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001-es BibID:BIBFORM079261
Első szerző:Széles Adrienn (okleveles agrármérnök)
Cím:The impact of environmental factors on the protein content and yield of maize grain at different nutrient supply levels / Adrienn Széles, Éva Horváth, Attila Vad, Endre Harsányi
Dátum:2018
ISSN:2079-052X 2079-0538
Megjegyzések:Climate change poses a new challenge for maize producers which calls for the re-thinking of each production technological element. Professional nutrient replenishment may represent an alternative for the mitigation of yield decrease caused by climate change by means of improving yield stability from the aspect of global food safety, as well as increasing yield and improving yield quality. In the course of a six-year (2011-2016) research, under changing climatic conditions we studied how different fertilization methods - 11 different N doses (0-300 kg ha-1) - affect the productivity of maize and protein content of grains.The experiment was carried out in Hungary (47 degrees 33' N, 21 degrees 26' E, asl: 111 m) in the long-term experiment of the University of Debrecen.The results of the examined years classified on the basis of precipitation, effective heat units (HU) and potential evapotranspiration (PET) showed a significant yield limitation effect of precipitation shortage. In drought, maize yield decreased by 16% (P<0.001) in comparison with the average crop year. The wet crop year resulted in a 19% yield increase (P < 0.001). Protein content was lower (-11.7%) in the dry and warm crop year than in the wet crop year. The maize grain content is in a close positive correlation with yield at a high level of confidence in all examined years (P<0.001). The closest correlation was observed in the dry crop years (2012 r=0.703; 2013 0.728; 2015 0.747). As a summary of the performed research, precipitation improved the availability of nutrients. The economical yield level can be achieved with lower NPK ha(-1) nutrient doses of 120:92:108 kg in wet crop years. In dry crop years, the harmful effect of climate change can be mitigated and yield safety can be improved with higher nutrient replenishment. Higher protein content results from the treatment combinations with higher N and P needs and proper nutrient proportions.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Fertilisation
Quality
Weather stress
Yield response
Zea mays L.
Megjelenés:Emirates Journal of Food and Agriculture. - 30 : 9 (2018), p. 764-777. -
További szerzők:Horváth Éva (1993-) (környezetgazdálkodási agrármérnök) Vad Attila (1981-) (agrármérnök) Harsányi Endre (1976-) (agrármérnök)
Pályázati támogatás:GINOP-2.2.1-15-2016-00001
GINOP
EFOP-3.6.3-VEKOP-16-2017-00008
EFOP
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