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The Influence of Biostimulants on Tomato Plants Cultivated under Hydroponic Systems

Mostafa M. Abdelkader
Mostafa M. Abdelkader
, 
Magomed S. Gaplaev
Magomed S. Gaplaev
, 
Aslambek A. Terekbaev
Aslambek A. Terekbaev
 und 
Mikhail Y. Puchkov
Mikhail Y. Puchkov
   | 28. Okt. 2021
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Online veröffentlicht: 28. Okt. 2021
Seitenbereich: 107 - 116
Eingereicht: 01. Dez. 2020
Akzeptiert: 01. Juli 2021
DOI: https://doi.org/10.2478/johr-2021-0012
Schlüsselwörter
© 2021 Mostafa M. Abdelkader et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

Root length at transplanting (35 days after seeding) of tomato seedlings hybrid cultivar ‘Merlice’, influenced by seeds soaking in biostimulants Radifarm and RutfarmMaxifol. The different letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD
Root length at transplanting (35 days after seeding) of tomato seedlings hybrid cultivar ‘Merlice’, influenced by seeds soaking in biostimulants Radifarm and RutfarmMaxifol. The different letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD

Figure 2

Relative growth rate (A1, A2), crop growth rate (B1, B2), and net assimilation rate (C1, C2) of tomato hybrid cultivar ‘Merlice’, influenced by biostimulators – Radifarm: RF 2.5, RF 5.0, and RF 7.5; RutfarmMaxifol: SW 2.5, SW 5.0, and SW 7.5 + control (nontreated) under hydroponic system
Relative growth rate (A1, A2), crop growth rate (B1, B2), and net assimilation rate (C1, C2) of tomato hybrid cultivar ‘Merlice’, influenced by biostimulators – Radifarm: RF 2.5, RF 5.0, and RF 7.5; RutfarmMaxifol: SW 2.5, SW 5.0, and SW 7.5 + control (nontreated) under hydroponic system

Figure 3

Yield components: number of fruits per plant (A), fruit weight (B), fruit yield (kg per plant) (C) of hybrid cultivar ‘Merlice’, influenced by biostimulants under hydroponic system. The different lower case letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD
Yield components: number of fruits per plant (A), fruit weight (B), fruit yield (kg per plant) (C) of hybrid cultivar ‘Merlice’, influenced by biostimulants under hydroponic system. The different lower case letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD

Figure 4

Biochemical parameters: dry matter (A), total soluble solid (B), ascorbic acid (C), carotenoid contents (D), acidity (E), and nitrate contents in tomato fruits hybrid cultivar ‘Merlice’ (F), influenced by biostimulants under hydroponic system. The different lower case letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD
Biochemical parameters: dry matter (A), total soluble solid (B), ascorbic acid (C), carotenoid contents (D), acidity (E), and nitrate contents in tomato fruits hybrid cultivar ‘Merlice’ (F), influenced by biostimulants under hydroponic system. The different lower case letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD

Figure 5

Maturity degree (A) and taste index of tomato fruits hybrid cultivar ‘Merlice’ (B), applied with two biostimulants under hydroponic system. The different lower case letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD
Maturity degree (A) and taste index of tomato fruits hybrid cultivar ‘Merlice’ (B), applied with two biostimulants under hydroponic system. The different lower case letters indicate significant differences between the treatments at p < 0.05 established by Tukey’s multiple range test; values represent means ± SD

Biometric parameters of tomato plants under the influence of biostimulators (mg·L−1) under hydroponic system

Biometric parameters Days after planting Control RF 2.5 RF 5.0 RF 7.5 RM 2.5 RM 5.0 RM 7.5
Plant height (cm) 35 17.9 ± 2.0 d 18.0 ± 1.7 d 21.2 ± 2.1 ab 21.5 ± 2.3 a 20.1 ± 2.1 c 20.9 ± 1.3 b 21.0 ± 1.4 b
70 143.5 ± 5.8 b 146.5 ± 6.6 b 171.5 ± 7.3 a 178.0 ± 7.0 a 159.2 ± 7.3 ab 171.0 ± 5.6 a 174.0 ± 6.1 a
105 174.5 ± 7.9 d 180.0 ± 8.6 d 193.5 ± 9.0 c 197.5 ± 10.7 bc 198.5 ± 10.3 bc 206.5 ± 9.4 b 217.0 ± 9.3 a
Number of leaves 35 6.5 ± 0.28 c 6.8 ± 0.68 bc 7.2 ± 0.74 ab 7.2 ± 0.35 ab 6.8 ± 0.67 bc 7.3 ± 0.71 ab 7.5 ± 0.80 a
70 32.1 ± 2.1 d 37.1 ± 1.9 bc 39.1 ± 2.6 ab 40.6 ± 2.4 a 35.9 ± 1.9 c 37.6 ± 1.6 bc 39.0 ± 2.2 ab
105 43.6 ± 2.8 c 50.0 ± 2.2 bc 52.4 ± 2.4 ab 53.9 ± 2.2 a 48.4 ± 2.2 c 50.5 ± 1.8 bc 52.0 ± 2.7 ab
Plant fresh weight (g) 35 9.7 ± 1.0 d 9.9 ± 0.9 d 10.7 ± 1.1 c 11.7 ± 1.2 b 10.5 ± 1.0 c 12.4 ± 1.2 ab 13.0 ± 1.3 a
70 150.7 ± 7.3 c 151.1 ± 8.4 c 152.8 ± 6.6 bc 154.7 ± 7.9 b 154.2 ± 7.0 bc 158.9 ± 8.7 a 161 ± 7.2 a
105 201.4 ± 10.8 c 216.1 ± 11.1 bc 230.2 ± 12.8 b 238.7 ± 12.2 ab 204.0 ± 12.0 c 249.7 ± 16.9 a 251.0 ± 14.3 a
Plant dry weight (g) 35 2.4 ± 0.1 e 2.6 ± 0.3 de 2.7 ± 0.2 cd 2.8 ± 0.1 cd 2.8 ± 0.2 bc 3.1± 0.1 ab 3.3 ± 0.2 a
70 19.1 ± 2.1 d 22.1 ± 2.2 c 28.8 ± 2.6 b 30.4 ± 2.7 ab 24.2 ± 2.4 c 30.9 ± 3.0 ab 32.0 ± 1.8 a
105 46.5 ± 2.7 d 55.1 ± 3.0 c 58.9 ± 2.3 b 60.3 ± 3.5 b 58.9 ± 3.3 b 73.3 ± 4.0 a 75.0 ± 4.2 a
Total leaf area per plant (dm2) 35 0.47 ± 0.01 c 0.55 ± 0.01 bc 0.59 ± 0.1 b 0.60 ± 0.02 b 0.59 ± 0.01 b 0.73± 0.02 a 0.75 ± 0.02 a
70 21.2 ± 0.68 b 23.4 ± 0.67 a 24.1 ± 0.89 a 23.8 ± 0.80 a 23.4 ± 0.75 a 23.8 ± 0.73 a 23.6 ± 0.80 a
105 33.2 ± 1.6 ab 33.6 ± 1.3 a 34.0 ± 1.8 a 33.9 ± 1.9 a 32.8 ± 1.7 b 33.4 ± 1.8 a 34.1 ± 1.5 a
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