Page 150 - Book of Abstracts

5 International Scientific Online Conference DOI: https://doi.org/10.15414/2021.9788055224015

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EFFECT OF CHLORELLA VULGARIS BEIJERINK AS A BIOFERTILIZER ON
SOLANUM LYCOPERSICUM L.
Natalia Zaimenko, Nataliya Didyk, Nadiia Rositska, Bogdana Ivanytska
M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine,
Kyiv, Ukraine; E-mail.: rositska.nadiia@gmail.com
The rapid increase in the world population poses a threat to food security, and a large
amount of chemical fertilizer were used to increase crop yields to meet the growing food
demand, but also have various harmful effects on both living organisms and environment.
Biofertilizers are known as eco-friendly, cost effective and renewable source of plant nutrients
to supplement and replace the chemical fertilizers for sustainable agriculture. Algal biomass is
reported to contain macronutrients as well as micronutrients, growth regulators, polyamines,
natural enzymes, carbohydrates, proteins, amino acids, and vitamins implemented for
improving vegetative growth. The aim of this work was to study the effect of Chlorella vulgaris
Beijerink strain on Solanum lycopersicum L. and to determine any potential application of C.
vulgaris microalga as a biofertilizer to improve the yield quality and productivity.
Test plants were cultured in 0.2 l plastic vessels in the phytochamber at temperature of
24–28 C, soil substrate humidity 60–70 %, and the illumination of 3000 lux. Chlorella culture
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fluid was added in the amount of 1, 3 and 10 ml per vessel once at the beginning of the
experiment. Tomatoes were grown for 6 weeks.
S. lycopersicum was sensitive to the stimulating effect of Chlorella culture fluid. The
introduction of Chlorella culture even in the minimum amount (1 ml per vessel) by 36–50 %
improved the germination of tomato seeds and intensified 2.4 times the accumulation of mass
by aboveground parts and roots of plants. The effect increased with the increasing
concentration of culture fluid. Analysis of the content of photosynthetic pigments (chlorophyll
a, b and carotenoids) in tomato leaves confirmed the positive effect of the culture fluid in the
activity of photosynthesis.
It can be concluded that Chlorella culture fluid can enhance the growth of tomatoes.

Keywords: Chlorella vulgaris, Solanum lycopersicum, photosynthetic pigments.

5 International Scientific Conference Agrobiodiversity for Improving the Nutrition, Health, Quality of Life and |149
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Spiritual Human Development
November 3 2021
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