Efficiency of Nitrogen Use in Sunflower
The large variation in the response of sunflower to nitrogen fertilization indicates the need for studies to better adjust the optimum levels of this nutrient for production conditions. Our objectives were to analyze the agronomic yield of sunflower cultivars as a function of nitrogen fertilization;...
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MDPI AG
2022-09-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/18/2390 |
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| author | Ester dos Santos Coêlho Almir Rogério Evangelista de Souza Hamurábi Anizio Lins Manoel Galdino dos Santos Matheus de Freitas Souza Francilene de Lima Tartaglia Anna Kézia Soares de Oliveira Welder de Araújo Rangel Lopes Lindomar Maria Silveira Vander Mendonça Aurélio Paes Barros Júnior |
| author_facet | Ester dos Santos Coêlho Almir Rogério Evangelista de Souza Hamurábi Anizio Lins Manoel Galdino dos Santos Matheus de Freitas Souza Francilene de Lima Tartaglia Anna Kézia Soares de Oliveira Welder de Araújo Rangel Lopes Lindomar Maria Silveira Vander Mendonça Aurélio Paes Barros Júnior |
| author_sort | Ester dos Santos Coêlho |
| collection | DOAJ |
| description | The large variation in the response of sunflower to nitrogen fertilization indicates the need for studies to better adjust the optimum levels of this nutrient for production conditions. Our objectives were to analyze the agronomic yield of sunflower cultivars as a function of nitrogen fertilization; indicate the cultivar with high nitrogen use efficiency; and measure the adequate N dose for sunflower through nutritional efficiency. The completely randomized block design with split plots was used to conduct the experiments. The treatments included five nitrogen rates being allocated in the plots and the four sunflower cultivars. To estimate the nutrient use efficiency in the sunflower, we measured agronomic efficiency (AE), physiological efficiency (PE), agrophysiological efficiency (APE), apparent recovery efficiency (ARE), and utilization efficiency (UE). The results indicate that all cultivars had a reduction in AE due to the increase in N doses in the first crop. For PE, the highest values were observed for Altis 99 during the 2016 harvest. In that same harvest, Altis 99 had the highest APE. The dose of 30 kg ha<sup>−1</sup> provided greater ARE for all cultivars in both crops, with greater emphasis on BRS 122 and Altis 99. The cultivation of cultivars Altis 99 and Multissol at a dose of 30 kg ha<sup>−1</sup> in is recommended semiarid regions. |
| first_indexed | 2024-03-09T22:47:19Z |
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| language | English |
| last_indexed | 2024-03-09T22:47:19Z |
| publishDate | 2022-09-01 |
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| record_format | Article |
| series | Plants |
| spelling | doaj.art-5677bbdacc1d40a58f28f4af83f7551e2023-11-23T18:27:08ZengMDPI AGPlants2223-77472022-09-011118239010.3390/plants11182390Efficiency of Nitrogen Use in SunflowerEster dos Santos Coêlho0Almir Rogério Evangelista de Souza1Hamurábi Anizio Lins2Manoel Galdino dos Santos3Matheus de Freitas Souza4Francilene de Lima Tartaglia5Anna Kézia Soares de Oliveira6Welder de Araújo Rangel Lopes7Lindomar Maria Silveira8Vander Mendonça9Aurélio Paes Barros Júnior10Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartament of Agronomic Engineering, Instituto Federal de Alagoas, Piranhas 57460000, AL, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartment of Agronomy, Universidade de Rio Verde, Rio Verde 75901970, GO, BrazilDepartament of Agronomic Engineering, Instituto Federal de Alagoas, Piranhas 57460000, AL, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilDepartment of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625900, RN, BrazilThe large variation in the response of sunflower to nitrogen fertilization indicates the need for studies to better adjust the optimum levels of this nutrient for production conditions. Our objectives were to analyze the agronomic yield of sunflower cultivars as a function of nitrogen fertilization; indicate the cultivar with high nitrogen use efficiency; and measure the adequate N dose for sunflower through nutritional efficiency. The completely randomized block design with split plots was used to conduct the experiments. The treatments included five nitrogen rates being allocated in the plots and the four sunflower cultivars. To estimate the nutrient use efficiency in the sunflower, we measured agronomic efficiency (AE), physiological efficiency (PE), agrophysiological efficiency (APE), apparent recovery efficiency (ARE), and utilization efficiency (UE). The results indicate that all cultivars had a reduction in AE due to the increase in N doses in the first crop. For PE, the highest values were observed for Altis 99 during the 2016 harvest. In that same harvest, Altis 99 had the highest APE. The dose of 30 kg ha<sup>−1</sup> provided greater ARE for all cultivars in both crops, with greater emphasis on BRS 122 and Altis 99. The cultivation of cultivars Altis 99 and Multissol at a dose of 30 kg ha<sup>−1</sup> in is recommended semiarid regions.https://www.mdpi.com/2223-7747/11/18/2390<i>Helianthus annuus</i> L.nitrogen fertilizationphenotypic plasticity |
| spellingShingle | Ester dos Santos Coêlho Almir Rogério Evangelista de Souza Hamurábi Anizio Lins Manoel Galdino dos Santos Matheus de Freitas Souza Francilene de Lima Tartaglia Anna Kézia Soares de Oliveira Welder de Araújo Rangel Lopes Lindomar Maria Silveira Vander Mendonça Aurélio Paes Barros Júnior Efficiency of Nitrogen Use in Sunflower Plants <i>Helianthus annuus</i> L. nitrogen fertilization phenotypic plasticity |
| title | Efficiency of Nitrogen Use in Sunflower |
| title_full | Efficiency of Nitrogen Use in Sunflower |
| title_fullStr | Efficiency of Nitrogen Use in Sunflower |
| title_full_unstemmed | Efficiency of Nitrogen Use in Sunflower |
| title_short | Efficiency of Nitrogen Use in Sunflower |
| title_sort | efficiency of nitrogen use in sunflower |
| topic | <i>Helianthus annuus</i> L. nitrogen fertilization phenotypic plasticity |
| url | https://www.mdpi.com/2223-7747/11/18/2390 |
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