Green manure effects on inorganic nitrogen dynamics in soil and its accumulation in grape must

The adoption of green manure practices in organic agriculture is increasingly spreading. This work aims to prove whether winter green manure—when compared to a traditional mineral fertilizer— alters the dynamics of inorganic nitrogen (NO 3 − and NH 4 + ) availability in soil and the yeast assimilabl...

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Bibliographic Details
Published in:BIO web of conferences 2019, Vol.13, p.4010
Main Authors: Zanzotti, Roberto, Mescalchin, Enzo
Format: Article
Language:English
Subjects:
Availability
Grapes
Manures
Mineral fertilizers
Musts
Nitrogen
Organic farming
Rainfall
Soil dynamics
Soils
Yeasts
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Summary:The adoption of green manure practices in organic agriculture is increasingly spreading. This work aims to prove whether winter green manure—when compared to a traditional mineral fertilizer— alters the dynamics of inorganic nitrogen (NO 3 − and NH 4 + ) availability in soil and the yeast assimilable nitrogen (YAN) in grape musts. During a two-year period, the soil nitrogen content was influenced by climatic trend and, especially, by rainfall. In fact, rainy periods reduced inorganic nitrogen availability in the soil. In both years, the green manure plot presented higher soil content of inorganic nitrogen at fruit-set, while different dynamics were shown over the following phenological phases. The must YAN concentration did not differ among treatments over the two-year experiment.
ISSN:2117-4458
2273-1709
2117-4458
DOI:10.1051/bioconf/20191304010