The Selection of Lettuce Seedlings for Transplanting in a Plant Factory by a Non-Destructive Estimation of Leaf Area and Fresh Weight
Abstract
:1. Introduction
2. Materials and Methods
2.1. Plant Materials and Seedling Production
2.2. Growth of Lettuce Crop by Seedling Classification after Transplanting
2.3. Statistical Analysis
3. Results
3.1. Differences in Lettuce Seedling Growth between Irrigation Regimes
3.2. Growth Estimation and Grading of Lettuce Seedlings Based on PCS
3.3. Lettuce Growth by Grading after Transplanting
3.4. Growth Estimation of Lettuce after Transplanting Based on PCS
4. Discussion
4.1. Changes in Lettuce Growth by Different Irrigation Regimes during the Period of Seedling Production
4.2. Prediction of Lettuce Growth Based on PCS
4.3. Yield of Lettuce after Transplanting by Seedling Grade Based on PCS
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Grade | PCS (cm2/plant) | Predicted Shoot Fresh Weight z (g/plant) |
---|---|---|
A | 5 ≤ X < 7 | 0.21 ≤ Y < 0.32 |
B | 4 ≤ X < 5 | 0.16 ≤ Y < 0.21 |
C | 2 ≤ X < 4 | 0.07 ≤ Y < 0.16 |
D | X < 2 | Y < 0.07 |
DAT z | Grade | Leaf Length | No. of Leaves | Leaf Area | Shoot Fresh Weight |
---|---|---|---|---|---|
(cm) | (/plant) | (cm2/plant) | (g/plant) | ||
7 | A | 5.37a y | 6.43a | 21.79a | 1.06a |
B | 5.47a | 6.29a | 19.54b | 0.94b | |
C | 4.87b | 6.14a | 12.78c | 0.56c | |
D | 3.97c | 5.57b | 8.18d | 0.33d | |
14 | A | 6.20b | 7.67ab | 88.35b | 6.80b |
B | 7.45a | 8.23a | 128.33a | 10.67a | |
C | 6.60b | 7.67a | 93.98b | 7.59b | |
D | 6.23b | 7.29b | 69.75c | 4.80c | |
21 | A | 11.35b | 13.67a | 494.05b | 41.04b |
B | 12.60a | 13.71a | 663.46a | 55.63a | |
C | 11.23b | 12.86a | 520.49b | 48.11ab | |
D | 9.16c | 11.14b | 304.33c | 25.65c | |
28 | A | 14.23bc | 18.83a | 1373.08a | 151.80a |
B | 18.01a | 19.86a | 1629.30a | 175.87a | |
C | 15.19ab | 19.00a | 1447.08a | 150.88a | |
D | 13.47c | 16.00b | 1116.58b | 101.70b |
Irrigation Regimes | Shoot Fresh Weight (g/plant) | |
---|---|---|
Grade B | Grade C | |
2DI | 175.87 | 133.66 |
3DI | 145.88 | 150.88 |
Significance | NS z | NS |
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Jeong, J.; Ha, Y.; Kwack, Y. The Selection of Lettuce Seedlings for Transplanting in a Plant Factory by a Non-Destructive Estimation of Leaf Area and Fresh Weight. Horticulturae 2024, 10, 919. https://doi.org/10.3390/horticulturae10090919
Jeong J, Ha Y, Kwack Y. The Selection of Lettuce Seedlings for Transplanting in a Plant Factory by a Non-Destructive Estimation of Leaf Area and Fresh Weight. Horticulturae. 2024; 10(9):919. https://doi.org/10.3390/horticulturae10090919
Chicago/Turabian StyleJeong, Jaeho, Yoomin Ha, and Yurina Kwack. 2024. "The Selection of Lettuce Seedlings for Transplanting in a Plant Factory by a Non-Destructive Estimation of Leaf Area and Fresh Weight" Horticulturae 10, no. 9: 919. https://doi.org/10.3390/horticulturae10090919