04152nab a2200325 i 4500003000900000005001700009008004100026040001800067072001400085072000800099100003000107100002700137100002500164100002600189100003900215245010300254500006700357520140000424520154401824650001003368650001603378650002203394650003103416650001903447650002303466773022603489856007803715942001603793999001703809BR-BrBNA20230925162915.0230925b2020    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aF61b3210  aK10  aSouza, Aline das Graças  aSmiderle, Oscar José  aChagas, Edvan Alves   aAlves, Márcia Souza  aFagundes, Paulo Renato de Oliveira  aGrowth, nutrition and efficiency in the transport, uptake and use of nutrients in african mahogany  a
Publicação on-line; 33 ref.; 7 tables; Summaries (En, Pt)  a

ABSTRACT - African mahogany is a species preferred by many entrepreneurs as an investment in the forestry sector.
However, there are few studies or research on the species, especially in Brazil. The aim of this work was to study the
efficiency of nutrient uptake, accumulation, distribution and use in Khaya ivorensis and Khaya senegalensis, in addition to
aspects of growth variables and of dry matter partitioning as a function of mineral fertilisation. Morphological, physiological
and nutritional parameters were determined in the African mahogany plants 140 days after transplanting (DAT). The greatest
zinc (Zn) content was detected in the shoots of both the Khaya ivorensis and Khaya senegalensis plants, accounting for more
than 50% of the accumulated total of the plants with added nutrient solution. Maintaining the plants of Khaya senegalensis
and Khaya ivorensis with the use of nutrient solution provides the best conditions for nutrient use, and allows plants with
excellent morphological and nutritional characteristics to be ready for the field within five months after transplanting in
a shaded nursery. The most efficient uptake, transport and use of macro and micronutrients is found in the species Khaya
senegalensis with the addition of nutrient solution.


Key words: Khaya senegalensis. Khaya ivorensis. Seedling production. Nutrient partitioning. Mineral nutrition.

  a

RESUMO - O mogno africano é uma espécie que vêm se destacando na preferência dos empresários como opção no
investimento florestal. Porém, estudos e pesquisas sobre a espécie, principalmente no Brasil, são escassos. O objetivo
neste trabalho foi estudar a eficiência de absorção, acúmulo, distribuição e uso de nutrientes em Khaya ivorensis e Khaya
senegalensis, além de aspectos relacionados as variáveis de crescimento e de partição de matéria seca em função da adubação
mineral. Parâmetros morfológicos, fisiológicos e nutricionais foram determinados nas plantas de mogno africano aos 140 dias
após o transplantio (DAT). O maior teor de zinco (Zn) foi detectado nas brotações das plantas de Khaya ivorensis e Khaya
senegalensis, representando mais de 50% do total acumulado das plantas com adição de solução nutritiva. A manutenção das
plantas de Khaya senegalensis e Khaya ivorensis com o uso de solução nutritiva fornece as melhores condições para o uso
de nutrientes, e permite que plantas com excelentes características morfológicas e nutricionais estejam prontas para o campo
dentro de cinco meses após o transplantio em viveiro sombreado. A absorção, transporte e uso mais eficientes de macro e
micronutrientes são encontrados na espécie Khaya senegalensis com a adição de solução nutritiva.


Palavras-chave: Khaya senegalensis. Khaya ivorensis. Produção de mudas. Particionamento de nutrientes. Nutrição mineral.

  aMOGNO  aCRESCIMENTO  aNUTRIENTE MINERAL  aABSORÇÃO DE NUTRIENTES  aMATÉRIA SECA  aFISIOLOGIA VEGETAL0 04290925562dFortaleza-CE Universidade Federal do Ceará. Centro de Ciências Agrárias 2002o2023-436128tRevista Ciência Agronômica (Brazil)x0045-6888; 1806-6690 (on-line)gv. 51(2) p. 1-11; (2020)wBR2023001111  uhttps://www.scielo.br/j/rca/a/vSBC4Rv369tcyp3BKQZHRYH/?format=pdf&lang=en  cAnalítica  c10053d10053