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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/67552
Title: 
Matéria seca, concentração e acúmulo de nutrientes em mudas de Eucalyptus grandis em função da idade
Other Titles: 
Dry matter, macronutrients concentration and content in Eucalyptus grandis seedlings according to the age
Author(s): 
Institution: 
  • Edifício Racz Center
  • Universidade de São Paulo (USP)
  • Universidade Estadual Paulista (UNESP)
  • Eucatex Florestal
ISSN: 
1413-9324
Abstract: 
E grandis seedlings of Bofete progeny, cultivated in nurseries of Eucatex Florestal, were collected at ages of 55, 69, 83, and 97 days, separated into leaves, stem, and roots. The seedlings were then placed in identified paper bags, and oven-dried until weight became constant. They were then weighed and chemically analyzed for the determinate of dry matter production, concentrations and accumulation of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, and Zn in the several seedling ages. The distribution of total dry matter weight complied with the following descending order: leaf > stem > roots. Conversely to expectations, the highest concentrations of nutrients occurred in leaves for N and Mn only. Seedling hardened process resulted in N and S deficiency. The sequence of macronutrient concentration in seedlings at the time of shipment was the following: leaf > root > stem for N; root = stem > leaf for P; leaf = root = stem for K; stem > root > leaf for Ca; root > leaf > stem for Mg and S. All macronutrient concentrations in organs decreased with age, except for Ca. Concentrations of Cu, Fe, and Zn in all seedling specimens decreased with age. The sequence of micronutrient concentrations in seedling specimens at the time of shipment was the following: root >stem = leaf for B; root > stem > leaf for Cu and Fe; root > leaf > stem for Zn, and leaf > stem > root for Mn. At the time of shipment, at 97 days of age, K was the most extracted macronutrient of all, followed in a descending order by Ca, N, Mg, P, and e S. At the end of the seedling production rotation, Mn was the most extracted micronutrient, followed by Fe, Zn, Cu, and B.
Issue Date: 
1-Dec-2003
Citation: 
Scientia Forestalis/Forest Sciences, n. 64, p. 136-149, 2003.
Time Duration: 
136-149
Keywords: 
  • Eucalyptus
  • Mineral nutrition
  • Nursery
  • Nutrient
  • Seedling
  • Nutrients
  • Seedlings
  • Chemical analysis
  • Concentration (process)
  • Cultivation
  • Nutrition
  • Seed
  • Plants (botany)
Source: 
http://www.ipef.br/publicacoes/scientia/nr64/cap12.pdf
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/67552
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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