Leaf Angle as a Criterion for Optimizing Irrigation in Forest Nurseries: Impacts on Physiological Seedling Quality and Performance after Planting in Pots

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dc.contributor.authorda Silva, Richardson Barbosa Gomes [UNESP]
dc.contributor.authorSimões, Danilo [UNESP]
dc.contributor.authorWendling, Ivar
dc.contributor.authordo Prado, Débora Zanoni [UNESP]
dc.contributor.authorSartori, Maria Márcia Pereira [UNESP]
dc.contributor.authorBertholdi, Angelo Albano da Silva [UNESP]
dc.contributor.authorda Silva, Magali Ribeiro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2023-07-29T16:15:36Z
dc.date.available2023-07-29T16:15:36Z
dc.date.issued2023-05-01
dc.description.abstractSeedling species with different architectures, e.g., mean leaf angles, are often subjected to the same irrigation management in forest nurseries, resulting in wasted water and fertilizer and reduced seedling quality. We aimed to evaluate whether irrigation volumes applied to tree seedling species with different leaf angles affect the physiological quality in forest nurseries and, consequently, performance after potting. We submitted nine seedling species with different mean leaf angles to four daily water regimes (8, 10, 12, and 14 mm). In the nursery, the following physiological attributes were considered to assess seedling quality: leaf water potential, daily transpiration rate, SPAD value, chlorophyll a and b, anthocyanins, carotenoids, and total nutrient content. After potting, we evaluated height and stem diameter over 120 days. Leaf angle can be used as a criterion for optimizing irrigation in forest nurseries, avoiding water and fertilizer wastage, and increasing physiological seedling quality. Leaf angle measurements combined with concurrent assessments of leaf traits are helpful in further understanding the effects of leaf angle variation and water regime on seedling quality. For positive leaf angles, an irrigation volume of 8 mm is sufficient to increase physiological seedling quality. Conversely, seedlings with negative leaf angles show the opposite response, requiring the largest irrigation volume (14 mm) to increase physiological seedling quality, except when the mean leaf area is small and concentrated in the upper half of the stem, which facilitates the access of irrigation water to the substrate and thus satisfies seedling water requirements. For all species, up to 120 days after planting in pots, the effect of the irrigation volume that provides greater growth and physiological quality at the end of the nursery phase is not overcome by other irrigation volumes applied.en
dc.description.affiliationSchool of Agriculture São Paulo State University (Unesp)
dc.description.affiliationBrazilian Agricultural Research Corporation (Embrapa Forestry)
dc.description.affiliationInstitute of Biosciences São Paulo State University (Unesp)
dc.description.affiliationUnespSchool of Agriculture São Paulo State University (Unesp)
dc.description.affiliationUnespInstitute of Biosciences São Paulo State University (Unesp)
dc.identifierhttp://dx.doi.org/10.3390/f14051042
dc.identifier.citationForests, v. 14, n. 5, 2023.
dc.identifier.doi10.3390/f14051042
dc.identifier.issn1999-4907
dc.identifier.scopus2-s2.0-85160714344
dc.identifier.urihttp://hdl.handle.net/11449/250020
dc.language.isoeng
dc.relation.ispartofForests
dc.sourceScopus
dc.subjectforest restoration
dc.subjectleaf pigment content
dc.subjectleaf water potential
dc.subjectoverhead microsprinkler irrigation
dc.subjecttotal nutrient content
dc.subjecttranspiration
dc.titleLeaf Angle as a Criterion for Optimizing Irrigation in Forest Nurseries: Impacts on Physiological Seedling Quality and Performance after Planting in Potsen
dc.typeArtigo
unesp.author.orcid0000-0003-2445-8051[1]
unesp.author.orcid0000-0001-8009-2598[2]
unesp.author.orcid0000-0002-1008-6755[3]
unesp.author.orcid0000-0003-4119-8642[5]
unesp.author.orcid0000-0003-4427-2940[7]

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Artigos - Física e Biofísica - IBB