Compost tea and bioslurry as plant biostimulants. Part 2: biofertilizer test in ornamental flowers
The present study tested the effect of aerated (AM), non-aerated (NAM), a 1:1 combination of both compost teas (A-NAM), and bioslurry (B) as bio-fertilizers in two ornamental plants growing in different substrates. The present study aimed to evaluate the products as biostimulants in ornamental plant...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Taylor and Francis
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/16295 https://www.tandfonline.com/doi/10.1080/01904167.2023.2171883 https://doi.org/10.1080/01904167.2023.2171883 |
| Sumario: | The present study tested the effect of aerated (AM), non-aerated (NAM), a 1:1 combination of both compost teas (A-NAM), and bioslurry (B) as bio-fertilizers in two ornamental plants growing in different substrates. The present study aimed to evaluate the products as biostimulants in ornamental plants. Compost teas were brewed from a composted mixture of residues, while bioslurry was prepared, with fresh material and no aeration. Two ornamental plant species were used: Petunia hybrida and Impatiens walleriana. Experimental presented a completely randomized factorial design, with two factors: Biostimulants with 6 levels: AM, NAM, A-NAM, B, F (traditional fertilizer), and H2O (control); and Substrate, with 3 levels: sand, commercial, and compost. Bio-inputs presented variable properties and effects on plant growth, with significant interaction between factors. In sand, no effect of bioproducts on plant biomass, SPAD index and pigments content were observed. In compost, B significantly increased I. walleriana and P. hybrida dry biomass (1.75 ± 0.42 g and 1.54 ± 0.28 g, respect to 1.33 ± 0.18 g for H2O), while in the commercial substrate, only in P. hybrida (1.35 ± 0.44 g, regarding 0.42 ± 0.11 g for H2O). All bio-inputs increased pigments content of both plant species in all substrates. To our knowledge, this is the first record that B was tested, which increased plant biomass at similar values to traditional fertilizer. We demonstrated that the biostimulants brewed from organic residues might present the same performance as commercial fertilizers. |
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