The effects of selenium application on replant soil and its content in apple leaves and fruits

Abstract

In the field experiment, with apple Jonagold variety, the effect of different ways of selenium application on replant soil was examined. The investigated orchard was planted on a brown forest soil with very low Se content (133 μg/kg). The selenium was applied as Na2SeO4. The experimental treatments were as follows: 0 kg Se/ha, 0.5 kg Se/ha, 1.5 kg Se/ha, 0.1% foliar spraying and by special root-soaking application. In each experiment five separated trees were treated and analyzed as one replication. Unfertilized apple trees gave the lowest Se concentration in leaves (0.03 μg/g) and fruits (0.04 (μg/g), while the highest dose of Se its increased significantly up to 3.22 μg/g and 2.81 μg/g respectively. The Se foliar application was less effective, especially on the Se content in fruit (0.20 μg/g), and this is not in accordance with the Se increase in leaves (1.78 μg/g).