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Lopedota O.,Cra Research Unit For The Study Of Cropping Systems | Leogrande R.,Cra Research Unit For The Study Of Cropping Systems | Fiore A.,Cra Research Unit For Cropping Systems In Dry Environments | Debiase G.,Cra Research Unit For Cropping Systems In Dry Environments | Montemurro F.,Cra Research Unit For The Study Of Cropping Systems
Journal of Plant Nutrition | Year: 2013

A three-year field experiment (2006-2008) was carried out in Mediterranean conditions to study the effects of organic fertilizers application on yield performance and plant nitrogen (N) status of melon crops. Soil properties at the end of experiment were further investigated. In a strip-plot experimental design, two irrigations and the following four fertilizer treatments were compared: mineral fertilizer (Min); commercial stable manure (Org); anaerobic digestate (WDD); composted municipal solid organic wastes (SUW). The results showed no statistical differences among the four different treatments on melon yields. Conversely, the highest irrigation treatment showed a significantly higher total yield (34%) and fruits number (26%). During cropping cycles, the Min treatment reached the highest mean nitrate content with an increase of about 59% and 154% respectively compared with Org and mean of WDD and SUW. The WDD and SUW significantly increased soil total, extracted and humified organic carbon of the 14, 22 and 12% compared with Min. Among treatments, no significant difference was found for heavy metals excepted for Cu, which reached the highest level in WDD treatment. © 2013 Copyright Taylor and Francis Group, LLC. Source


Ferri D.,Cra Research Unit For Cropping Systems In Dry Environments | Montemurro F.,Cra Research Unit For The Study Of Cropping Systems | Debiase G.,Cra Research Unit For Cropping Systems In Dry Environments | Fiore A.,Cra Research Unit For Cropping Systems In Dry Environments | And 2 more authors.
Fresenius Environmental Bulletin | Year: 2010

The aim of this study was to evaluate the effects of organic amendment on the evolution of soil organic matter content and humification rates, under fodder crops land utilization system. To accomplish this objective a research (autumn 2004 to summer 2007) was carried out at Foggia (Southern Italy) applying one agro-industrial anaerobic di-gestate and a on-farming compost on these three fodder crops (Italian clover, proteic pea and Italian ryegrass). In a split-plot experimental design with three replications the following fertilizing treatments were compared: i) mineral fertilization with chemical fertilizers (Min); ii) organic fertilization, with stabilized anaerobic digestate coming from wine distillery (Org-B); iii) organic fertilization, with olive-pomace compost (Org-C); iv) organic-mineral fertilization (Mix), with a commercial product. These treatments were compared with an unfertilized control (F0). After three years of organic amendments application (2004-2007), the Org-C treatment reached the highest content of soil total organic matter and it also increased total extract carbon by 11 % compared to with the Min one. Furthermore, on the Org-B treatment the stabilised organic matter (fulvic and humic acids) increased by 3.3% versus the F0 treatment. The on-farming compost applications enhanced the total N and available P by 18.8% and 51.4% compared to unfertilized control. These results suggest that organic amendments in the agro-ecosystems of Southern Italy could support soil fertility, with the possibility to reduce the risks of soil degradation and desertification. Source

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