Temperatura do ar, rendimento de grãos de milho e caracterização fenológica associada à soma calórica

Translated title of the contribution: Air temperature, maize yield and phenological characterization associated to heat units

João Luiz Gadioli, Durval Dourado-Neto, Axel García y García, Maria del Valle Basanta

    Research output: Contribution to journalArticlepeer-review

    26 Scopus citations

    Abstract

    With the purpose of evaluating the effect of the mean daily air temperature on grain yield and to predict the occurrence of the maize crop phenological phases as function of heat units, a field experiment was carried out using three hybrids with different heat unit requirements and three sowing dates. To estimate grain productivity, different yield components were determinated. Crop phenology was associated to the relative degree-days, for which a linear relation was observed. There is a mean air temperature corresponding to maximum grain yield, and the crop phenological phases can be predicted knowing the local historical temperature series and the thermic index for physiological maturity.

    Translated title of the contributionAir temperature, maize yield and phenological characterization associated to heat units
    Original languagePortuguese
    Pages (from-to)377-383
    Number of pages7
    JournalScientia Agricola
    Volume57
    Issue number3
    DOIs
    StatePublished - Jul 1 2000

    Keywords

    • Maize
    • Phenology
    • Thermic index

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