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Research Article Open access CC BY 4.0

Performance of Sunflower Hybrids Cultivated in Different Sowing Seasons in Mato Grosso, Brazil

Flávio Carlos Dalchiavon, Marcelo José Marchesini, Anderson Morais Kimecz, Diego Hahn Machado, Claudio Guilherme Portela de Carvalho

Journal of Experimental Agriculture International · pp. 1–8 · Published 30 Nov 2018

10.9734/JEAI/2018/45302

Abstract

This study aimed to evaluate the agronomic performance of five sunflower hybrids during two sowing seasons in Campo Novo do Parecis, the main sunflower producing municipality of Mato Grosso, Brazil. The trials were sown in March 2016 (second summer crop) and October 2017 (main summer crop) in a completely randomised block design with five hybrids (ACA 869, ACA 889, 13P30, 15P29, SYN 045) and five replicates. The hybrids showed higher achene yield in the second summer crop due to their lower incidence of Alternaria leaf spot. This increase was reflected in the largest number of achenes per head and mass of a thousand achenes. The hybrids SYN 045, 15P29, ACA 869 and ACA 889 showed satisfactory achene yield in the second summer crop. The SYN 045 hybrid presented higher values for shoot dry mass and shoot green mass in the two sowing seasons and therefore greater potential for silage. The cultivation of sunflower hybrids in the main summer crop in Campo Novo do Parecis (MT) may show low achene yield when satisfactory control of the Alternaria leaf spot is not established.

Achece yield Helianthus annuus second summer crop

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Cited by 1

Agronomic Performance of Sunflower Hybrids in the Mid-Northern Region of Mato Grosso, Brazil

F. C. Dalchiavon, Welington Junior Cândido da Silva, Rosivaldo Hiolanda · Journal of Agricultural Sciences · 2020

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