Determination to residual N effect of lentil varieties on succeeding wheat N-15 isotope tracing technique
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Date
2018
Authors
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Journal ISSN
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Publisher
Turkish Atomic Energy Authority
Abstract
N-15 izotop tekniği kullanarak, Orta Anadolu kuru koşulları altında ekilen mercimek
(Lens culinaris Medic.) bitkisinin kışlık (Pul-11 ve Kışlık Kırmızı-51) ve yazlık (Sultan-1 ve
Pul-11) çeşitlerinin biyolojik azot fiksasyon kapasitelerini tespit etmek ve sonra üzerine
ekilecek olan buğday bitkisine ne miktar azot kazandırdığını belirlemek amacıyla tarla
denemeleri kurulmuştur. Etiketli azot kullanılarak gübre ve topraktan gelen azot ile beraber
havadan biyolojik yolla fikse edilen azot miktarının ayrı ayrı belirlenmesi mümkündür. Birinci
yıl, kışlık ve yazlık mercimek çeşitlerinin biyolojik azot fiksasyon kapasiteleri N-15 metodu
kullanarak tespit edilmiştir. İkinci yıl, baklagilden sonra ekilen buğdaya taşınan bakiye azot
miktarları belirlenmiştir. Birinci yıl sonuçlarına göre, ortalama fikse edilen azot miktarları
kışlık ve yazlık çeşitler için sırasıyla 70.0 ve 45.0 kgN/ha olarak bulunmuştur. İkinci yıl,
baklagilden sonra ekilen buğdaya ortalama topraktan taşınan azot miktarları, ön bitki kışlık ve
yazlık mercimek olduğunda, sırasıyla 43.0 and 17.0 kgN/ha olarak belirlenmiştir.
The field experiments were conducted to determine nitrogen fixing capacities of winter and summer lentil (Lens culinaris Medic.) varieties and the carry-over N effect on succeeding wheat, using N-15 isotope technique, under Central Anatolia dryland conditions. The use of labelled nitrogen provides a unique tool allowing to separately study the behaviour of fertilizer N, soil N and also to quantify the amount of biologically fixed nitrogen. First year, biological nitrogen fixation capacities of winter and summer lentil varieties were estimated by using N-15 methodology. Second year, carry-over of N from the legume residue to wheat was determined. According to first year results, the average of fixed nitrogen were found as 70.0 and 45.0 kgN/ha for winter and summer varieties, respectively. Second year, the average of carry-over N derived from soil values were found 43.0 and 17.0 kgN/ha for succeeding wheat when the previous legumes were winter and summer lentil varieties, respectively.
The field experiments were conducted to determine nitrogen fixing capacities of winter and summer lentil (Lens culinaris Medic.) varieties and the carry-over N effect on succeeding wheat, using N-15 isotope technique, under Central Anatolia dryland conditions. The use of labelled nitrogen provides a unique tool allowing to separately study the behaviour of fertilizer N, soil N and also to quantify the amount of biologically fixed nitrogen. First year, biological nitrogen fixation capacities of winter and summer lentil varieties were estimated by using N-15 methodology. Second year, carry-over of N from the legume residue to wheat was determined. According to first year results, the average of fixed nitrogen were found as 70.0 and 45.0 kgN/ha for winter and summer varieties, respectively. Second year, the average of carry-over N derived from soil values were found 43.0 and 17.0 kgN/ha for succeeding wheat when the previous legumes were winter and summer lentil varieties, respectively.
Description
Keywords
N-15 Isotope Technique, N-15 İzotop Tekniği, Lentil (Lens culinaris medic.), Mercimek (Lens culinaris medic.), Biological nitrogen fixation, Biyolojik azot fiksasyonu, Carry-Over nitrogen, Baklagil azotunun diğer bitkiye taşınması
Citation
Akın, A. İ. (2018). Determination to residual N effect of lentil varieties on succeeding wheat N-15 isotope tracing technique. Turkish Journal of Nuclear Sciences, 30(1), 32-41.