Resumo

AGUIRRE-RIVERA, Juan Rogelio; CHARCAS-SALAZAR, Hilario  e  DURAN-GARCIA, Héctor Martín. Green corn ear productivity in Rioverde, SLP, Mexico. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.7, pp.1563-1573. ISSN 2007-0934.

In the Rioverde region green corn ear (Zea mays L.) production is characterized by the use of traditional cultivars (land races), low density planting adjusted to residual fertility from previous vegetable crops, and low yields either of green ear or grain. Due to the minimum production costs for green corn ear and low selling prices for grain, profitability with green ear is higher than with grain. Profitability and yield of five traditional cultivars of corn for grain and green corn ear plus forage were compared with four improved grain cultivars sown under traditional and intensive systems. The experiments were established in lands of two villages with similar soils (Phaeozems) but using two sources of water (well and spring with less alkaline water). The 18 treatments resulting from combining nine cultivars (small plots) and two production systems (large plots), were allocated in an experimental design of split - plots in random blocks with five replicates. In both locations there were not significant differences in green corn ear yield owing to production system, but grain and green forage yield was significantly lower under the traditional system. In both production systems and locations, at last one improved cultivar exceeded statistically the traditional ones in green corn ear and grain production.

Palavras-chave : Zea mays; corn; green ear; grain; and green forage; production systems; traditional agricultural system.

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