Farklı potasyum gübre formları ve oranlarının brokoli bitkisinin kadmiyum alımı üzerine etkileri

Faruk Özkutlu

doi:10.29278/azd.712566

Farklı potasyum gübre formları ve oranlarının brokoli bitkisinin kadmiyum alımı üzerine etkileri

Öz

Kadmiyum, yüksek konsantrasyonlarda bulunduğunda bitki, hayvan ve insanlara toksik etkisi olan bir elementtir. Toprak ve bitkilerde kadmiyumun (Cd) birikiminin olması nedeniyle dokularında 3 mg kg-1’dan fazla Cd içeren bitkileri düzenli olarak tüketen insanlarda Cd’un toksik etkileri görülmektedir. Bu nedenle, dünya genelinde topraklarda ve bitkilerde Cd’un birikiminin boyutları ve bitkilerde birikiminin azaltılmasına yönelik araştırmalar hızla artmaktadır. Bu araştırma, sera koşullarında brokoli (Brassica oleracea italica) bitkisine farklı potasyumlu (KCl, K2SO4 ve KNO3) gübrelerin 4 farklı dozda (0, 200, 600 ve 1800 mg kg-1) uygulanmasıyla bitkinin Cd alımı üzerine etkisi belirlenmiştir. Potasyumun Cl-, NO3- ve SO4-2 formlarında ve (0, 200, 600 ve 1800 mg kg-1) uygulandığı dozlarda yeşil aksama Cd taşınması tüm dozlarda kontrole göre artmıştır. Artan dozlarda KCl uygulanmalarının tamamında K’un NO3- ve SO4-2 formlarına göre kontrole göre kuru madde verimini azaltırken yeşil aksam Cd alımını arttırmıştır. Kadmiyumun 2.5 mg kg-1 ve K’un 1800 mg kg-1 Cl-, NO3- ve SO4-2 formları uygulandığında, kuru madde verimleri 2.3, 2.41, 2.36 g bitki-1 olduğu ve yeşil aksam Cd alımlarının ise sırasıyla 23.9, 18.4 ve 17.9 mg kg-1 olduğu saptanmıştır. Bu araştırmada, Cl- anyonunun NO3- ve SO4-2 anyonlarına göre brokoli (Brassica oleracea italica) bitkisinin yeşil aksamında Cd alımının daha fazla olması muhtemelen Cd-Cl kompleksinin Cd absorbsiyonuna katıldığını göstermektedir. Bu sonucunda da topraklarda Cd+2 'nın biyoyararlığını artırmaktadır. Sonuç olarak, Cd kontamine olmuş topraklara potasyumlu gübre uygularken formların ve oranların dikkate alınması gerekliği belirlenmiştir.

Anahtar Kelimeler

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Details

Primary Language

Turkish

Subjects

Agricultural, Veterinary and Food Sciences

Journal Section

Research Article

Authors

Faruk Özkutlu ^*
0000-0002-8651-3346
Türkiye

Publication Date

June 30, 2020

Submission Date

April 1, 2020

Acceptance Date

June 5, 2020

Published in Issue

Year 2020 Volume: 9 Number: 1

DOI

https://doi.org/10.29278/azd.712566

IZ

https://izlik.org/JA83KA62JL

Cite

RIS / Bibtex

APA

Özkutlu, F. (2020). Farklı potasyum gübre formları ve oranlarının brokoli bitkisinin kadmiyum alımı üzerine etkileri. Akademik Ziraat Dergisi, 9(1), 137-144. https://doi.org/10.29278/azd.712566

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