Effects of Nursery Container Color and Spacing on Root Zone Temperatures of ‘Soft Touch’ Holly †
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Growth and Shoot Biomass
3.2. Root Coverage Ratings
3.3. Time above Critical Temperatures
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Size Index Y | Growth Increase X | Shoot Biomass (g) | |||||
---|---|---|---|---|---|---|---|
43 DAP W | 141 DAP | 0 to 43 DAP | 43 to 141 DAP | Fresh | Dry | ||
Least square means for main effect: Container Spacing | |||||||
Jammed | 16.9 | 17.1 | 4.5 | 7.2 | 28.0 | 10.6 | |
Spaced | 15.9 | 16.3 | 4.4 | 6.1 | 26.3 | 10.2 | |
Sign. of Spacing | 0.2792 | 0.0879 | 0.8748 | 0.0207 | 0.4304 | 0.5614 | |
Least square mean for main effect: Container Color | |||||||
Black | 16.3 | 16.2 b V | 3.9 | 6.5 | 24.8 b W | 9.6 b | |
White | 16.7 | 17.3 a | 5.0 | 6.8 | 29.6 a | 11.3 a | |
Sign. of Color | 0.6606 | 0.0291 | 0.1050 | 0.5115 | 0.0204 | 0.0316 | |
Interaction least square means: Container Color × Container Spacing W | |||||||
Black | Jammed | 17.2 | 17.1 | 4.0 | 7.8 a V | 26.8 | 10.2 |
Spaced | 16.7 | 15.3 | 3.8 | 5.2 b | 22.6 | 9.0 | |
White | Jammed | 15.3 | 17.2 | 5.1 | 6.7 a | 29.2 | 11.1 |
Spaced | 16.6 | 17.3 | 5.0 | 6.9 a | 30.0 | 11.4 | |
Sign. of Interactions | 0.3444 | 0.0539 | 0.9010 | 0.0062 | 0.2201 | 0.3315 |
Significance of Treatment Factors on Root Ratings Z | |||
---|---|---|---|
Color (C) Y | <0.0001 | ||
Spacing (S) X | 0.0015 | ||
Quadrant (Q) W | 0.0401 | ||
C by S | 0.0116 | ||
C by Q | 0.0488 | ||
S by Q | 0.4694 | ||
S by C by Q | 0.7813 | ||
Interaction least square mean: container color by directional quadrant | |||
Quadrant | Color | Rating | |
North | Black | 2.9 | bc V |
White | 3.6 | a | |
South | Black | 2.0 | d |
White | 3.6 | a | |
East | Black | 2.5 | cd |
White | 3.6 | ab | |
West | Black | 2.2 | cd |
White | 3.6 | ab | |
Interaction least square mean: container color by spacing | |||
Spacing | Color | Rating | |
Spaced | Black | 2.1 | c |
White | 3.6 | a | |
Jammed | Black | 2.7 | b |
White | 3.6 | a |
Container Quadrant Z | |||||
---|---|---|---|---|---|
Spacing Y | Color X | N | S | E | W |
Jammed | Black | 11 | 67 | 33 | 78 |
White | 0.0 | 0.0 | 0.0 | 0.0 | |
Spaced | Black | 0.0 | 0.0 | 0.0 | 0.0 |
White | 0.0 | 0.0 | 0.0 | 0.0 |
Least Square Means for Main Effect: Container Spacing Z | |||||
---|---|---|---|---|---|
Spacing | North | South | East | West | |
Jammed | 0.0 b Y | 0.5 b | 0.1 b | 0.3 b | |
Spaced | 3.4 a | 3.9 a | 2.6 a | 2.9 a | |
Spacing (p-value) | 0.0004 | 0.0007 | 0.0017 | 0.0004 | |
Least square mean for main effect: Container Color | |||||
Color | North | South | East | West | |
Black | 2.9 | 3.1 a | 2.70 | 2.2 a | |
White | 0.5 | 1.3 b | 1.40 | 1.0 b | |
Color (p-value) | 0.0048 | 0.0325 | 0.2059 | 0.0473 | |
Interaction treatment least square means: Container Color × Container Spacing Y | |||||
Spacing | Color | North | South | East | West |
Jammed | Black | 0.0 b | 0.80 | 0.20 | 0.60 |
Spaced | Black | 5.8 a | 5.40 | 5.20 | 3.80 |
Jammed | White | 0.0 b | 0.20 | 0.00 | 0.00 |
Spaced | White | 1.0 b | 2.40 | 2.8 | 2.00 |
Spacing × Color (p-value) | 0.0048 | 0.1332 | 0.2799 | 0.2906 |
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McBrayer, R.H.; Pickens, J.M.; Witcher, A.L.; Wells, D.E.; Sibley, J.L. Effects of Nursery Container Color and Spacing on Root Zone Temperatures of ‘Soft Touch’ Holly. Agriculture 2022, 12, 2165. https://doi.org/10.3390/agriculture12122165
McBrayer RH, Pickens JM, Witcher AL, Wells DE, Sibley JL. Effects of Nursery Container Color and Spacing on Root Zone Temperatures of ‘Soft Touch’ Holly. Agriculture. 2022; 12(12):2165. https://doi.org/10.3390/agriculture12122165
Chicago/Turabian StyleMcBrayer, R. Hunter, Jeremy M. Pickens, Anthony L. Witcher, Daniel E. Wells, and Jeff L. Sibley. 2022. "Effects of Nursery Container Color and Spacing on Root Zone Temperatures of ‘Soft Touch’ Holly" Agriculture 12, no. 12: 2165. https://doi.org/10.3390/agriculture12122165