeeonomic analysis of the use of advaneed generations of improved eorn seed in high valleys of Mexico.
DOI:
https://doi.org/10.15517/am.v9i1.24629Abstract
The productive capacity of fue generations F1 (commercial seed) and F2 (recycled seed) from the H-34, H- 33, H-68, and H-36 corn hybrids, produced for high valleys of Mexico by the Centro Nacional de Investigaciones Forestales y Agropecuarias (lNIFAP) was evaluated. The simple cross of CIMMYT, and as a reference, of an open pollinated corn variety from INIFAP (V-23) were also evaluated. An analysis of yield and other agronomic characteristics of the materials was performed. Likewise, an economic analysis to determine the optimal alternative for growers concerning the use of seeds during two cycles, was undertaken. All of the hybrids showeda yield decrease when using F2 seed, compared to the use of F2 seed, with the decrease varying from 5.5% to 51.3%. The greatest yield decrease due to use of seed F2 corresponded to the simple hybrid H-34 (F2), which only yielded 4.327 kglha, as compared to 8.892 kg/ha for the corresponding F1 seed. Yield of the V-23 variety was 7.488 kg/ha, which was statistically surpassed by the CIMMYT F1 simple cross (9.930 kglha), and was not significantly different from H-34 (F1), H-33 (F1) - 8.887 kglha; H-36 (F1) - 9.133 kglha; and F2 CIMMYT simple crosses (8.999 kglha). Excluding the latter, no other genotype surpassed the yield of the F2 seed variety. Economic analysis was based on the yields' trial results, on information about prices of seeds and grains, and the seed/hectare rateo The best option for corn producers of the region is to use double hybrid commercial seeds (F1) in both years, which provides a marginal return rate of over 1.500%.
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BYERLEE, D.; M.L. MORRIS; M.A. LÓPEZ-PEREIRA. 1993. "Hybrid maize and the small-scale farmer: economic and policy issues." Documento presentado en el V Taller Regional de Maíz en Asia. Hanoi y Ho Chi Minh City: República Socialista de Vietnam. 35 p.
CERVANTES R.; RODRÍGUEZ V J., J.; GUEVARA C. J. 1987. "Listado de variedades liberadas por el INIA de 1942-1985." Publicación especial No. 122. México, D.E: INIFAP. 71 p.
CIMMYT. 1988. La formulación de recomendaciones a partir de datos agronómicos: un manual metodológico de evaluación económica. Edición completamente revisada. México D.F: CIMMYT. 80 p.
ESPINOZA C.; TADEO R. A., M.; VALDlVIA B. R. 1990. "Capacidad productiva de semilla F1, F2 y F3 del híbrido simple de maíz H-34." In Resúmenes del XIII Congreso Nacional de la Sociedad Mexicana de Fitogenética, ESAHE. Cd. Juárez, Chihuahua, México. 371 p.
LÓPEZ-PEREIRA, M.A.; ESPINOSA CALDERÓN, A. 1993. "Análisis económico de la producción y uso de semilla mejorada de maíz: El caso de México." Documento presentado en la XXXIX Reunión Anual del PCCMCA. Guatemala, Guatemala. 15 p.
LÓPEZ-PEREIRA, M. A. 1994. "Las industrias de semilla de maíz de Centro América y México: Relaciones entre los sectores público y privado." Documento presentado en la XL Reunión Anual del PCCMCA. San José, Costa Rica. 21 p.
LÓPEZ-PEREIRA, M.A.; J.C. GARCIA. 1994. "Las industrias de semilla de maíz de Brasil y México: Desarrollo histórico, temas de actualidad y prospectos para el futuro." Borrador. Programa de Economía. México D.E CIMMYT. 123 p.
MOLlNA M., J.c. 1984. Aprovechamiento de las generaciones avanzadas de maíz (Zea mays L.) H-133 en Valse-quillo, Puebla. Tésis Profesional. Chapingo, México: UACH. 87 p.
ORTÍZ T., E. 1990. Rendimiento de híbridos de maíz (Zea mays L.) de la zona de transición El Bajío-Valles Altos, por efecto de la utilización de semilla de generaciones F1 y F2. Tesis profesional. Chapingo, México: UACH. 62 p.
RAMÍREZ V., P., BALDERAS M., M.; GERÓN X, E 1986. "Potencial productivo de las generaciones avanzadas de los híbridos tropicales de maíz H-503, H-507 y H-510." Fitotecnia 8:20-34.
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