Nutrition and production of Helianthus annuus in a function of application of leaf silicon

Nutrition and production of Helianthus annuus in a function of application of leaf silicon

Silicon (Si) is important as it increases plant tolerance to abiotic stresses. However, studies on in foliar fertilization are still scarce. The objective of this research was to evaluate the effect of foliar application of silicon on nutrition and production of Helianthus annuus. The study was carr...

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Bibliographic Details
Published in:Journal of plant nutrition Vol. 42; no. 2; pp. 137 - 144
Main Authors: Flores, Rilner Alves, Arruda, Everton Martins, Souza Junior, Jonas Pereira de, de Mello Prado, Renato, Santos, Ana Carla Alves dos, Aragão, Amanda Sasamoto, Pedreira, Nícolas Gomes, da Costa, Cinthya Freitas
Format: Journal Article
Language:English
Published: Philadelphia Taylor & Francis 20-01-2019
Taylor & Francis Ltd
Subjects:
Chlorophyll
Dry matter
Fertilization
fertilizers
Foliar applications
Helianthus annuus
Leaf area
leaf silicate
Nutrition
nutritional efficiency
plant nutrition
Shoots
Silicon
sunflower
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Summary:Silicon (Si) is important as it increases plant tolerance to abiotic stresses. However, studies on in foliar fertilization are still scarce. The objective of this research was to evaluate the effect of foliar application of silicon on nutrition and production of Helianthus annuus. The study was carried with a completely randomized design, consisting of five doses of silicon (0; 0.84; 1.68; 2.52 and 3.36 mg L −1 ) applied as silicate, with four replicates. Biometric evaluations and relative chlorophyll index (RCI) measurements were performed, being also observed the dry matter production and the silicon use efficiency by plants. The RCI is not affected by the foliar application of Si, while the height and leaf area increase by 8.3 and 25.4%, respectively. Foliar Si application up to the dose of 3.36 g L −1 promotes linear increases in the dry matter production of shoots (32%), capitulum (19%) and the whole plant of sunflower (27%).
ISSN:0190-4167
1532-4087
DOI:10.1080/01904167.2018.1549678