Potassium pools equilibration during growth stages of two rapeseed cultivars under drought stress

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

Baladi r.; BIJANZADEH E.; NAJAFI GHIRI M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Iran Agricultural Research Year:2018 | Volume:37 | Issue:1 Page(s): 1-10

Download Full-Text

Persian Verion

View:

370

Download:

111

Cites:

Information Journal Paper

Title

Potassium pools equilibration during growth stages of two rapeseed cultivars under drought stress

Author(s)

Baladi r. | BIJANZADEH E. | NAJAFI GHIRI M. | Issue Writer Certificate

Keywords

Potassium formsQ1

Flowering stageQ2

RapeseedQ2

Soil depthQ2

DroughtQ2

Abstract

Different soil potassium (K) pools including soluble, exchangeable and non-exchangeable in surface and subsurface soils may be totally used by canola roots at different growth stages under Drought conditions. A field experiment was conducted for one growing season (2013-2014) to study K pools changes during growth stages of two Rapeseed cultivars under Drought. The experiment was arranged in a randomized complete block design with four factors including different stages of Rapeseed growth (before planting, seedling, stem elongation, flowering, grain filling and harvesting), Drought (full irrigation, Drought from flowering and silique formation), Rapeseed cultivars (Sarigol and RGS) and Soil depths (0-15 and 15-30 cm). Soil samples were collected and soluble, exchangeable and non-exchangeable K were determined. Results showed that the contents of soluble and non-exchangeable K (NEK) decreased during the growth stages (22 and 198 mg kg-1, respectively) while the contents of exchangeable K increased until stem elongation (57 mg kg-1) and then remained constant. Decrease in the contents of HNO3-extractable K (sum of soluble, exchangeable and non-exchangeable K) in the topsoils was significantly more than that in the subsoils (198 vs. 142 mg kg-1). Drought also had a significant effect on K pools distribution. Drought from flowering decreased the contents of NEK and HNO3-extractable K; however, Drought from silique formation had no significant effect on the contents of the different K forms. Type of Rapeseed cultivar had no significant effect on K pools distribution. It is concluded that a severe decrease in HNO3-extractable K occurs at the Flowering stage (170 mg kg-1) and it must be considered for K fertilizers management. Decrease in NEK during the Rapeseed growth supports the hypothesis that this form of K may be released during a growth season and this large pool of K may be considered in K fertility management and fertilizer recommendations. Generally, K uptake by Sarigol cultivar was significantly higher than that by RGS cultivar (177. 7 vs. 129. 4 kg ha-1). Potassium uptake by Rapeseed decreased by Drought and this decrease was more pronounced by Drought from silique formation (more than 40% decrease in K uptake).

Cites

No record.

References

No record.

Cite

APA: Copy

Baladi, r., BIJANZADEH, E., & NAJAFI GHIRI, M.. (2018). Potassium pools equilibration during growth stages of two rapeseed cultivars under drought stress. IRAN AGRICULTURAL RESEARCH, 37(1 ), 1-10. SID. https://sid.ir/paper/365670/en

Vancouver: Copy

Baladi r., BIJANZADEH E., NAJAFI GHIRI M.. Potassium pools equilibration during growth stages of two rapeseed cultivars under drought stress. IRAN AGRICULTURAL RESEARCH[Internet]. 2018;37(1 ):1-10. Available from: https://sid.ir/paper/365670/en

IEEE: Copy

r. Baladi, E. BIJANZADEH, and M. NAJAFI GHIRI, “Potassium pools equilibration during growth stages of two rapeseed cultivars under drought stress,” IRAN AGRICULTURAL RESEARCH, vol. 37, no. 1 , pp. 1–10, 2018, [Online]. Available: https://sid.ir/paper/365670/en

Related Journal Papers