Durum Wheat–Potato Crop Rotation, Soil Tillage, and Fertilization Source Affect Soil CO<sub>2</sub> Emission and C Storage in the Mediterranean Environment
2023
Roberto Mancinelli | Sara Marinari | Mariam Atait | Verdiana Petroselli | Gabriele Chilosi | Merima Jasarevic | Alessia Catalani | Zainul Abideen | Morad Mirzaei | Mohamed Allam | Emanuele Radicetti
At present, the role of agricultural practices on the dynamic of GHGs is being investigated worldwide. In this study, the effects of soil tillage practices (conventional vs. conservation techniques) and fertilization sources (inorganic vs. organic) on soil CO<sub>2</sub> emissions in durum wheat (<i>Triticum durum</i> Desf.)–potato (<i>Solanum tuberosum</i> L.) rotation in the Mediterranean area were evaluated. This study aimed to understand the changes in the soil carbon content and the soil CO<sub>2</sub> emissions under different soil tillage practices (moldboard plow (P), subsoiler (R), and spading machine (S)) and fertilization sources (mineral (M) and organic (O) with municipal organic waste). Soil CO<sub>2</sub> flux, soil water content, and soil temperature data were collected for both crops using a portable closed-chamber infrared gas dynamics system. Significant relationships were detected between soil CO<sub>2</sub> emissions and soil temperate and soil water content. However, these relationships were found only for durum wheat crops. Our findings indicate that including sustainable agricultural practices in wheat–potato rotation system could act as an appropriate alternative option to increase soil organic carbon, mitigate CO<sub>2</sub> emissions, and reduce the dependence on chemical inputs and energy.
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