Central Ridge Multi-Sweet Orange Scion Rootstock Trial€¦ · Central Ridge Multi-Sweet Orange...
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Central Ridge Multi-Sweet Orange Scion Rootstock Trial
Dr. Bill Castle - Dr. Jude Grosser - Dr. Fred Gmitter
December 7, 2018CREC Citrus Plant Improvement
Central Ridge Multi-Sweet Orange Scion Rootstock Trial - Description
This replicated trial, planted in Dundee in 2013, consists of ‘Hamlin,’ ‘Valquarius’ and ‘Valencia’ on 11 rootstocks, including the best rootstocks from the Forner breeding program in Spain, C-series rootstocks from CA, and one tetraploid citrumelo from the UF/CREC breeding program. The goal is to identify superior sweet orange/rootstock combinations for the Ridge based on yield, juice quality and apparent HLB tolerance.
CREC Citrus Plant Improvement
Central Ridge Multi-Sweet Orange Scion Rootstock Trial
Location: Dundee
Scion - Rootstocks: Valquarius – Hamlin – Valencia on 11 rootstocks
Date planted: June 2013
Design: RCBD – 3 replications• Plot: 4-20 trees• Spacing: 12 x 22 ft.
Data collected:• Yield: 2015-16; 2016-17; 2017-18• HLB ratings 2016-17• Tree Size and Tree Health Rating (data not presented)• Juice data 2017-18
CREC Citrus Plant Improvement
Multi-Scion Rootstock Trial –Yield/tree [boxes] 2015-16, 2016-17 & 2017-18
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Scion:Rootstock(V:Valencia H:Hamlin Q:Valquarius)
Mean yield/tree (boxes) 2015-16 Mean yield/tree (boxes) 2016-17 Mean yield/tree (boxes) 2017-18
0 0.2 0.4 0.6 0.8 1 1.2
Mean yield/tree (boxes) 2015-16
Mean yield/tree (boxes) 2016-17
Mean yield/tree (boxes) 2017-18
Hamlin Valencia Valquarius
CREC Citrus Plant Improvement
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Scion: Rootstock(V: Valencia H:Hamlin Q:Valquarius) CREC Citrus Plant Improvement
Central Ridge Multi-Sweet Orange Scion Rootstock Trial –Cumulative 3-yr yield/tree [boxes/tree]: 2015-16, 2016-17 & 2017-18
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Scion: Rootstock(V: Valencia H:Hamlin Q:Valquarius)
Mean yield/tree (boxes) HLB Fruit drop
2016-17 Central Ridge Multi-Sweet Orange Scion Rootstock Trial –Yield [boxes/tree], HLB and Fruit Drop Rating
CREC Citrus Plant Improvement
Q1789
Q1810Q1846
Q1850
Q1853
H1789
H1810
H1845
H1846
H1849
H1850
H1853
H1855
H1856
H1858
2017-18 Central Ridge Multi-Sweet Orange Scion Rootstock Trial –Heat Map Juice data
Data collected from 4-year old trees
Valencia(April 2018)
Valquarius(Jan 2018)
Hamlin(Jan 2018)
V1789
V1810
V1845
V1846
V1849
V1850
V1853
V1855V1856
V1858
1789 Crocker pummelo x TF
1810 WGFT + 50-7
1845 C-22: Bitters
1846 C-57: Furr
1849 Willits citrange
1850 FA (02033) Troy. x TF x Cleo
1853 Forner (03015) Cleo x TF (FA-5)
1854 Forner (030113) Cleo x TF (FA 13)
1855 Forner (030126) Cleo x TF
1856 Forner (030142) Cleo x TF (FA-42)
1858Forner (05017) Kiing mand. X TF (FA-517)
CREC Citrus Plant Improvement
Med
High rating
Low rating
Medium rating
Heat Map Legend