Least limiting water range for oil palm production in Amazon region, Brazil
Sci. agric
; 74(2): 148-156, Mar. - Apr. 2017. tab, graf
Article
em En
| VETINDEX
| ID: biblio-1497626
Biblioteca responsável:
BR68.1
Localização: BR68.1
ABSTRACT
In areas cultivated with oil palm, typically mechanized field operations using heavy vehicles may negatively affect soil physical properties and productivity. The aim of this study was to evaluate soil physical quality in an area cultivated with oil palm by monitoring the temporal variation of the soil water content and relating it to the critical limits of the least limiting water range. Soil bulk density (Bd), soil penetration resistance (SR), least limiting water range (LLWR), and water stress days (WSD) were used to assess soil physical quality in planting rows (PR) and the traffic zone (TZ) at depths 0-20, 20-40, and 40-60 cm. The Bd was higher and the LLWR was reduced in TZ only at the surface layer. The effect of temporal variation in soil water content on the soil physical quality was higher in TZ, mainly in subsurface layers. Bd and LLWR did not affect the fresh fruit bunch production; however, WSD in TZ at 20-40 and 40-60 cm layers provided evidence of effects of temporal variation of soil water content on oil palm productivity.
Palavras-chave
Texto completo:
1
Base de dados:
VETINDEX
Assunto principal:
Óleo de Palmeira
/
Elaeis guineensis
/
Ecossistema Amazônico
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Sci. agric
Ano de publicação:
2017
Tipo de documento:
Article