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Seaweed extracts as plant biostimulants in agriculture

Code: 9781786768278
Izabela Michalak, Wrocław University of Science and Technology, Poland; Katarzyna Tyśkiewicz, Marcin Konkol and Edward Rój, New Chemical Syntheses Institute, Poland; and Katarzyna Chojnacka, Wrocław University of Science and Technology, Poland

Chapter synopsis: Biostimulants improve growth of plants by enhancing nutrient uptake efficiency. This chapter presents classification and legal aspects of biostimulants in terms of registration. Seaweed extracts improve abiotic stress tolerance of horticultural and agronomic crops. The mechanism of seeweed extracts action is shown with the special role on the effect of primary and secondary metabolites acting as growth stimulating and protecting factors, as well as antibacterial agents. Additionally, those preparations modulate growth rhizosphere microbial population. The mode of action is also related with plants physiology, in particular germination of seeds, growth of shoots, roots, fruit set. Biostimulants also have the beneficial influence of quality of food crops, which is of particular importance to the farmers. Further research is needed to confirm the effectiveness of biostimulatnts on plants and scientifically prove the mechanisms of action of these products.

DOI: 10.19103/AS.2020.0068.05
Table of contents 1 Introduction 2 Classification, legal requirements for biostimulant registration and the biostimulant market 3 Effects and mode of action of seaweed extracts on plant primary and secondary metabolism 4 Effect of seaweed extracts on plant physiology 5 Effects and mode of action of seaweed extracts on abiotic stress tolerance of horticultural and agronomic crops 6 Effect of seaweed extracts on modulation of the rhizosphere microbial population 7 Conclusion 8 References

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