Tomato plants were subjected to three fertilization treatments (M: mineral fertilizer; DMPP: mineral fertilizer + 3,4-dimethylpyrazole phosphate; OM: NKP + organic animal manure) in combination with two water regimes (100% and 50% Evapotranspiration, ET). 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 significant rise in cumulative N2O fluxes in DMPP plots. It can be concluded that DMPP added-fertilizer has a good performance in semi-arid environment resulting a better N source compared to conventional and organo-mineral fertilizers under reduced water supply, able to preserve crop yield and to determine soil N2O emissions not dangerous for global environment.
Water regime affects soil N2O emission and tomato yield grown under different types of fertilizers / Vitale, L.; Tedeschi, A.; Polimeno, F.; Ottaiano, L.; Maglione, G.; Arena, C.; De Marco, A.; Magliulo, V.. - In: ITALIAN JOURNAL OF AGRONOMY. - ISSN 2039-6805. - 11:(2018), pp. 1-17. [10.4081/ija.2017.989]
Water regime affects soil N2O emission and tomato yield grown under different types of fertilizers
Arena C.;De Marco A.;
2018
Abstract
Tomato plants were subjected to three fertilization treatments (M: mineral fertilizer; DMPP: mineral fertilizer + 3,4-dimethylpyrazole phosphate; OM: NKP + organic animal manure) in combination with two water regimes (100% and 50% Evapotranspiration, ET). 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 significant rise in cumulative N2O fluxes in DMPP plots. It can be concluded that DMPP added-fertilizer has a good performance in semi-arid environment resulting a better N source compared to conventional and organo-mineral fertilizers under reduced water supply, able to preserve crop yield and to determine soil N2O emissions not dangerous for global environment.File | Dimensione | Formato | |
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