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| Barros Filho,Nairam Felix de; Schumacher,Mauro Valdir; Neves,Júlio César Lima; Barros,Nairam Felix de; Valadares,Samuel Vasconcelos. |
| ABSTRACT For the development of nutrient budget models to recommend lime and fertilizers for agricultural and forestry crops, curves of plant growth and nutrient accumulation are required. Information about how nutrients are partitioned between the different plant organs is also necessary, but still scarce for pine in Brazil. This study evaluated the growth, biomass partitioning, and nutrient dynamics in pine forests in southern Brazil. To this end, we assessed unthinned 2, 4, 6, and 8-year-old stands of Pinus taeda L. Three plots of 20 × 30 m per stand were delimited, in which three trees of different classes of diameter at breast height (DBH) were chosen. These trees were measured, felled, and the weight of their fresh components (leaves, branches, bark,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pinus taeda; Nutrient content; Nutrient partitioning; Nutrient use efficiency. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100536 |
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| José,Jackson Freitas Brilhante de São; Silva,Ivo Ribeiro da; Barros,Nairam Felix de; Novais,Roberto Ferreira; Silva,Eulene Francisco; Smyth,Thomas Jot; Leite,Fernando Palha; Nunes,Flancer Novais; Gebrim,Fabrício Oliveira. |
| Understanding the magnitude of B mobility in eucalyptus may help to select clones that are more efficient for B use and to design new practices of B fertilization. This study consisted of five experiments with three eucalyptus clones (129, 57 and 58) where the response to and mobility of B were evaluated. Results indicated that clone 129 was less sensitive to B deficiency than clones 68 and 57, apparently due to its ability to translocate B previously absorbed via root systems to younger tissues when B in solution became limiting. Translocation also occurred when B was applied as boric acid only once to a single mature leaf, resulting in higher B concentration in roots, stems and younger leaves. The growth of B-deficient plants was also recovere by a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micronutrient; Forest nutrition; Translocation; Polyol. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600022 |
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| Pegoraro,Rodinei Facco; Silva,Ivo Ribeiro da; Novais,Roberto Ferreira de; Barros,Nairam Felix de; Fonseca,Sebastião. |
| O presente estudo teve o objetivo de avaliar os estoques de C e N nas frações lábeis e estáveis da MOS e da biomassa microbiana em resposta ao cultivo florestal com o uso de fertirrigação quando comparado ao cultivo convencional. Para tanto, duas áreas cultivadas com eucalipto num mesmo solo (Argissolo Amarelo), mas com manejos fertirrigado e convencional foram amostradas nas camadas de 0-10, 10-20, 20-40, 40-60 e 60-100cm de profundidade na linha e entrelinha de cultivo. A amostragem da entrelinha foi justificada pelo enleiramento e enterro de resíduos vegetais provenientes da colheita do cultivo anterior na entrelinha do cultivo atual. No final do ciclo de cultivo do eucalipto (sete anos), a deposição de serapilheira e os estoques de C e N na maioria das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Substâncias húmicas; Sistemas de manejo; Resíduos florestais. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000200008 |
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