Plant Soil Environ., 2017, 63(3):105-110 | DOI: 10.17221/678/2016-PSE

Fertilizer type influences tomato yield and soil N2O emissionsOriginal Paper

Luca VITALE*,1, Franca POLIMENO2, Lucia OTTAIANO3, Giuseppe MAGLIONE2, Anna TEDESCHI1, Mauro MORI3, Anna De Marco4, Paul Di TOMMASI1, Vincenzo MAGLIULO1
1 National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Agricultural and Forestry Systems in the Mediterranean, Ercolano, Italy
2 National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Animal Production System in Mediterranean Environment, Naples, Italy
3 University of Naples Federico II, Department of Agronomy, Portici, Italy
4 University of Naples Federico II, Department of Biology, Naples, Italy

Improvements in crop management for a more sustainable agriculture are fundamental to reduce environmental impacts of cropland and to mitigate effects on global climate change. In this study three fertilization types - ammonium nitrate (control); mineral fertilizer added with a nitrification inhibitor (3,4-dimethylpyrazole phosphate (DMPP)), and an organo-mineral fertilizer (OM) - were tested on a tomato crop in order to evaluate effects both on crop production and soil N2O emissions. Plants grown under OM fertilization had a greater relative growth rate compared to mineral fertilization, due to a higher net assimilation rate, which was related to a greater light interception rather than to a higher photosynthetic efficiency. OM fertilization determined the highest fruit production and lower soil N2O fluxes compared to NH4NO3, although the lowest soil N2O fluxes were found in response to mineral fertilizer added with a nitrification inhibitor. It can be concluded that organo-mineral fertilizer is a better nutrient source compared to mineral fertilizers able to improve crop yield and to mitigate soil N2O emission.

Keywords: plant growth; nitrous oxide; emission factor; Mediterranean climate

Published: March 31, 2017  Show citation

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VITALE L, POLIMENO F, OTTAIANO L, MAGLIONE G, TEDESCHI A, MORI M, et al.. Fertilizer type influences tomato yield and soil N2O emissions. Plant Soil Environ. 2017;63(3):105-110. doi: 10.17221/678/2016-PSE.
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