DALCHIAVON, Flávio C.; MALACARNE, Bruno J.    CARVALHO, Claudio G.P. de. Agronomic characteristics of sunflower (Helianthus annuus L.) genotypes second crop in the Chapadão of Parecis: MT. []. , 39, 1, pp.178-186. ISSN 0871-018X.  https://doi.org/10.19084/RCA15049.

This study aimed to evaluate the agronomic characteristics of different genotypes of sunflower sown as a second crop in the year 2014. The work was implemented in the experimental field of the Instituto Federal de Educação Ciência e Tecnologia de Mato Grosso - Campus Campo Novo do Parecis. The experimental design was a randomized block design with 16 treatments (16 genotypes) and four replications. The experimental plots consisted of four rows 6.5 m long with row spacing of 0.45 m, containing area of 11.7 m², totaling an area of 748 m². A population of 45000 plants per hectare is used. Data were subjected to analysis of variance and the Scott - Knott test at 5 % probability. For the mass of thousand achenes, genotypes that stand out are BRS 323, MG 360 and M734 while the most productive genotypes are MG 360, AGUARÁ 06, MG 305, AGUARÁ 04, CF 101, SYN 045, GNZ NEON, HELIO 251 and SYN 3950HO. For the achenes oil content, the MG 360 genotype has the highest value and stands in relation to other variables.

: Brazilian savannah; plant productivity; varietal performance.

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