Utilizzo di compost a differente rapporto C/N in coltura protetta - Use of compost at different C/N ratio incrops under plastic cover

Intensive agriculture determines a decrease in soil quality mainly due to a strong organic matter reduction. Use of organic amendments is generally seen as a key tool for restoring soil health and sustainability in intensive agriculture systems,. Aim of this work was to study the recovery of fertility in agricultural soils of Southern Italy cultivated under permanent plastic cover, by supplying organic amendments characterized by a slow mineralization, such as wood scraps. After yearly addition of organic amendments, crop yields and soil quality were evaluated for two years by monitoring the main chemical, biochemical and biological properties. Results showed positive effects of organic amendments on soil chemical properties, in particular as improvement to organic carbon and nutrient contents, and to biological properties as well. Our results demonstrated that the use of compost enriched with low mineralization materials can enhance soil chemical biochemical and biological properties, improve crop yields, and, above all, guarantee an organic matter recovery that kept stable over time.