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Article

Efficiency of Phosphorus Use in Sunflower

1
Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró 59625-900, Brazil
2
Department of Agronomy, Universidade de Rio Verde, Rio Verde 75901-970, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: David Houben
Agronomy 2022, 12(7), 1558; https://doi.org/10.3390/agronomy12071558
Received: 7 April 2022 / Revised: 20 June 2022 / Accepted: 21 June 2022 / Published: 29 June 2022
Sunflower is an oleaginous plant of great importance worldwide that stands out in the production of edible oil and human food. The identification of differences between cultivars regarding the use of phosphorus and the production of achenes at different levels of phosphate fertilization is a viable strategy to allow its cultivation in soils with different concentrations of phosphorus, without compromising yield and reducing environmental damage associated with excessive applications of phosphate fertilizers. Thus, the objective of this study was to evaluate different levels of phosphorus fertilization and sunflower cultivars regarding the efficiency of phosphorus use in two agricultural crops. The experimental design was in randomized blocks with four replications in split-plots, where four doses of phosphorus (50, 100, 150, and 200 kg ha−1 of P2O5) were allocated in the plots, and in the subplots three sunflower cultivars (Aguará 06, Altis 99, and BRS 122). The phosphorus use efficiency of sunflower cultivars was estimated through agronomic efficiency, vegetative efficiency, agrophysiological efficiency, apparent recovery efficiency, and utilization efficiency. The dose of 50 kg ha−1 of P2O5 provided the best phosphorus efficiency indices for the different sunflower cultivars in the two studied crops. Cultivar Aguará 06 was more efficient in conditions with P2O5 supply below 150 kg ha−1, regardless of the crop. Sunflower cultivars had the best efficiency indices of phosphorus applied in the 2016 harvest. View Full-Text
Keywords: Helianthus annuus L.; efficiency indices; phosphate fertilization; genetic variability Helianthus annuus L.; efficiency indices; phosphate fertilization; genetic variability
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MDPI and ACS Style

de Oliveira, A.K.S.; Soares, E.B.; dos Santos, M.G.; Lins, H.A.; de Freitas Souza, M.; dos Santos Coêlho, E.; Silveira, L.M.; Mendonça, V.; Barros Júnior, A.P.; de Araújo Rangel Lopes, W. Efficiency of Phosphorus Use in Sunflower. Agronomy 2022, 12, 1558. https://doi.org/10.3390/agronomy12071558

AMA Style

de Oliveira AKS, Soares EB, dos Santos MG, Lins HA, de Freitas Souza M, dos Santos Coêlho E, Silveira LM, Mendonça V, Barros Júnior AP, de Araújo Rangel Lopes W. Efficiency of Phosphorus Use in Sunflower. Agronomy. 2022; 12(7):1558. https://doi.org/10.3390/agronomy12071558

Chicago/Turabian Style

de Oliveira, Anna Kézia Soares, Enielson Bezerra Soares, Manoel Galdino dos Santos, Hamurábi Anizio Lins, Matheus de Freitas Souza, Ester dos Santos Coêlho, Lindomar Maria Silveira, Vander Mendonça, Aurélio Paes Barros Júnior, and Welder de Araújo Rangel Lopes. 2022. "Efficiency of Phosphorus Use in Sunflower" Agronomy 12, no. 7: 1558. https://doi.org/10.3390/agronomy12071558

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