Effect of environment friendly fertilizer management (compost, sludge, biochar) on fruit composition

Abstract: 
Effect of environment friendly fertilizer management (compost, sludge, biochar) on fruit composition In the recent years, the use of different environment fiendly organic fertilizers has been increased to replace chemical nutrients in fruit tree fertilizer management. Among them composted organic materials from municipal solid waste (MSW), sewage sludge, biochar, and other ricycling organic wastes have been tested in fertilization investigations on fruit trees, with excellent results in term of vegetative growth and tree yield. The impact of such management on fruit quality, fruit chemical composition and concentration of functional compounds (i. e. phenols, vitamins, antioxidants, etc.) is still unclear. Currently, in this Department, several investigations are in progress on nectarine, walnut, pomegranate, etc. The aim of the present proposal is to evaluate the long term effect of the organic fertilizer on fruit composition with particular regard on nutraceutic composition. In particular it will be evaluated: 1) the effect of application rate (0, 5 and 10 t ha-1 year-1) of MSW compost on fruit of a commercial nectarine (Prunus persica var. nectarina), and walnut (Juglans regia) orchard. 2) the effect of biochar on pech fruit, 3) the effect of MSW and biochar on pomegranate fruit.