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      Morphophysiological responses of Hymenaea stigonocarpa Mart. ex Hayne seedlings submitted to potassium fertilization Translated title: Resposta morfofisiológica de mudas de Hymenaea stigonocarpa Mart. ex Hayne submetidas à adubação potássica

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          Abstract

          Abstract Hymenaea stigonocarpa is anarboreal medicinal species used in the recovery of degraded areas. However, little is known about its nutritional requirements during the seedling phase, especially concerning to potassium. In this context, the aim of this study was to evaluate if potassium doses promote morphophysiological changes in Hymenaea stigonocarpa seedlings.A completely randomized design, consisting in six KCl doses (0, 50, 100, 150, 200 and 250 mg dm-3 KCl) and four replications was applied. Biometric, biomass, physiological and potassium content variables were assessed. Hymenaea stigonocarpa displayed significant physiological and biometric responses to potassium fertilization, with the highest values observed at doses ranging from 150 to 200 mg dm-3 KCl. Moreover, concentration effects were noted regarding to potassium contents in seedling leaves and stems.

          Translated abstract

          Resumo Hymenaea stigonocarpa é uma espécie arbórea medicinal usada na recuperação de áreas degradadas. No entanto, pouco se sabe sobre suas exigências nutricionais durante a fase de mudas, principalmente em termos de potássio. Dessa forma, objetivou-se com este trabalho avaliar se doses potássicas promovem alterações morfofisiológicas de mudas Hymenaea stigonocarpa. O delineamento utilizado foi inteiramente ao acaso, com seis doses (0, 50, 100, 150, 200 e 250mg dm-3 de KCl), e quatro repetições. As variáveis avaliadas foram: biométricas, biomassa, fisiológicas e teor de potássio. A espécie apresentou resposta significativa à adubação potássica para os parâmetros fisiológicos e biométricos. Os maiores valores obtidos foram nas doses entre 150 e 200 mg dm-3. E, ainda, observou-se efeito de concentração para o teor de potássio contido nas folhas e caule das mudas de Hymenaea stigonocarpa.

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          QUALITY APPRAISAL OF WHITE SPRUCE AND WHITE PINE SEEDLING STOCK IN NURSERIES

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            Potassium: A Vital Regulator of Plant Responses and Tolerance to Abiotic Stresses

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              Manual de análises químicas de solos, plantas e fertilizantes

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                Author and article information

                Journal
                cflo
                Ciência Florestal
                Ciênc. Florest.
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-9954
                1980-5098
                September 2021
                : 31
                : 3
                : 1427-1443
                Affiliations
                [1] Rio Verde Goiás orgnameInstituto Federal Goiano Brazil
                Article
                S1980-50982021000301427 S1980-5098(21)03100301427
                10.5902/1980509842754
                6ad17cd6-fa30-4afd-95ad-c53b6888c4b0

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 12 February 2021
                : 06 March 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 17
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                SciELO Brazil


                Jatobá-do-Cerrado,Crescimento,K,Early phase,Physiology,Growth,Fase inicial,Fisiologia

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