The Nitrification Inhibitor Vizura® Reduces N2O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)

The agricultural area in the Po Valley is prone to high nitrous oxide (N2O) emissions as it is characterized by irrigated maize-based cropping systems, high amounts of nitrogen supplied, and elevated air temperature in summer. Here, two monitoring campaigns were carried out in...

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Main Authors:	Marcello Ermido Chiodini, Alessia Perego, Marco Carozzi, Marco Acutis
Format:	Article
Language:	English
Published:	MDPI AG 2019-08-01
Series:	Agronomy
Subjects:	N<sub>2</sub>O emissions nitrification inhibitor DMPP digestate injection maize
Online Access:	https://www.mdpi.com/2073-4395/9/8/431

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record_format	Article
spelling	doaj-98c747f0401a436a9e0a0994bab0aaa92021-04-02T14:54:29ZengMDPI AGAgronomy2073-43952019-08-019843110.3390/agronomy9080431agronomy9080431The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)Marcello Ermido Chiodini0Alessia Perego1Marco Carozzi2Marco Acutis3DiSAA, Department of Agricultural and Environmental Sciences, University of Milan, Via Celoria 2, 20133 Milan, ItalyDiSAA, Department of Agricultural and Environmental Sciences, University of Milan, Via Celoria 2, 20133 Milan, ItalyUMR EcoSys, INRA, AgroParisTech, Université Paris Saclay, route de la Ferme, 75019 Thiverval-Grignon, FranceDiSAA, Department of Agricultural and Environmental Sciences, University of Milan, Via Celoria 2, 20133 Milan, ItalyThe agricultural area in the Po Valley is prone to high nitrous oxide (N<sub>2</sub>O) emissions as it is characterized by irrigated maize-based cropping systems, high amounts of nitrogen supplied, and elevated air temperature in summer. Here, two monitoring campaigns were carried out in maize fertilized with raw digestate in a randomized block design in 2016 and 2017 to test the effectiveness of the 3, 4 DMPP inhibitor Vizura<sup>®</sup> on reducing N<sub>2</sub>O-N emissions. Digestate was injected into 0.15 m soil depth at side-dressing (2016) and before sowing (2017). Non-steady state chambers were used to collect N<sub>2</sub>O-N air samples under zero N fertilization (N0), digestate (D), and digestate + Vizura<sup>®</sup> (V). Overall, emissions were significantly higher in the D treatment than in the V treatment in both 2016 and 2017. The emission factor (EF, %) of V was two and four times lower than the EF in D in 2016 and 2017, respectively. Peaks of NO<sub>3</sub>-N generally resulted in N<sub>2</sub>O-N emissions peaks, especially during rainfall or irrigation events. The water-filled pore space (WFPS, %) did not differ between treatments and was generally below 60%, suggesting that N<sub>2</sub>O-N emissions were mainly due to nitrification rather than denitrification.https://www.mdpi.com/2073-4395/9/8/431N<sub>2</sub>O emissionsnitrification inhibitorDMPPdigestateinjectionmaize
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Marcello Ermido Chiodini Alessia Perego Marco Carozzi Marco Acutis
spellingShingle	Marcello Ermido Chiodini Alessia Perego Marco Carozzi Marco Acutis The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy) Agronomy N<sub>2</sub>O emissions nitrification inhibitor DMPP digestate injection maize
author_facet	Marcello Ermido Chiodini Alessia Perego Marco Carozzi Marco Acutis
author_sort	Marcello Ermido Chiodini
title	The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)
title_short	The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)
title_full	The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)
title_fullStr	The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)
title_full_unstemmed	The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)
title_sort	nitrification inhibitor vizura<sup>®</sup> reduces n<sub>2</sub>o emissions when added to digestate before injection under irrigated maize in the po valley (northern italy)
publisher	MDPI AG
series	Agronomy
issn	2073-4395
publishDate	2019-08-01
description	The agricultural area in the Po Valley is prone to high nitrous oxide (N<sub>2</sub>O) emissions as it is characterized by irrigated maize-based cropping systems, high amounts of nitrogen supplied, and elevated air temperature in summer. Here, two monitoring campaigns were carried out in maize fertilized with raw digestate in a randomized block design in 2016 and 2017 to test the effectiveness of the 3, 4 DMPP inhibitor Vizura<sup>®</sup> on reducing N<sub>2</sub>O-N emissions. Digestate was injected into 0.15 m soil depth at side-dressing (2016) and before sowing (2017). Non-steady state chambers were used to collect N<sub>2</sub>O-N air samples under zero N fertilization (N0), digestate (D), and digestate + Vizura<sup>®</sup> (V). Overall, emissions were significantly higher in the D treatment than in the V treatment in both 2016 and 2017. The emission factor (EF, %) of V was two and four times lower than the EF in D in 2016 and 2017, respectively. Peaks of NO<sub>3</sub>-N generally resulted in N<sub>2</sub>O-N emissions peaks, especially during rainfall or irrigation events. The water-filled pore space (WFPS, %) did not differ between treatments and was generally below 60%, suggesting that N<sub>2</sub>O-N emissions were mainly due to nitrification rather than denitrification.
topic	N<sub>2</sub>O emissions nitrification inhibitor DMPP digestate injection maize
url	https://www.mdpi.com/2073-4395/9/8/431
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The Nitrification Inhibitor Vizura<sup>®</sup> Reduces N<sub>2</sub>O Emissions When Added to Digestate before Injection under Irrigated Maize in the Po Valley (Northern Italy)

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