ANÁLISE DO DESEMPENHO DO GIRASSOL DE ACORDO COM A ÉPOCA DE SEMEADURA

• DOI: https://doi.org/10.22533/at.ed.2782412086

• Palavras-chave: Helianthus annuus L, características agronômicas, produtividade.

• Keywords: -

• Abstract: The sunflower (Helianthus annuus L.) is an annual plant of the Asteraceae family of relevant economic importance due to its wide capacity for agronomic use. Among the information necessary for the development of the crop in a new cultivation site, the determination of the sowing time stands out. The objective of this study was to analyze the effect of sowing time on sunflower cultivation in Campo Verde. The analyses made during the experiment were, yield, capitulum circumference and mass of 1,000 achenes. The experiment was conducted at the Agronomy Experimental Station, at the Federal Institute of Mato Grosso - IFMT, São Vicente Campus, Campo Verde Reference Center, located in Campo Verde – MT. The values of productivity, capitulation circumference and mass of 1,000 achenes of the sowing that occurred in February were higher than in the sowing that occurred in March. The difference in productivity between the lowest and highest values was 2,761.89 kg ha-1, indicating that late sowing of sunflower in the second crop considerably reduces the productive capacity of the plant.