During the winemaking and bottling processes a sludge is produced with in- teresting characteristics as organic fertiliser. The aim of this research was to investigate, in wheat, the changes caused by the application of win- ery sludge on grain yield, nitrogen and phos- phorus uptake and N leaching, in relation to soil texture and the amount of sludge applied. METHODS.Wheat was grown in open-air lysime- ters. The experiments were carried out on two soil textures (sandy-loam and clay-loam) and the winery sludge doses applied were 0, 53, 80, and 106 t ha-1 dry matter. RESULTS. Winery sludge had a positive effect on wheat plant growth, resulting in a high increase in grain yield as well as in above-ground and be- low-ground biomass. The positive effect was demonstrated in both soils. The increase in bio- mass weight corresponded to equal increases in N and P uptake by all plant parts. The applica- tion of winery sludge also resulted in an increase in the nitrate concentration in the percolation wa- ter and in the amount of N leached, particularly in the period after the sludge distribution. CONCLUSIONS. Winery sludge can represent an ef- fective resource utilizable in wheat cultivation. On the other hand, because of their chemical char- acteristic, they can increase the nitrogen leaching, increase that depend by the dose distributed and by the storage conditions in the winery.
Distribution of winery sludge on wheat
MASONI, ALESSANDRO;MARIOTTI, MARCO;ARDUINI, IDUNA;
2002-01-01
Abstract
During the winemaking and bottling processes a sludge is produced with in- teresting characteristics as organic fertiliser. The aim of this research was to investigate, in wheat, the changes caused by the application of win- ery sludge on grain yield, nitrogen and phos- phorus uptake and N leaching, in relation to soil texture and the amount of sludge applied. METHODS.Wheat was grown in open-air lysime- ters. The experiments were carried out on two soil textures (sandy-loam and clay-loam) and the winery sludge doses applied were 0, 53, 80, and 106 t ha-1 dry matter. RESULTS. Winery sludge had a positive effect on wheat plant growth, resulting in a high increase in grain yield as well as in above-ground and be- low-ground biomass. The positive effect was demonstrated in both soils. The increase in bio- mass weight corresponded to equal increases in N and P uptake by all plant parts. The applica- tion of winery sludge also resulted in an increase in the nitrate concentration in the percolation wa- ter and in the amount of N leached, particularly in the period after the sludge distribution. CONCLUSIONS. Winery sludge can represent an ef- fective resource utilizable in wheat cultivation. On the other hand, because of their chemical char- acteristic, they can increase the nitrogen leaching, increase that depend by the dose distributed and by the storage conditions in the winery.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
