The kinetics curve of nitrogen mineralization from perennial leaves litter decomposed by earthworm (Phretima californica)
| Autor: | Makruf Nurudin, Eko Hanudin, Kartika Utami |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Atmospheric Science
Bamboo Soil Science Acacia Acacia decurrens 010501 environmental sciences lcsh:Plant culture 01 natural sciences lcsh:Agriculture Organic matter lcsh:SB1-1110 lcsh:Agriculture (General) Incubation Salacca 0105 earth and related environmental sciences chemistry.chemical_classification no3 decomposition biology Chemistry lcsh:S kinetics order 04 agricultural and veterinary sciences Mineralization (soil science) Plant litter biology.organism_classification Pollution n release lcsh:S1-972 Horticulture 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science nh4+ |
| Zdroj: | Sains Tanah: Journal of Soil Science and Agroclimatology, Vol 17, Iss 2, Pp 152-160 (2020) |
| ISSN: | 2356-1424 1412-3606 |
| Popis: | The kinetics of N release during the process of decomposition of organic matter is influenced by organic matter quality, temperature, humidity, and decomposer. Acacia, coffee, salacca, and bamboo leaf litter are native plants and be the pioneer plants on the slopes of Mount Merapi after the eruption in 2010. However, there is a lack of information on the N mineralization process from the leaves litter of acacia, coffee, salacca, and bamboo. The study aimed to determine the kinetics of N release from the litter leaves of acacia (Acacia decurrens), coffee, salacca, and bamboo, which were tested with three approaches, namely zero order, first order, and second order. The experiment was carried out using 10 Phretima californica earthworms that were incubated with 35g of annual plant leaves at 25°C. The levels of NH4+ and NO3- were measured at 0, 7, 15, 30, 45, 75, and 105 days after incubation by using the indophenol blue and derivative spectrophotometric method, respectively. Throughout the decomposition 105 days, the release of NO3- was higher than that of NH4+ due to the nature of NH4+ that was more easily immobilized than NO3-. The highest NO3- release in acacia litter (1.56 mg kg-1) occurred 30 days after incubation, while in coffee, salacca, and bamboo occurred 105 days after incubation, reaching 1.92 mg kg-1, 2.47 mg kg-1, and 1.88 mg kg-1, respectively. High N compound on the leaves litter unaffected to increasing total biomass earthworms in the end of incubation however promotes N mineralization rapidly. The kinetics of the second-order equation showed higher compatibility than the other equations to the N release with coefficient determination was higher. The kinetics of mineralization can be a strategy to use the leaves litter of perennial plants as sources of N nutrient input into soil. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|