Volume 10, Issue 1 (5-2019)                   JSPI 2019, 10(1): 1-11 | Back to browse issues page

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Barzegar R, Ghasemi Ghehsareh M, Bahalo Z. The Effect of Different Concentrations of Potassium and Calcium of Nutrient Solution on Growth and Flowering of Lisianthus (Eustoma Grandiflorum (Raf.) Shiann. JSPI. 2019; 10 (1) :1-11
URL: http://jspi.iut.ac.ir/article-1-1236-en.html
Dept. of Hort. Sci., College of Agric., Shahrekord Univ., Shahrekord, Iran
Abstract:   (2828 Views)

To investigate the effects of nutrient-solution concentrations of potassium (K) and calcium (Ca), as well as different ratios of K/Ca, on growth and flowering of lisianthus (Eustoma grandiflorum) under soilless culture conditions, a factorial experiment was conducted with two factors including two K levels (300 and 400 mg/L) and three Ca levels (80, 100 and 160 mg/L). Results showed that K= 400 mg/L increased leaf number and plant height by 10% and 5% more than K= 300 mg/L, respectively. But, did not affect shoot or root’s fresh and dry weight. The highest plant height (45.6 cm) was obtained in 100 mg/L of Ca and the highest fresh root weight was observed in 160 mg/L of Ca. The effect of K×Ca interaction was significant on the number of leaves and branches. The highest number of leaves (40.3) was observed in K=400 and Ca=160 mg/L treatment. The interaction effect of Ca×K had significant effect on traits related to flowering. The highest number of flowers (16.4), number of flowering shoots (4.7) and flower diameter (49.5 mm) were observed in K=400 and Ca=100 mg/L or K=400 and Ca=80 mg/L (K/Ca ratios of 4 and 5); while, the flower longevity was the least (10.3 days). The highest flower longevity was observed with K=300 and Ca=100 mg/L. The best nutrient solution treatment for yield and durability of flowers was K=300 and Ca= 80 mg/L (K/Ca=3.7).

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Type of Study: Research |
Received: 2017/01/3 | Accepted: 2017/07/11 | Published: 2019/05/15

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