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Lettuce response to the application of two commercial leonardites and their effect on soil properties in a growing medium with nitrogen as the main limiting factor

2023Journal article Open access
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dc.contributor.authorArrobas, Margarida
dc.contributor.authorAndrade, Monica
dc.contributor.authorRaimundo, Soraia
dc.contributor.authorMazaro, Sergio Miguel
dc.contributor.authorRodrigues, M.A.
dc.date.accessioned2020-04-17T08:51:36Z
dc.date.available2020-04-17T08:51:36Z
dc.date.issued2023
dc.description.abstractThe aim of the study was to compare the effect of two leonardites (Humitec & REG; and Humic Gold & REG;) and an organic compost (Nutrimais & REG;) with an untreated control on lettuce. The pot experiment was carried out in NE Portugal, in autumn 2019 and spring 2020. Humitec, Humic Gold and Nutrimais were applied alone or as a supplement to nitrogen (N), phosphorus (P) and potassium (K). The experiment was arranged as a three-factor experimental design (organic amendment, NPK addition and growing season). The growing season significantly influenced lettuce dry matter yield (DMY), the spring cycle being the highest yielding (10.6 to 6.5 g plant(-1)). NPK fertilization also significantly increased lettuce DMY (11.2 to 5.9 g plant(-1)). The organic amendment significantly influenced the concentration of some nutrients in plant tissues and some soil properties, but it did not influence lettuce DMY. In respect of growing season, Nutrimais increased lettuce DMY in the first one. In relation to the absence or otherwise of NPK fertilization, Nutrimais increased lettuce DMY in the pots not receiving NPK. Leonardites did not influence soil properties, tissue nutrient concentration or lettuce DMY. The positive effect on the lettuce DMY of organic compost was probably due to the supply of N, apparently the plants' most significant limiting factor. The non-positive results of leonardites were due to the fact that they neither provided N, nor enhanced its bioavailability from the soil. Thus, NPK fertilizer and Nutrimais, a compost of low C/N ratio, providing some N had the greatest effect on lettuce DMY.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support from national funds FCT/MCTES, to CIMO (UIDB/AGR/00690/2020).
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationArrobas, Margarida; Andrade, Monica; Raimundo, Soraia; Mazaro, Sergio Miguel; Rodrigues, M.A. (2023). Lettuce response to the application of two commercial leonardites and their effect on soil properties in a growing medium with nitrogen as the main limiting factor. Journal of Plant Nutrition. eISSN 1532-4087. 46:17, p. 4280-4294pt_PT
dc.identifier.doi10.1080/01904167.2023.2225557
dc.identifier.eissn1532-4087
dc.identifier.issn0190-4167
dc.identifier.urihttp://hdl.handle.net/10198/21699
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor & Francispt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectFulvic acidspt_PT
dc.subjectHumic acidspt_PT
dc.subjectHumic substancespt_PT
dc.subjectLactuca sativa Lpt_PT
dc.subjectOrganic compostpt_PT
dc.subjectPlant biostimulants
dc.titleLettuce response to the application of two commercial leonardites and their effect on soil properties in a growing medium with nitrogen as the main limiting factorpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Plant Nutritionpt_PT
person.familyNameArrobas
person.familyNameRaimundo
person.familyNameRodrigues
person.givenNameMargarida
person.givenNameSoraia
person.givenNameManuel Ângelo
person.identifier.ciencia-id971C-B85B-1EC0
person.identifier.ciencia-id0C14-0903-C34B
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.orcid0000-0002-4652-485X
person.identifier.orcid0000-0002-6505-1445
person.identifier.orcid0000-0002-5367-1129
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id8575728800
person.identifier.scopus-author-id35270106800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd057ae6b-331c-4980-967d-0ce4fe1bcf8a
relation.isAuthorOfPublication22b68b4c-d245-4abe-8048-0921d1fa397f
relation.isAuthorOfPublication43621353-fa11-4559-9b24-27eba5ad3de0
relation.isAuthorOfPublication.latestForDiscovery22b68b4c-d245-4abe-8048-0921d1fa397f

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