Abstract

DIAZ LOPEZ, E et al. Fertilization effects with P on accumulated leaf area duration, biomass and yield of three cultivars of maize in Toluca, Mexico. Phyton (B. Aires) [online]. 2015, vol.84, n.2, pp.319-330. ISSN 1851-5657.

The effect of six phosphorus levels (0, 40, 80, 120, 160 and 200 kg/ha) on the duration of cumulative leaf area, biomass and agronomic yield was determined in the maize cultivars: Amarillo Almoloya, Cacahuacintle and Condor in 2010 and 2011. Such cultivars were sown in the Cerrillo Piedras Blancas Mexico. A completely randomized complete block design with factorial arrangement was utilized. High phosphorus levels (120, 160 and 200 kg/ha) positively affected the duration of cumulative leaf area; greatest values were obtained in Cacahuacintle. A greater duration of accumulated leaf area contributes to determine high values of biomass accumulation and grain yield in this cultivar. Leaf area duration appeared to be a useful tool for evaluating different genotypes in a given environment.

Keywords : Cultivars; Biomass; Yield; Free pollination; Maize; Leaf area; Phosphorus.

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