| Registro completo |
| Provedor de dados: |
Acta Amazonica
|
| País: |
Brazil
|
| Título: |
Chemical and physical attributes and calcium, magnesium, potassium, and phosphorus in the soil of murundu fields in Brazil
|
| Autores: |
SANTOS,Fernando André Silva
PIERANGELI,Maria Aparecida Pereira
SILVA,Fernando Luiz
SERAFIM,Milson Evaldo
SOUZA,Célia Alves de
|
| Data: |
2015-06-01
|
| Ano: |
2015
|
| Palavras-chave: |
Amazon Basin
Earthmound
Soil fertility
Wetland
|
| Resumo: |
Fields of murundus (FM) are wetlands that provide numerous ecosystem services. The objectives of this study were to evaluate the chemical [organic carbon (OC), P, K+, Ca2+, Mg2+, Al3+ and H+Al] and physical [texture and bulk density (Bd)] soil attributes and calculate the organic matter (OM) and nutrient stock (P, Ca, Mg, and K) in soils of FM located in the Guapore River basin in Mato Grosso. Thirty-six sampling points were selected, and soil samples were collected from two environments: the murundu and plain area surrounding (PAS). At each sampling point, mini trenches of 0.5 × 0.5 × 0.4 m were opened and disturbed and undisturbed soil samples were collected at depths of 0-0.1, 0.1-0.2, and 0.2-0.4 m. In the Principal Component Analysis the variables H+Al (49%) and OM (4%) were associated with the F1 component and sand content (47%) with the F2 component. The FM had lower pH values and higher concentrations of K+, P, and H+Al than PAS at all depths (p < 0.05). Additionally, FM stocked up to 433, 360, 205, and 11 kg ha-1 of Ca, Mg, K, and P, respectively, for up to a depth of 0.2 m. The murundu stored two times more K and three times more P than that in the PAS. Our results show that the FM has high sand content and Bd greater than 1.5 Mg m-3, high acidity, low OC content, and low nutrient concentrations. Thus, special care must be taken to preserve FM such that human intervention does not trigger environmental imbalances.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000200101
|
| Editor: |
Instituto Nacional de Pesquisas da Amazônia
|
| Relação: |
10.1590/1809-4392201402954
|
| Formato: |
text/html
|
| Fonte: |
Acta Amazonica v.45 n.2 2015
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
|
