INFLUENCE OF FOLIAR APPLICATION OF Fe, Zn, Mo AND LITHOVIT ON GROWTH AND PRODUCTIVITY OF STEVIA PLANT (Stevia rebaudiana, Bert.)

Document Type : Original Article

Authors

Hort. Dept., Fac. Agric., Zagazig Univ., Egypt

Abstract

This experiment was carried out to study the effect of foliar spraying of some
micronutrients (Fe + Zn + Mo at 0+0+0, 0.25+0.15+1.5 and 0.50+0.30+3 g/l, respectively), lithovit
(foliar fertilizer enhance plant photosynthesis by releasing CO2 in leaf stomata, at 0, 2, 4 and 6 g/l) and
their interactions on growth and productivity of stevia plant. The experiment was performed as a splitplot
in complete randomized block design with three replicates during 2015 and 2016 seasons in the
Expt. Farm, Dept. Botany, Fac. Sci., Benha Univ., Egypt. The obtained results cleared that micronutrients
of Fe + Zn + Mo at 0.50 + 0.30 + 3 g/l, respectively increased growth parameters (plant height,
number of branches and leaves/plant and dry weight of leaves/plant), yield components (total dry
leaves and herb yield/faddan), chemical constituents (reducing and non reducing sugars and total
chlorophyll content in leaves) and active ingredients (stevioside and rebaudioside glycosides in
leaves). Moreover, the highest values of these parameters were registered by foliar spray of lithovit at
4 or 6g/l without significant differences between them in the 2nd cut. Two compounds of glycosides of
Stevia rebaudiana plant were identified by high performance liquid chromatography (HPLC). The main
component was stevioside which followed by rebaudioside. Generally, spraying Stevia rebaudiana
plant three times per season with lithovit at 4 g/l plus Fe + Zn + Mo at 0.50, 0.30, 3 g/l, respectively
enhance plant growth, yield and chemical constituents as well as active ingredients.

Keywords

Zagazig Journal of Agricultural Research
Volume 45, Issue 6
November 2018
Pages 1901-1912

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