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Title Effects of the application of microbiologically activated bio-based fertilizers derived from manures on tomato plants and their rhizospheric communities
ID_Doc 9463
Authors Clagnan, E; Cucina, M; De Nisi, P; Orto, M; DImporzano, G; Kron-Morelli, R; Llenas-Argelaguet, L; Adani, F
Title Effects of the application of microbiologically activated bio-based fertilizers derived from manures on tomato plants and their rhizospheric communities
Year 2023
Published Scientific Reports, 13.0, 1
Abstract Bio-based fertilizers (BBFs) recovered from animal manure are promising products to optimise resources recovery and generate high agricultural yields. However, their fertilization value may be limited and it is necessary to enrich BBFs with microbial consortia to enhance their fertilization value. Three specific microbial consortia were developed according to the characteristics of three different BBFs produced from manure (bio-dried solid fraction, solid fraction of digestate and biochar) to enhance plant growth and product quality. A greenhouse pot experiment was carried out with tomato plants grown with microbiologically activated BBFs applied either as N-organic fertilizers or as an organic amendment. A next generation sequencing analysis was used to characterise the development of each rhizospheric community. All the activated BBFs gave enhanced tomato yields (fresh and dry weight) compared with the non-activated treatments and similar to, or higher than, chemical fertilization. Concerning the tomato fruits' organoleptic quality, lycopene and carotenoids concentrations were improved by biological activation. Metagenomic analysis points at Trichoderma as the main driver of the positive effects, with the effects of added bacteria being negligible or limited at the early stages after fertilization. In the context of the circular economy, the activated BBFs could be used to replace synthetic fertilisers, reducing costs and environmental burdens and increasing production.
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