Developing and testing of new microbiological preparations for improvement of crop productivity Project leader Kaspars Kampuss Team of project Kaspars Kampuss Madara Misule Irina Sivicka Ingrīda Augšpole Duration 2021 - 2023 Research focus 4. Development and adaptation of technologies for obtaining high-value agricultural and forest products, as well as in veterinary medicine Source of funding National grant Project partners Farms “AKMENTIŅI”“KLĪVES”“RAITI”LTD “VA AGRO”Latvian Fruit Growers Association Description of project The aim of research The aim of the project is to develop plant growth stimulating preparations using unicellular microalgae biomass extracts and to test their effectiveness in plantings of various crops both under controlled conditions in vegetation containers and under variable production conditions The tasks of project: To increase the range of plant stimulating and protective preparations of natural origin produced in Latvia, and to investigate the applicability of a relatively new technology – microalgae extracts grown in bioreactors – in integrated and organic agriculture in open field and covered (greenhouse) areasTo approve a set of methods and technological solutions unprecedented in Latvia for the cultivation of various algae species under controlled conditions and processing for the production of bioactive extracts, as well as to study the plant growth, yield and stress tolerance stimulating properties of the obtained algae extracts, which can serve as the basis for the further development and production of a wide range of plant growth stimulating preparations of algae originTo encompass the cooperation of scientific research institutions and several farms in the development of new methods and crop products and also envisages further potential commercialization of new products, further research into the properties of algae extracts, bioactive substances and their molecular mechanisms of action for the future development of a sustainable knowledge-based bioeconomy Results Kampuss K., Semjonovs P., Koļesovs S., Afoņina K., Bāliņš A. (2024) Response of raspberries to treatments with Spirulina sp., Dunaliella sp. and Chlorella sp. extractions. Research Journal of Biotechnology, 19(3): 51-57; Augšpole I., Sivicka I., Kampuss K., Semjonovs P., Missa I. (2024) Biologically active compounds in tomato fruits under the application of water–ethanol Spirulina, Dunaliella and Chlorella microalgae extracts on plants' leaves. International Journal of Plant Biology, 15(4): 1338-1352; Augšpole I., Sivicka I., Kampuss K., Semjonovs P. (2024) Effect of treatment with microalgae extracts to some morphological and biochemical parameters of tomato leaves. AGROFOR International journal, 9(3): 30-38; Sivicka I., Kampuss, K. Semjonovs P. (2025) Effect of treatment with microalgae extracts on growth and development of tomato seedlings. Acta Horticulture, 1416: 51-58.