Foliar fertilization with molybdenum in sunflower (Helianthus annuus L.)

P. Škarpa, E. Kunzová and H. Zukalová
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P. Škarpa: Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Mendel University in Brno, Brno, Czech Republic
E. Kunzová: Crop Research Institute, Prague, Czech Republic
H. Zukalová: Department of Crop Production, Czech University of Life Sciences Prague, Prague, Czech Republic

Plant, Soil and Environment, 2013, vol. 59, issue 4, 156-161

Abstract: The objective of the vegetation experiment established in 2008-2011 was to explore the effect of the time and dose of foliar molybdenum (Mo) application on the yield and quality of sunflower. Four treatments were established in the experiment: (1) control - not fertilised with Mo; (2) application of 125 g Mo/ha in the growing stage of 4 developed leaves (V-4); (3) application of 125 g Mo/ha at the beginning of elongation growth (R-1), and (4) split rate of Mo application of 62 g Mo/ha at stage V-4 (4 developed leaves) and 62 g Mo/ha at stage R-1 (terminal bud forms). Foliar application of molybdenum increased the biomass production of sunflower plants and its content in dry matter. A statistically significant effect of molybdenum foliar application on sunflower yields was found. Foliar application of Mo up to a dose of 125 g Mo/ha at the beginning of vegetation (stage V-4) and developmental stage R-1 increased yields of achenes. The relative increase in the oil content after foliar nutrition was not significant and ranged between 1.4% and 2.6%. Oil production increased due to increased yields and stabilised oil content. Foliar application of molybdenum had no effect on the content of oleic acid.

Keywords: sunflower nutrition; foliar nutrition; achene yield; oil content; fatty acid (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:59:y:2013:i:4:id:663-2012-pse

DOI: 10.17221/663/2012-PSE

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