|
|
|
| Registros recuperados: 587 | |
|
| |
|
|
| Cardoso, Arnon Afonso de Souza; Santos, José Zilton Lopes; Tucci, Carlos Alberto Franco; Farias, Elias Paiva; Moura, Rodolfo Pessoa de Melo. |
| Phosphate fertilization for native perennial species need studies in field conditions and seedling production. This study aimed to evaluate the effect of interaction between phosphorus and lime levels on growth and nutrients content of mahogany (Swietenia macrophylla King.), cultivated on a Yellow Latosol Dystrophic typic, in greenhouse. The experimental design was completely randomized factorial, with three replications. The treatments consisted of six doses of P (11; 22; 44; 66; 88 and 110 mg dm-3) and control treatment (without P fertilization), combined with 500 mg dm-3 of limestone or without limestone addition. The addition of increasing doses of P with lime provided increase on early growth and nutrient contents in seedlings of mahogany, however,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swietenia macrophylla; Phosphate fertilization; Liming. Engenharia Florestal Swietenia macrophylla; Adubação fosfatada; Calagem. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/667 |
| |
|
|
| Rios, Mary Naves da Silva; Sousa-Silva, José Carlos. |
| This study aimed to evaluate the formation of functional groups, in 1994 and 2012, in two areas of savanna with different fire history in Planaltina, Federal District, Brazil. In the Area 1 biennial burnings were applied in August 1988, 1990 and 1992; there was fire protection until July 1994 in the Area 2, the control area. Accidental fire occurred in both areas in August 1994, but from September 1994 to 2012 they were protected. These analysis included individuals with abundance ≥ 5 using the unweighted pair group method with arithmetic mean (UPGMA). The groups were defined according to the following attributes: dispersal and pollination syndromes, leaf phenology, life form, type of bark and ability to sprouting after fire. Both areas presented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional diversity; Sprouting; Forest rehabilitation Ciências agrárias; Recursos Florestais; Botânica; Ecologia Diversidade funcional; Rebrota; Reabilitação florestal. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1386 |
| |
|
|
| Freire, Juliana Müller; Jesus, Ederson da Conceição; Rouws, Janaína Ribeiro Costa; de Faria, Sérgio Miana; Zilli, Jerri Edson. |
| O objetivo deste trabalho é avaliar a resposta de mudas de Mimosa bimucronata (DC) O. Kuntze à inoculação com estirpes de rizóbio previamente selecionados, utilizar diferentes substratos em condições de viveiro. Utilizou-se o delineamento experimental em blocos ao acaso com parcelas subdivididas, testando-se três substratos (organomineral puro contendo barro, areia e esterco na proporção 1: 1: 1 v: v: v, organomineral misturado com 30% de palha e areia com vermiculita na proporção 1: 1 v: v) e quatro fontes de N (inoculação com as estirpes BR 3461 e BR 3470, tratamento controle com nitrogênio e controle sem adubação), totalizando 12 tratamentos. Foramavaliados altura e diâmetro do colo após 90 dias e massas da parte aérea, das raízes e dos nódulos secos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências agrárias engenharia florestal silvicultura Rizobactéria; Fixação de nitrogênio; Leguminosas arbóreas Rhizobacteria; Nitrogen fixation; Leguminous treess. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1132 |
| |
|
| |
|
|
| Thaines, Fabio; Braz, Evaldo Muñoz; Mattos, Patricia Povoa de; Thaines, Andreia Aparecida Ribeiro. |
| To quantify the stock of commercial timber in forests demands efficient methods, making possible to estimate efficiently and accurately the present and future timber volume. The aim of this work was to adjust the mathematical models used to estimate timber volume, allowing the determination of the timber potential of a region with greater accuracy and lower cost. The study was conducted at Lábrea, State of Amazonas, Brazil in an area of 6,000 ha, inserted in the Project Forest Management Seringal Iracema II. The forest is predominantly dense with emergent trees, also with the occurrence of open forest with bamboo and palms. For the process of adjusting the models to estimate the volume of commercial timber, 141 trees of commercial species were cubed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volume equations; Tropical forest; Forest management. Equações de volume; Manejo florestal; Floresta tropical. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/155 |
| |
|
| |
| Registros recuperados: 587 | |
|
|
|
