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Details for article 36 of 62 found articles
| Title: |
Nitrogen Release Patterns of Mixed Gliricidia sepium and Acacia auriculiformis Leaves as Influenced by Polyphenol, Lignin and Nitrogen Contents |
| Author: |
M.B. Oyun O. Kadeba V.A. Aletor |
| Appeared in: |
Journal of applied sciences |
| Paging: | Volume 6 (2006) nr. 10 pages 2217-2223 |
| Year: |
2006 |
| Contents: |
A field decomposition experiment was conducted for 120 days during the rainy season. Mixed leaf proportions of Gliricidia sepium (high quality litter i.e., high N, low lignin, low polyphenol) and Acacia auriculiformis (low quality litter i.e., high N, high lignin, high polyphenol) were placed in polyvinyl litter bags at 100 g bag-1. This was to evaluate the sensitivity of the quality of legume litter as predictor of the rate of decomposition and N release. The legume polyphenol concentration was significantly correlated with N release at the early stage of decomposition (8 days) (R2 = 0.619; p<0.05*) and at 120 days of decomposition (R2 = 0.880; p<0.05*). The C-to-N ratio of legume was significantly correlated with N release at 64 days (R2 = 0.617; p<0.05*) and 120 days (R2 = 0.6611; p<0.05*). The polyphenol-to-N ratio was only significantly correlated with N mineralization after 120 days (R2 = 0.881; p<0.05*). The polyphenol concentration appeared to be a good chemical indicator for N release during the early stage of decomposition while the polyphenol-to-N ratio appeared to be the best predictor of N mineralization at all stages. Also, N mineralization was only significantly correlated with the initial N concentration (R2 = 0.766; p<0.05*), polyphenol concentration (R2 = 0.643; p<0.05*) and polyphenol-to-N ratio (R2 = 0.664; p<0.05*) of legumes at 16 days of decomposition. Inspite of the changes anticipated in the factors controlling decomposition over a prolonged period, the predictive value of the initial composition of legume litter for N release appears largely valid. However the initial N concentration of legume litter was the best chemical index of N released when relying on simple measurements of initial legume constituents. |
| Publisher: |
Asian Network for Scientific Information, Pakistan (provided by DOAJ) |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 36 of 62 found articles
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