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Effect of Composting Methods of Manures on Arylsulfatase Activity in Sandy Soil | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 21, Issue 2, 2010, Pages 1-10 | ||
| Author | ||
| Mohammed A. Abdulkareem | ||
| Abstract | ||
| Addition of compost from various sources and of different maturity may affect the soil biochemical properties. Four manure sources (poultry, goat, sheep and cattle) were composted at three methods; aerobic decomposition , anaerobic decomposition, and soaking in water then added to sandy soil at rates of 0 , 2 , 4 , and 6% w/w based on dry soil weight . Samples incubated for 40 days at 25 ºC . Arylsulfatase activity was assayed after 10 , 20 , 30 and 40 days of incubation .Results showed that addition of composts at all application rate and decomposition methods increased arylsulfatase activity significantly compared with control. Soil treated with poultry compost showed highest enzyme activity among other composts under study. Arylsulfatase activity increased significantly ( P < 0.01 ) with increasing application rates of compost . Data also revealed that treated soil with manures composted by aerobic method give highest activity ( 167.70 μg ρ– nitrophenol gm soil–1 hr–1) compared with other methods (155.56 and 159.57 μg ρ– nitrophenol gm soil–1hr– 1 for anaerobic method and soaking method , respectively | ||
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