Abstract

SANGIOVO, Mateus Junior Rodrigues et al. Adaptability and popcorn sowing time for the southern region of Brazil. Rev. de Ciências Agrárias [online]. 2021, vol.44, n.4, pp.21-30.  Epub Oct 21, 2021. ISSN 0871-018X.  https://doi.org/10.19084/rca.25415.

This work aimed to evaluate the sowing time of popcorn hybrids and its impact on yield components and grain yield. The study was conducted in the experimental area of the Federal University of Santa Maria, Frederico Westphalen Campus, during the 2019/2020 agricultural year. The experimental design was of randomized blocks, in a bifactorial scheme, with four sowing times (08.21, 09.30, 09.30 and 10.19.2019) and six popcorn corn hybrids (H1, H2, H3, H4, H5 and H6), with four repetitions. The sowing time significantly influenced the main yield components, where sowing carried out earlier, until 09.11.2019 provided better conditions and resulted in a greater number of grains per ear and weight of a thousand grains. In the comparison between the hybrids evaluated, they resulted in high grain yield, with an average of 7,235 kg ha-1. The popcorn corn hybrids used must be sown by 09.11.2019 in the southern region of Brazil, as they produce 60% more, compared to late sowing, for the conditions in which the experiment was carried out.

Keywords : Zea mays L. evert; Yield components; Productivity..

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