Abstract
The work aimed at investigating the impact of various good quality soils of on vineyard productivity. Manure matured with a fast and controlled process and compost obtained from digestate of an organic fraction of municipal solid waste (OFMSW) were applied one time on a grapevine row, in two CAVIT vineyards. A physico-chemical characterization of the soils was carried out and biological quality indices QBS-ar (Arthropodological Biocenosis) were calculated. The vegeto-productive monitoring was performed by foliar nutrients analysis and measuring NDVI and SPAD indices. The organic source had a significant fertilizing effect, especially manure, which determined a nutrient increase in soil (P, K and Mg), a rise in photosynthetically active biomass, available nitrogen and potassium in plants. The effects on the biological community of soils and musts quality were negligible. The use of soil improvers could be an efficient strategy for the nutrition of not vigorous vineyards, which do not require high nitrogen inputs.
Highlights
In Trentino’s vineyards, the quantity of organic matter in the soils is slowly decreasing
The first soil improver considered in this work was the compost obtained from the aerobic treatment of digestate produced by dry anaerobic digestion of about 40,000 tons of OFMSW and 14,000 tons of green waste used as bulking agent, collected in the province
The first is a significant increase in the content of some nutrients (P, K, Mg) in both vineyards treated with manure and with compost
Summary
In Trentino’s vineyards, the quantity of organic matter in the soils is slowly decreasing. According to a research carried out at FEM, over a period of 30 years, from 1980 to 2011, the average content of organic matter in 63 soils went from 3.2 to 2.6% [1]. The availability of soil improvers has been growing in the province of Trento. The second was some locally produced matured manure, which, after being mixed with straw, was treated for 90 days in a turned pile. These products can represent good quality fertilizers for vineyards: if used together with other techniques, they allow for a reduction in the use of synthetic fertilizers
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