Lake-peat as soil amendment. Effect on some physical properties and nitrogen leaching [Hordeum vulgare]
1995
Pardini, G. | Volterrani, M. | Grossi, N. | Miele, S. | Gaetani, M. (Pisa Univ. (Italy). Dipartimento di Agronomia e Gestione dell'AgroEcosistema)
A lysimetric study was carried out to evaluate the fertilizer effect of peat extracted from the Massaciuccoli (Lucca) lake bed when added to two different soils: LSC soil (Loam-Silt-Clay) and SL soil (Sandy-Loam). Particular attention was addressed to nitrogen leaching. In each soil peat was applied at 0, 10, 20 and 30% of mixture dry weight. The trial crop was barley. In both soils peat addition increased nitrogen uptake and grain nitrogen content. Total drainage water was lower at higher peat levels. Nitrogen losses were higher in LSC soil, in absence of peat. On the other hand at 20 and 30% peat, nitrogen losses were higher in SL soil. Peat also increased aggregate stability of SL soil, while aggregate stability of LSC soil was influenced negatively. Water infiltration rates rose with increasing peat levels in both soils, especially in LSC soil. The peat trial was shown to be an organic nitrogen-supplying material, which is also capable of improving soil physical properties. However doses should be controlled, as its use can increase nitrogen concentration in drainage water
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