Environmental Consequences of Efficient Use of Nitrogen Fertilizers
| dc.contributor.author | Ciobanu, Gheorghe | |
| dc.contributor.author | Ciobanu, Cornelia | |
| dc.contributor.author | Domuta, Cornel | |
| dc.contributor.author | Csep, Nicolae | |
| dc.contributor.author | Burescu, Petru | |
| dc.date.accessioned | 2021-06-28T11:01:12Z | |
| dc.date.available | 2021-06-28T11:01:12Z | |
| dc.date.issued | 2002-05-12 | |
| dc.description.abstract | Nitrogen fertilizer represents major economic burden. For this reason, although the efficiency of nitrogen utilization varies highly, its actual use generally remains at low levels; these averaging between 25 and 50%. We set up an experiment at the Oradea Research Station, using 15N labeled fertilizers, in order to investigate the possibility of increasing N fertilizer efficiency in winter wheat under irrigation conditions. Fertilizers labeled with 15N allows us to individually determine its effect on yield formation, as well as the use efficiency of N from fertilizer following application rate and time. The amount of N derived from fertilizer as determined in straw and grain yield is high. When the labeled fertilizer is applied at tillering time, the values of this indicator rise when higher N levels we applied. In separate experiments, we investigated a series of aspects connected to chemical fertilizer regarding the determination of the type of fertilizer, optimum time and rates of application; all these as a function of the special pedoclimatic conditions. The results obtained in the field show that the effectiveness of N utilization in wheat is most variable and generally low, often ranging between 25 and 33%, owing to N loss within the system through leaching and NH3 volatilization. A readily achievable increase in efficiency of 5 percentage points would result in considerable savings, and can be brought about by reducing nitrogen losses. The added benefits to the environment in terms of reduced ground/water contamination and lowered nitrous oxide (N20) emissions would also be substantial. The figures for N fertilizer use efficiency (% N range from 35.5 to 72.6, the highest value being recorded with an N application of 120 kg/ha at tillering, when the previous crop was sunflower). INTRODUCTION | en |
| dc.format | application/pdf | |
| dc.identifier.citation | Acta Agraria Debreceniensis, No. 1 (2002): Special Issue - Journal of Agricultural Sciences , 41-46 | |
| dc.identifier.doi | https://doi.org/10.34101/actaagrar/1/3535 | |
| dc.identifier.issn | 2416-1640 | |
| dc.identifier.issue | 1 | |
| dc.identifier.jatitle | Acta agrar. Debr. | |
| dc.identifier.jtitle | Acta Agraria Debreceniensis | |
| dc.identifier.uri | https://hdl.handle.net/2437/316997 | en |
| dc.language | en | |
| dc.relation | https://ojs.lib.unideb.hu/actaagrar/article/view/3535 | |
| dc.rights.access | Open Access | |
| dc.title | Environmental Consequences of Efficient Use of Nitrogen Fertilizers | en |
| dc.type | folyóiratcikk | hu |
| dc.type | article | en |
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