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Central Ridge Multi-Sweet Orange Scion Rootstock Trial
Dr. Bill Castle – Dr. Jude Grosser – Dr. Fred Gmitter
December 7, 2018
CREC/USDA 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.
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
Multi-Scion Rootstock Trial –Yield/tree [boxes] 2015-16, 2016-17 & 2017-18
Hamlin, Valencia, & Valquarius
V: FA-517, V: C-22 Bitters, V: FA-33, V: Wgft + TF 50-7, Q: FA-5, Q: Pumm x TF, H: C-22 Bitters, H: FA-33, H: C-57 Furr, V: Pumm x TF, H: Wgft+TF 50-7, V: Willits citrange, Q: FA-33, H: Pumm x TF, H: Willits cirange, H: FA-42, V: Forner 030126, H: Forner 030126, V: FA-42, V: FA-5, H: FA-517, H: FA-5, Q: C-57 Furr
Central Ridge Multi-Sweet Orange Scion Rootstock Trial – Cumulative 3-yr yield/tree [boxes/tree]: 2015-16, 2016-17 & 2017-18
V: Forner 030126, Q: FA-33, V: FA-517, Q: Wgft+TF 50-7, H: Pumm x TF, V: C-22 Bitters, H: FA-517, V: Wgft + TF 50-7, V: Willits citrange, H: C-57 Furr, H: Wgft+TF 50-7, H: C-57 Furr, V: Pumm x TF, Q; FA-5, H: C22 Bitters, V: FA-42, H: Forner 030126, V: FA-5, H: FA-42, H: FA-5, H: Willits cirtrange, H: FA-33, V: FA-33, Q: Pumm x TF
2016-17 Central Ridge Multi-Sweet Orange Scion Rootstock Trial – Yield [boxes/tree], HLB and Fruit Drop Rating
V: C-22 Bitters, Q: C-57 Furr, Q: FA-33, V: Wgft+TF 50-7, Q: FA-5, H: Pumm x TF, V: Forner 030126, Q: Pumm x TF, Q: Pumm x TF, Q: Wgft+TF 50-7, V: Willits citrange, V: FA-33, V: C-57 Furr, V: FA-517, H: C-22 Bitters, H: Fomer 030126, V: FA-42, V: FA-5, V: Pumm x TF, H: Wgft+TF 50-7, H: FA-33, H: C-57 Furr, H: Willits citrange, H: FA-517, H: FA-517, H: FA-42, H: FA-5, H: FA-13
2017-18 Central Ridge Multi-Sweet Orange Scion Rootstock Trial – Heat Map Juice Data collected from 4-year old trees
Crocker pummelo x TF, WGFT + 50-7, C-22: Bitters, C-57: Furr, Willits citrange, FA (02033) Troy. x TF x Cleo, Forner (03015) Cleo x TF (FA-5), Forner (030113) Cleo x TF (FA 13), Forner (030126) Cleo x TF, Forner (030142) Cleo x TF (FA-42), Forner (05017) Kiing mand. X TF (FA-517)