Resumen

GOMEZ-ESPINOZA, José et al. Grain yield and physico-chemical characteristics of barley as a function of planting date. Rev. fitotec. mex [online]. 2025, vol.48, n.3, pp.285-292.  Epub 13-Mar-2026. ISSN 0187-7380.  https://doi.org/10.35196/rfm.2025.3.285.

Barley (Hordeum vulgare L.) ranks fourth in cereal production worldwide after maize, wheat and rice. For good yield, an appropriate planting date is important, due to the variability in temperature and rainfall that may occur. With the aim of evaluating the effect of planting date on yield, physical quality and chemical characteristics of the grain in 10 malting barley genotypes and defining the optimal planting date, eight trials were established in Roque, Guanajuato, Mexico, four in the agricultural season 2021-2022 planted on November 30, December 15 and 30 and January 15, and four at the same dates of the agricultural season 2022-2023. A randomized complete block experimental design with three replications was used. Analysis of variance, means tests, principal component analysis, genotype-environment interaction and stability were performed. Significant differences in yield were found between varieties, planting dates and interactions. The highest yielding genotypes were Alina and Esperanza with 7.23 and 6.91 t ha-1, respectively; Alina stood out for both yield and stability. The planting dates that showed higher yield, physical quality, protein content and starch content in the grain were November 30 and December 15. Early planting dates favor yield and quality of barley in the Summer-Winter season in El Bajío, Mexico.

Palabras llave : Hordeum vulgare L.; genotype-environment interaction; irrigation conditions; planting date.

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