IRRIGATED MAIZE CROP: GRAIN YIELD IN TWO SOWING SEASONS IN THE MUNICIPALITY OF TERESINA, PIAUÍ | Zendy

M. J. Cardoso | Zendy; H. W. L. de Carvalho | Zendy; L. M. P. Rocha | Zendy; LAURO MOREIRA GUIMARÃES | Zendy; P. E. de O. Guimarães | Zendy

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IRRIGATED MAIZE CROP: GRAIN YIELD IN TWO SOWING SEASONS IN THE MUNICIPALITY OF TERESINA, PIAUÍ

Author(s) -

M. J. Cardoso,

H. W. L. de Carvalho,

L. M. P. Rocha,

LAURO MOREIRA GUIMARÃES,

P. E. de O. Guimarães

Publication year - 2020

Publication title -

revista brasileira de milho e sorgo

Language(s) - English

Resource type - Journals

eISSN - 1980-6477

pISSN - 1676-689X

DOI - 10.18512/rbms2020v19e1129

Subject(s) - sowing , irrigation , randomized block design , yield (engineering) , agronomy , grain yield , hybrid , crop , crop yield , mathematics , biology , metallurgy , materials science

The objective of this work was to evaluate commercial maize hybrids, under conventional sprinkler irrigation, in two sowing seasons (July and August 2017), in the municipality of Teresina, Piaui. A randomized block design was used, with two replications and 39 treatments (commercial maize hybrids). The characteristics evaluated were grain yield, water use efficiency, number of ears and number of grains per area. For the experiment with sowing done in July 2017, the average grain yield was 9.82 Mg ha-1 and the water use efficiency was 1.9 kg m-3, which are, respectively, 4.7 % and 15.8 % higher in relation to the experiment with sowing done in August 2017. Regardless of the sowing season, grain yields over 10.0 Mg ha-1 of three hybrids (LG 6418, CD 3880 PW and 2A 401 PW) stand out. The yield components, number of kernels per ear and grain mass per ear, show high values of correlation (over 0.80) with grain yield.

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