Effect of Nutrient Solution Cooling in Summer and Heating in Winter on the Performance of Baby Leafy Vegetables in Deep-Water Hydroponic Systems
Abstract
:1. Introduction
2. Materials and Methods
2.1. Nutrient Solution Cooling during Summer Season
2.1.1. Plant Materials and Culture
2.1.2. Experimental Design and Treatments
2.1.3. Data Collection
2.2. Nutrient Solution Heating during Winter
2.2.1. Plant Materials and Culture
2.2.2. Experimental Design and Treatments
2.2.3. Data Collection
2.3. Statistical Analysis
3. Results
3.1. Effect of Nutrient Solution Cooling
3.1.1. Plant Growth
3.1.2. Stress Evaluation
3.2. Effect of Nutrient Solution Heating
3.2.1. Plant Biomass
3.2.2. Leaf Traits
3.2.3. Stress Evaluation
4. Discussion
4.1. Root-Zone Temperature Control Has the Potential to Increase Crop Yield
4.2. Responses to Root-Zone Temperature Control Vary with Plant Genotype
4.3. Effect of Air Temperature
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Conflicts of Interest
References
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Expt. | DLI * (mol m−2 d−1) | Air Temp. (°C) | Solution Temp. (°C) | Solution pH | Solution EC (mS cm−1) | Solution DO (mg L−1) | ||||
---|---|---|---|---|---|---|---|---|---|---|
Control | Treat. | Control | Treat. | Control | Treat. | Control | Treat. | |||
Nutrient solution cooling | ||||||||||
Expt. 1 | 14.1 | 27.7 | 30.2 | 23.3 | 6.7 | 6.7 | 1.7 | 1.7 | 6.7 | 7.5 |
Expt. 2 | 12.2 | 26.8 | 29.1 | 22.9 | 6.3 | 6.3 | 1.6 | 1.6 | 6.8 | 7.7 |
Nutrient solution heating | ||||||||||
Expt. 1 | 12.7 | 14.3 | 15.7 | 22.0 | 6.2 | 6.3 | 2.0 | 2.1 | 7.9 | 7.0 |
Expt. 2 | 19.9 | 18.1 | 19.7 | 22.4 | 6.7 | 6.8 | 2.0 | 2.1 | 8.4 | 7.6 |
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Hooks, T.; Sun, L.; Kong, Y.; Masabni, J.; Niu, G. Effect of Nutrient Solution Cooling in Summer and Heating in Winter on the Performance of Baby Leafy Vegetables in Deep-Water Hydroponic Systems. Horticulturae 2022, 8, 749. https://doi.org/10.3390/horticulturae8080749
Hooks T, Sun L, Kong Y, Masabni J, Niu G. Effect of Nutrient Solution Cooling in Summer and Heating in Winter on the Performance of Baby Leafy Vegetables in Deep-Water Hydroponic Systems. Horticulturae. 2022; 8(8):749. https://doi.org/10.3390/horticulturae8080749
Chicago/Turabian StyleHooks, Triston, Ling Sun, Yun Kong, Joseph Masabni, and Genhua Niu. 2022. "Effect of Nutrient Solution Cooling in Summer and Heating in Winter on the Performance of Baby Leafy Vegetables in Deep-Water Hydroponic Systems" Horticulturae 8, no. 8: 749. https://doi.org/10.3390/horticulturae8080749