Least limiting water range for oil palm production in Amazon region, Brazil
AUTOR(ES)
Sato, Michel Keisuke, Lima, Herdjania Veras de, Ferreira, Raphael Leone da Cruz, Rodrigues, Sueli, Silva, Álvaro Pires da
FONTE
Sci. agric. (Piracicaba, Braz.)
DATA DE PUBLICAÇÃO
2017-04
RESUMO
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.
Documentos Relacionados
- Water retention and penetration resistance equations for the least limiting water range
- Soil resistance to penetration and least limiting water range for soybean yield in a haplustox from Brazil
- Least limiting water range in Oxisol under two conservation tillage systems in sugarcane farming
- PEDOFUNCTIONS APPLIED TO THE LEAST LIMITING WATER RANGE TO ESTIMATE SOIL WATER CONTENT AT SPECIFIC POTENTIALS
- Water availability to soybean crop as a function of the least limiting water range and evapotranspiration1