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001-es BibID:BIBFORM100839
Első szerző:Juhász Evelin Kármen (környezetgazdálkodási agrármérnök)
Cím:Evaluating changes in nitrogen and sulphur content in a soil-plant system in a long-term fertilization experiment / Juhász Evelin Kármen, Balláné Kovács Andrea
Dátum:2020
ISSN:1587-1282
Megjegyzések:The objective of this study was to evaluate the impact of long term NPK fertilization (considering that S containing superphosphate was supplied for 26 years of experiment, but since 9 years S has not used any longer) on sulphur-and nitrogen content and N/S ratio of winter wheat. The second objective of this work was to determine the changes of the amount of the different nitrogen and sulphur fraction in chernozem soil in a long term fertilization experiment. The third aim of the work was to determine if arelationship could be established between the studied parameters.Based on our results, it can be stated that the sulphur containing superphosphatesupplied in the period of 1984?2010 has no longer significant effect on total sulphur content of plant in 2018. The NPK fertilization treatments had positive effect on total nitrogen content of winter wheat. In general, increasing NPK doses resulted in significantly higher nitrogen. The effect of irrigationapplied in previous years has no statistically significant effect on the sulphur and nitrogen content of wheat. The wheat grain produced in our experiment, especially in fertilized treatments showed S deficiency. Analysing the changes of CaCl2soluble nitrate-N and total N of the soil, it can be stated that the effect of increasing fertilizer doses clearly appearsin these parameters, because the treatment with increasing fertilizer doses resulted higher CaCl2soluble N forms compared to the control treatment in soil. These values increased until flowering stage of wheat and after that a slightly decrease was observed as a result of higher N uptake of plant. In overall, it can be stated, that the effect of superphosphate on measured sulphur fraction is prevailed. With increasing fertilizer doses higher sulphatecontent was detected in soil, but the sulphate content measured in different soil extractant is not enough for the wheat in this experiment area. Studying the correlation between the measured parameters of plant and soil, it can be concluded, that the relationships between nitrogen in the plant and in the soil is stable, and did not change during the growing season. The correlation between plant S and soil S varied in the measured periods and the r value was low in most cases. At the stage of flowering thehighest r value was found between KCl-SO4and plant S. In the stage of ripening the strongest correlation was detected between KH2PO4-SO4and grain S content.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
Megjelenés:Agrártudományi közlemények = Acta agraria Debreceniensis. - 2020 : 2 (2020), p. 77-85. -
További szerzők:Balláné Kovács Andrea (1967-) (vegyész)
Pályázati támogatás:EFOP-3.6.3-VEKOP-16-2017-00008
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