Author(s):
Flores, Rilner Alves ; Arruda, Everton Martins ; Souza Junior, Jonas Pereira de [UNESP] ; Prado, Renato de Mello [UNESP] ; Alves dos Santos, Ana Carla ; Aragao, Amanda Sasamoto ; Pedreira, Nicolas Gomes ; Costa, Cinthya Freitas da
Date: 2019
Persistent ID: http://hdl.handle.net/11449/185401
Origin: Oasisbr
Subject(s): plant nutrition; sunflower; nutritional efficiency; fertilizers; leaf silicate; plant nutrition; plant nutrition; sunflower; sunflower; nutritional efficiency; nutritional efficiency; fertilizers; fertilizers; leaf silicate; leaf silicate
Description
Made available in DSpace on 2019-10-04T12:35:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-20
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%).
Univ Fed Goias, Agron Sch, Dept Soil Sci, Goiania, Go, Brazil
State Univ Sao Paulo, Dept Soils & Fertilizers, Jaboticabal, SP, Brazil
State Univ Sao Paulo, Dept Soils & Fertilizers, Jaboticabal, SP, Brazil
