Resumen

TADEO-ROBLEDO, Margarita et al. Forage  and  grain  of  yellow  maizes  hybrids  for Mexico  high  valleys. Agron. Mesoam [online]. 2012, vol.23, n.2, pp.281-288. ISSN 2215-3608.

In this  work  the  objective  was  to determine the productivity of grain and forage of five yellow three-way  hybrids  compared  to  white  hybrids  developed by  FESC-UNAM and INIFAP, and the commercial  hybrid Buho from Asgrow. Three experiments were planted during 2009; two in CEVAMEX for evaluating grain yield and the other in the FESC-UNAM for evaluating forage production. For yield, the combined analysis detected highly significant differences for hybrids, hybrid trials and interaction x trials (P≤0.01). The coefficient of variation was 17.7 per cent and the overall average of 7,113 kg/ha. The white hybrids Puma 1167 and Puma 1163 had the best grain yielding 9,549 kg/ ha  and  8748  kg/ha,  respectively.  In  contrast,  the  yellow hybrids had a similar performance shown in previous years and represent  136.0% and 112.4% with respect to H-48. The  experiment  to  evaluate  forage  was  planted  with  a density of 70,000 plants/ha. Puma 1163 and Buho had better forage production (P≤0.05) than the other hybrids evaluated. Hybrid Puma 1163 presented  good  yields of grain, green forage and dry matter by what could be used in dual purpose, grain and forage production.

Palabras clave : silage; Zea mays L.; productivity; improved varieties.

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