Activities of soil enzymes in different land-use systems in middle terrace areas of Lampung province, South Sumatra, Indonesia

Enzymatic activity and mineralization of carbon and nitrogen in soil cultivated with coffee and green manures

“…Arylsulfatase activity varies widely in the literature (from 4 to 770 μg g -1 h -1 ), depending on different factors such as soils, experimental conditions, and climates, in many regions of the world, including Indonesia (Salam et al, 1999), USA (Dick et al, 1988;Bandick & Dick, 1999); Canada (Gupta et al, 1993), and Brazil (Matsuoka et al, 2003;Baligar et al, 1999). The results of this study were consistent with studies in the literature reporting that arylsulfatase activity was significantly affected by different soil management systems.…”

“…Studies include research in Indonesia (Salam et al, 1999), the USA (Dick et al, 1988), and Brazil (Fernandes et al, 1998;Baligar et al, 1999;Conte et al, 2002;Matsuoka et al, 2003;Carneiro et al, 2004;Balota et al, 2004). Under Brazilian conditions, acid phosphatase activity varies from 55 to 1165 (Baligar et al, 1999;Carneiro et al, 2004).…”

Activities of soil enzymes in fields continuously cultivated with cassava, sugarcane, and pineapple in middle terrace areas of Lampung Province, South Sumatra, Indonesia

“…However the negligible effect of the kind of plant on the enzymatic activities described before agreed well with the previous findings (Salam et al 1999) that no distinct differences in enzymatic activities in soils were observed among the land-use systems (secondary forests, cacao plantations, pineapple plantations, rubber plantations, mixed gardens, cassava fields, corn fields, a rice-field, etc.) in the central and northeastern regions of Lampung Province.…”

Efecto De La Cero Labranza Sobre Algunas Actividades Biológicas en Un Alfisol Del Sur De Chile

“…Se sabe que algunas enzimas del suelo proceden tanto de animales como de las raíces de plantas y microorganismos, se acepta que la mayor parte deriva esencialmente de los microorganismos (Tabatabai, 1994). Se han encontrado muy buenas correlaciones entre la actividad microbiana del suelo y los niveles de actividad enzimática (Salam et al, 1999, Kandeler et al, 1999, Alvear et al, 2005. Entre los muchos factores que pueden afectar a las actividades enzimáticas del suelo tienen especial importancia la especie cultivada y el uso de enmiendas (AcostaMartínez y Tabatabai, 2000).…”