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Nitrogen uptake by ryegrass from organic wastes applied to a sandy loam soil |
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| Authors: | C M D S Cordovil F Cabral J Coutinho & M J Goss |
| Institution: | Agricultural and Environmental Chemistry Department, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal;, Universidade de Trás-os-Montes, Soil Science Department –CECEA, ap. 1013, 5000-911 Vila Real, Portugal;, and Kemptville College, University of Guelph, Guelph, ON, Canada K0G 1J0 |
| Abstract: | Sandy‐textured Mediterranean soils are invariably depleted in organic matter and supply only small amounts of N to crops. To compensate for these deficiencies, we tested the N supply from six organic wastes applied to a Cambic Arenosol in pots growing ryegrass. The results showed that the behaviour of the wastes in supplying N to a ryegrass crop grown in this soil can be predicted by observing their performance in laboratory aerobic incubations. The N made available during these incubations fitted well to a one‐pool kinetic model. |
| Keywords: | Nitrogen mineralization organic wastes ryegrass sandy loam texture |