N8K2FHZN

3590

20 avril 2021 08:41

30 avril 2021 15:33

Intensive agricultural practices are leading to loss of soil fertility and overexploitation of natural resources which cause nutrients imbalance and further impair ecosystem services. Organic farming (OF), also coupled with minimum tillage and crop rotations, represents one of the strategies to limit this process and maintain soil functions. In a two-year field trial, organic farming practices, including a set of fertilizations combined with crop rotations and association with nitrogen fixing cover crops, were compared. The aim of this research was to assess in the short-term the effects on soil organic carbon, aggregate stability, and soil enzymes activities of using a combination of promising management practices in the delta region of the Po river. Results did not show improvements in organic carbon content and soil aggregate stability. Conversely, enzymatic activities were always significantly higher in OF treatments than the conventional one. Crop rotation and associated legumes were effective in enhancing β-glucosidase and P fixation through phosphatases activities. The present work suggests that an effective choice of crop species coupled with legumes can enhance biological activity re-starting main mechanisms of microbial development even without a contemporary increase of organic matter.

None

• AB - Modalité bio
• FREDO biologie et travail du sol
• FREDO fertilisation
• FREDO rotation culturale
• GEO Italie
• soil quality
• comparaison
• fertilité

• associated crops
• crop rotation
• minimum tillage
• soil aggregate stabilty
• soil organic carbon
• soil quality

Agronomy

11

724

2021/4

3 avril 2021

10.3390/agronomy11040724 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique