Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes)

Işın Kocabaş Oğuz; Songül Çetin Torun

doi:10.16882/hortis.2009584

Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes)

Abstract

Potassium plays an important role in plant growth, assimilate transport, yield formation, and quality development in vegetable crops. Therefore, determining an appropriate potassium fertilization rate is important for improving the productivity and quality of kohlrabi. This study evaluated the effects of different potassium rates on the growth, yield, and quality characteristics of the Korist F₁ kohlrabi cultivar grown under unheated greenhouse conditions during the autumn–winter growing season in Korkuteli, Antalya, Türkiye. The experiment was established according to randomized complete block design with four potassium levels (Control, 100, 200, and 300 kg ha^-1 K₂O) and four replications. Plant fresh weight, leaf number, and leaf fresh weight in kohlrabi increased substantially with potassium application compared to the control. The treatments of 200 and 300 kg ha^-1 K₂O produced the largest total plant fresh yields, totaling 57.60 and 61.42 t ha^-1, respectively. The greatest increase in tuber fresh yield was obtained with the 300 kg ha^-1 K₂O treatment, with a value of 31.91 t ha^-1, followed by the 200 kg ha^-1 K₂O treatment, which resulted in a tuber fresh yield of 28.52 t ha^-1. The 200 kg ha^-1 K₂O treatment demonstrated a beneficial impact on quality indicators, yielding the highest values for electrical conductivity (EC) and soluble solids content. Potassium fertilization significantly enhanced growth, production, and quality characteristics in kohlrabi, with 200–300 kg ha^-1 K₂O being optimal for yield, whereas 200 kg ha^-1 K₂O was more advantageous for quality attributes.

Keywords

References

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Details

Primary Language

English

Subjects

Horticultural Production (Other)

Journal Section

Research Article

Authors

Işın Kocabaş Oğuz ^*
Türkiye

Songül Çetin Torun
Türkiye

Publication Date

August 14, 2026

Submission Date

June 15, 2026

Acceptance Date

August 7, 2026

Published in Issue

Year 2026 Volume: 43 Number: 2

DOI

https://doi.org/10.16882/hortis.2009584

IZ

https://izlik.org/JA99GR23AW

Cite

RIS / Bibtex

APA

Kocabaş Oğuz, I., & Çetin Torun, S. (2026). Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes). Horticultural Studies, 43(2), 67-73. https://doi.org/10.16882/hortis.2009584

AMA

1.Kocabaş Oğuz I, Çetin Torun S. Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes). HortiS. 2026;43(2):67-73. doi:10.16882/hortis.2009584

Chicago

Kocabaş Oğuz, Işın, and Songül Çetin Torun. 2026. “Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica Oleracea Var. Gongylodes)”. Horticultural Studies 43 (2): 67-73. https://doi.org/10.16882/hortis.2009584.

EndNote

Kocabaş Oğuz I, Çetin Torun S (August 1, 2026) Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes). Horticultural Studies 43 2 67–73.

IEEE

[1]I. Kocabaş Oğuz and S. Çetin Torun, “Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes)”, HortiS, vol. 43, no. 2, pp. 67–73, Aug. 2026, doi: 10.16882/hortis.2009584.

ISNAD

Kocabaş Oğuz, Işın - Çetin Torun, Songül. “Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica Oleracea Var. Gongylodes)”. Horticultural Studies 43/2 (August 1, 2026): 67-73. https://doi.org/10.16882/hortis.2009584.

JAMA

1.Kocabaş Oğuz I, Çetin Torun S. Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes). HortiS. 2026;43:67–73.

MLA

Kocabaş Oğuz, Işın, and Songül Çetin Torun. “Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica Oleracea Var. Gongylodes)”. Horticultural Studies, vol. 43, no. 2, Aug. 2026, pp. 67-73, doi:10.16882/hortis.2009584.

Vancouver

1.Işın Kocabaş Oğuz, Songül Çetin Torun. Effects of Potassium Applications on Growth, Tuber Yield, and Quality Parameters of Kohlrabi (Brassica oleracea var. gongylodes). HortiS. 2026 Aug. 1;43(2):67-73. doi:10.16882/hortis.2009584