Water regime affects soil N2O emission and tomato yield grown under different types of fertilisers

  • Luca Vitale | luca.vitale@cnr.it National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Agricultural and Forestry Systems in the Mediterranean, Ercolano (NA), Italy.
  • Anna Tedeschi National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Agricultural and Forestry Systems in the Mediterranean, Ercolano (NA), Italy.
  • Franca Polimeno National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Animal Production System in Mediterranean Environment, Naples, Italy.
  • Lucia Ottaiano Department of Agronomy, University of Naples Federico II, Portici (NA), Italy.
  • Giuseppe Maglione National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Animal Production System in Mediterranean Environment, Naples, Italy.
  • Carmen Arena Department of Biology, University of Naples Federico II, Naples, Italy.
  • Anna De Marco Department of Biology, University of Naples Federico II, Naples, Italy.
  • Vincenzo Magliulo National Research Council, Department of Biology, Agriculture and Food Sciences, Institute for Agricultural and Forestry Systems in the Mediterranean, Ercolano (NA), Italy.

Abstract

Tomato plants were subjected to three fertilisation treatments (M: mineral fertiliser; DMPP: mineral fertiliser + 3,4- dimethylpyrazole phosphate; OM: NKP + organic animal manure) in combination with two water regimes (100% and 50% evapotranspiration). Plant biomass, fruit production, nitrogen use efficiency (NUE) and N uptake, maximal PSII photochemical efficiency, Fv/Fm and cumulative soil N2O emission were determined. Well-watered OM plants showed higher values of biomass, fruit production, NUE and N uptake than M and DMPP plants; cumulative N2O fluxes were lower in DMPP plots than in M and OM plots. The reduced water supply determined a drop in crop biomass, fruit production, NUE and N uptake, and cumulative N2O fluxes in M and OM treatments that were higher in OM plots, whereas it determined a significant rise in cumulative N2O fluxes in DMPP plots that was lower in absolute term compared to M and OM plots recorded under well-water irrigation. It can be concluded that DMPP added-fertiliser has a good performance in semiarid environment resulting a better nitrogen source compared to conventional and organo-mineral fertilisers under reduced water supply, able to preserve crop yield and to determine soil N2O emissions (as expressed in CO2 eq) not dangerous for global environment.

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Published
2017-10-30
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Original Articles
Keywords:
Fertiliser, plant growth, water regime, N2O emission, global environment, tomato.
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How to Cite
Vitale, L., Tedeschi, A., Polimeno, F., Ottaiano, L., Maglione, G., Arena, C., De Marco, A., & Magliulo, V. (2017). Water regime affects soil N2O emission and tomato yield grown under different types of fertilisers. Italian Journal of Agronomy, 13(1), 74-79. https://doi.org/10.4081/ija.2017.989