Data/hora: 04/06/2024 00:25:11

Provedor de dados: | 63
País: | Brazil
Título: | Growth of bare root Pinus taeda, L. seedlings cultivated under five densities in nursery
Autores: | Carneiro,José Geraldo de Araújo; Barroso,Deborah Guerra; Soares,Luis Maurício da Silva.
Data: | 2007-02-01
Ano: | 2007
Palavras-chave: | Spacing; Erosion; Seedling quality; Morphological characteristics; Root growth.
Resumo: | Seedlings compete for nutrients, water and light. The available area for each seedling affects their behavior related to requirements for these resources. This experiment evaluated the influence of five plant densities on the growth of bare root Pinus taeda, L. seedlings in a nursery after outplanting. The analyzed characteristics were: height (H), root collar diameter (D), H/D ratio, and dry matter weight. Higher densities stimulated H growth and the lowest densities increased D average and dry matter weight and lowered the H/D ratio. Seedlings were distributed by H, D and H/D classes. Higher densities had a larger number of seedlings in larger H classes. Larger numbers of seedlings with larger D and lower H/D ratios were found in lower densities. Ten months after outplanting the seedlings grown in lower densities had higher survival percentages and growth. Some saplings of standardized heights were uprooted with the objective of studying their root systems. The lowest densities stimulated higher numbers of first and second order roots as well as fresh and dry matter weights of thin roots with mycorrhizae presence. In both parts of the experiment, the density of 278 seedlings m-2 yielded equivalent averages as compared to the lowest densities.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100004
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162007000100004
Formato: | text/html
Fonte: | Scientia Agricola  v.64 n.1 2007
Fonte: | info:eu-repo/semantics/openAccess