Bu
çalışmada, kurak koşullarda yetiştirilen buğdayda geç evrede verilen ikinci üst
gübre azotunun, bitkiye erken evrede amonyum ve üre formunda verilerek, azotun
2:1 tipi kil mineralleri tarafından fiksasyonu ile kurak dönemde bitkinin azot
ihtiyacının toprakta fikse edilen amonyum formundaki azotun serbestlenmesi ile
karşılanması amaçlanmıştır. Araştırma sonucunda, üre ve amonyum formunda tek
sefer azot uygulamasındaki tane veriminin, iki evrede verilen amonyum nitrat
uygulamasından daha yüksek olduğu, bin dane ağırlığının amonyum sülfat uygulamasında
en yüksek, amonyum nitrat uygulamasında en düşük olduğu bulunmuştur. Sonuç
olarak, azotlu gübrelerin kurak alanlarda smektit ve vermikülitce baskın
topraklarda, erken dönemde tek seferde üre veya amonyum formunda toprağa
verilmesinin, iki defada amonyum nitrat azotu formunda verilmesinden daha
etkili olduğu görülmüştür.
In this study, it was
proposed that nitrogen demands of rainfed wheat plants may be met by the
release of ammonium fixed in 2:1 clay minerals.
In order to do that single top dressing of nitrogen given in the forms
of urea or ammonium in the early stage of plant growth and two split
applications of N as ammonium-nitrate were compared in rain-fed wheat plants.
As a result of the study, grain yields obtained from single applications of
urea and ammonium were found to be higher than two split applications of
ammonium nitrate. Thousand-grain weight was found to be the highest with the
ammonium sulfate application and the lowest with the ammonium nitrate
application. It was seen that applying nitrogen fertilizers to the soil which
is dominant with expanding smectite and vermiculate clay minerals in the forms
of urea and ammonium at once in the early stage is more effective than two
split applications as ammonium nitrate.
Primary Language | Turkish |
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Journal Section | RESEARCH ARTICLE |
Authors | |
Publication Date | April 30, 2019 |
Submission Date | October 24, 2018 |
Acceptance Date | January 15, 2019 |
Published in Issue | Year 2019Volume: 22 Issue: 2 |
International Peer Reviewed Journal
Free submission and publication
Published 6 times a year
KSU Journal of Agriculture and Nature
e-ISSN: 2619-9149