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Appl. Sci. 2017, 7(3), 230; doi:10.3390/app7030230

The Application of Homogenate and Filtrate from Baltic Seaweeds in Seedling Growth Tests

1
Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland
2
Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Nora Fung-yee TAM
Received: 5 January 2017 / Accepted: 17 February 2017 / Published: 28 February 2017
(This article belongs to the Section Chemistry)
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Abstract

Algal filtrate and homogenate, obtained from Baltic seaweeds, were applied in seedling growth tests. Radish seeds were used in order to assess algal products phytotoxicity and their biostimulant effect on growth and nutrient uptake. Algal filtrate, at concentrations ranging from 5.0% to 100% was used for seed soaking and as a liquid biostimulant (soil and foliar application). Algal homogenate was developed for seed coating. Algal filtrate and homogenate were also enriched with Zn(II) ions in order to examine the influence on metal ion complexation. The optimal doses of algal filtrate and homogenate, as well as soaking time were established. Multi-elemental analyses of the raw biomass, filtrate, homogenate, and radish were also performed using ICP-OES (Inductively Coupled Plasma—Optical Emission Spectrometry). The best results in terms of seedlings’ length and weight were obtained using clear filtrate at a concentration of 50% applied to the soil and for homogenate applied at a dose of 50 mg/g of seeds. Clear filtrate at a concentration of 50% used for seed soaking for one hour showed the best results. The applied algal products increased the content of elements in seedlings. Among the tested products, a concentration of 50% algal filtrate is recommended for future pot and field experiments. View Full-Text
Keywords: Baltic macroalgae; filtrate/homogenate; chelating properties; biostimulant/seed coating; soaking; growth enhancement/seedling growth test; analytical methods Baltic macroalgae; filtrate/homogenate; chelating properties; biostimulant/seed coating; soaking; growth enhancement/seedling growth test; analytical methods
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Michalak, I.; Dmytryk, A.; Schroeder, G.; Chojnacka, K. The Application of Homogenate and Filtrate from Baltic Seaweeds in Seedling Growth Tests. Appl. Sci. 2017, 7, 230.

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