Abstract
Sunflower is one of the most important oleaginous crops designated for edible oil production in the world. However, Brazilian growers still do not have enough knowledge, and technical expertise, for expanding the sunflower crop yield through the adoption of new technologies, like the utilization of plant growth regulators (paclobutrazol). The aim of this work was to evaluate the effects of different doses (0, 50, 100, 150 and 200 mL ha-1) of the growth regulator paclobutrazol on agronomic characteristics of sunflower crop in Uberlandia, Minas Gerais State, Brazil. Treating the seed with paclobutrazol decreased the size of the disk flowers and the plant height, while the number of days to complete the development cycle increased. The yield was not affected by the different doses. The use of paclobutrazol in seed treatment is an interesting tool to manage the development of the sunflower crop, as it affects desirable parameters which does not reduce seed yield. Key words: Helianthus annuus L., paclobutrazol, biorregulator.  
Highlights
Sunflower (Helianthus annuus L.) is one of the main oleaginous crops designated for edible oil production in the world
The aim of this work was to evaluate the effects of different doses (0, 50, 100, 150 and 200 mL ha-1) of the growth regulator paclobutrazol on agronomic characteristics of sunflower crop in Uberlandia, Minas Gerais State, Brazil
The use of paclobutrazol in seed treatment is an interesting tool to manage the development of the sunflower crop, as it affects desirable parameters which does not reduce seed yield
Summary
Sunflower (Helianthus annuus L.) is one of the main oleaginous crops designated for edible oil production in the world. Considering the higher resistance to heat, drought and cold than most of the species grown in Brazil (Lima et al, 2014), sunflower areas expanded with about 25% in 2014/2015 as compared to the agricultural year of 2013/2014 (CONAB, 2015) This crop has received more attention due to its good results as an option to succession planting and crop rotation, animal feed, honey production and functional human nutrition (Faria et al, 2015; Ungaro et al, 2009). Since 2010, the Brazilian government demands that all diesel commercialized in Brazil should be admixed with at least 5% of biodiesel (Matsumoto et al, 2015)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
