1. LaBelle Vernia Rootstock Trial
Dr. Bill Castle – Dr. Fred Gmitter - Dr. Jude Grosser
September 6, 2019
CREC Citrus Plant Improvement

2. LaBelle Vernia Rootstock Trial - Description
Vernia sweet orange is the scion in this cooperator trial planted mostly in March in a flatwoods grove located south of LaBelle near Felda off of Highway 29.  The site is described by the cooperator as one of their better ones based on the high level of performance of the previous citrus planted on the site.  The trial consists of trees on 76 rootstocks among which are the FA series from Spain, the C-series from California and various sexual and somatic hybrids produced by the CREC plant breeding team.  Virtually all the rootstocks are those included in several other trials; thus, this trial is one of a network of trials intended to evaluate the rootstocks at multiple sites with different scions.
CREC Citrus Plant Improvement

3. LaBelle Vernia Rootstock Trial
Location: LaBelle - Felda
Scion – Vernia
Rootstocks – 76
Date Planted: March 2010
Design: Randomized complete-block with 1-7 replications
Plot size: mostly 2-8 trees
Spacing: 7.5 x 22 ft.
Data (Although trees on 76 rootstocks were planted originally, there are some graphical results with only 48 rootstocks. That difference is the result of attrition especially among small plots [1-3 trees] and to other factors like hurricanes or no crop.)
: Yield
: Yield, HLB rating, juice quality
: Yield, tree size and health ratings
: Yield, tree health rating, juice quality, PS/acre
4-year cumulative yield
CREC Citrus Plant Improvement

4. 2013-14 LaBelle Vernia Rootstock Trial – Mean yield + std. dev
LaBelle Vernia Rootstock Trial – Mean yield + std.dev. [boxes/tree], March 2014
(*) Rootstocks without a bar, std.dev. = 0 *
CREC Citrus Plant Improvement

5. 2014-15 LaBelle Vernia Rootstock Trial – Yield + std. dev
LaBelle Vernia Rootstock Trial – Yield + std.dev. [boxes/tree], March 2015
(**) Rootstocks without a bar, std.dev.= 0 **
CREC Citrus Plant Improvement

6. LaBelle Vernia Rootstock Trial – Mean Yield [boxes/tree], PS/box and HLB rating, March 2015, sorted by PS/box
(*) rootstock with only 1 plot with fruit available for sampling and yield data for the season.
CREC Citrus Plant Improvement

7. LaBelle Vernia Rootstock Trial – Mean Yield [boxes/tree], PS/box and HLB rating, March 2015, sorted by yield
(*) rootstock with only 1 plot with fruit available for sampling and yield data for the season.
CREC Citrus Plant Improvement

8. 2014-15 LaBelle Vernia Rootstock Trial –Mean juice Acid + std. dev
LaBelle Vernia Rootstock Trial –Mean juice Acid + std.dev., March 2015 *
CREC Citrus Plant Improvement

9. 2014-15 LaBelle Vernia Rootstock Trial – Mean juice Brix + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Brix + std.dev., March 2015 *
CREC Citrus Plant Improvement

10. 2014-15 LaBelle Vernia Rootstock Trial – Mean juice Ratio + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Ratio + std.dev., March 2015 *
CREC Citrus Plant Improvement

11. 2014-15 LaBelle Vernia Rootstock Trial – Mean juice Color + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Color + std.dev., March 2015
CREC Citrus Plant Improvement

12. 2017-18 LaBelle Vernia Rootstock Trial – Mean tree size rating + std
LaBelle Vernia Rootstock Trial – Mean tree size rating + std.dev., November 2017 *
CREC Citrus Plant Improvement

13. 2017-18 LaBelle Vernia Rootstock Trial – Mean tree Health rating + std
LaBelle Vernia Rootstock Trial – Mean tree Health rating + std.dev., November 2017 *
CREC Citrus Plant Improvement

14. 2017-18 LaBelle Vernia Rootstock Trial – Mean yield + std. dev
LaBelle Vernia Rootstock Trial – Mean yield + std.dev. [boxes/tree, January 2018] [Note that Hurricane Irma struck in September 2017 affecting yield and tree condition.]
(*) Rootstocks without a bar, std.dev.= 0 *
CREC Citrus Plant Improvement

15. 2018-19 LaBelle Vernia Rootstock Trial – Mean tree Health ratings + std.dev., October 2018
CREC Citrus Plant Improvement

16. 2018-19 LaBelle Vernia Rootstock Trial – Mean Yield + std. dev
LaBelle Vernia Rootstock Trial – Mean Yield + std.dev. [boxes/tree, February 2019]
CREC Citrus Plant Improvement

17. 2018-19 LaBelle Vernia Rootstock Trial – Juice quality, February 2019, sorted by PS/box

18. 2018-19 LaBelle Vernia Rootstock Trial – Mean juice Acid + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Acid + std.dev., February 2019

19. 2018-19 LaBelle Vernia Rootstock Trial – Mean juice Brix + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Brix + std.dev., February 2019
CREC Citrus Plant Improvement

20. 2018-19 LaBelle Vernia Rootstock Trial – Mean juice Ratio + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Ratio + std.dev., February 2019

21. 2018-19 LaBelle Vernia Rootstock Trial – Mean juice Color + std. dev
LaBelle Vernia Rootstock Trial – Mean juice Color + std.dev., February 2019
(*) Rootstocks without a bar, std.dev.= 0

22. 2018-19 LaBelle Vernia Rootstock Trial – Mean PS/box + std. dev
LaBelle Vernia Rootstock Trial – Mean PS/box + std.dev., February 2019
(*) Rootstocks without a bar, std.dev.= 0
CREC Citrus Plant Improvement

23. 2018-19 LaBelle Vernia Rootstock Trial – PS/acre [calculated @ 264 trees/acre,7.5 x 22 ft.]
CREC Citrus Plant Improvement

24. LaBelle Vernia Rootstock Trial – 4-year cumulative Yield [boxes/tree], , , and seasons
CREC Citrus Plant Improvement