Soil CO 2 and N 2 O Emission Drivers in a Vineyard ( Vitis vinifera ) under Different Soil Management Systems and Amendments

Ágota Horel, Eszter Tóth, Györgyi Gelybó, Márton Dencső and Imre Potyó
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Ágota Horel: Institute of Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. St. 15, Budapest 1022, Hungary
Eszter Tóth: Institute of Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. St. 15, Budapest 1022, Hungary
Györgyi Gelybó: Institute of Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. St. 15, Budapest 1022, Hungary
Márton Dencső: Institute of Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. St. 15, Budapest 1022, Hungary
Imre Potyó: Institute of Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. St. 15, Budapest 1022, Hungary

Sustainability, 2018, vol. 10, issue 6, 1-15

Abstract: Greenhouse gases emitted from agricultural soils entering the atmosphere must be reduced to decrease negative impacts on the environment. As soil management can have an influence on greenhouse gas emissions, we investigated the effects of different soil management systems and enhancer materials on CO 2 and N 2 O fluxes in a vineyard. Five treatments were investigated: (i) no-till management with no fertilizer addition as the control (C); (ii) tilled soil (shallow) with no fertilizer (T); (iii) tilled soil, no fertilizer, and biochar application (T + BC); (iv) tilled soil and manure addition (T + M); and (v) tilled soil, manure, and biochar application (T + M + BC). T treatment showed the highest overall N 2 O emission, while the lowest was observed in the case of T + M + BC, while manure and biochar addition decreased. Tillage in general increased overall CO 2 emissions in all treatments (T 26.7% and T + BC 30.0% higher CO 2 than C), while manure addition resulted in reduced soil respiration values (T + M 23.0% and T + M + BC 24.8% lower CO 2 than T). There were no strong correlations between temperatures or soil water contents and N 2 O emissions, while in terms of CO 2 emissions, weak to moderately strong connections were observed with environmental drivers.

Keywords: greenhouse gases; tillage; fertilizer; organic manure; biochar; soil moisture; soil temperature (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
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