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UF/IFAS Citrus Research

UF/IFAS Citrus Research

Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials

Dr. Bill Castle – Dr. Fred Gmitter – Dr. Jude Grosser
December 7, 2018
CREC Citrus Plant Improvement

Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials – Description

There are 4 replicated trials, each ca. 10-acre involving a total of about 17,000 trees. The objective is to determine the performance of a broad range of rootstocks with ‘Hamlin’ or ‘Valencia’ scion on a typical Ridge (Lake Wales) or flatwoods site (Basinger). The trials, planted in 2015 at 8 x 22 ft., include numerous diploid and tetraploid rootstocks from the UF/CREC breeding program along with the best selections from the Forner breeding program in Spain, the C-Series rootstocks from California, popular USDA rootstocks, and commercial rootstocks for comparison, a total of 58 rootstock candidates, all amenable to seed propagation. The objective is to identify suitable scion/rootstock combinations for each site type with emphasis on combinations that will generate earlier returns.

Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials

Location
- Site 1: Basinger Grove
- Site 2: Camp Mack Grove

Scion – Rootstocks
- Hamlin (58 rootstocks)
- Valencia (53 rootstocks)

Date planted – September 2015.

Design – RCBD, 10 replications [6 replications used for data analysis]
- Plot size: 8 trees
- Spacing: 8 x 22 ft.

Data collected
2016-17: Tree size, Tree Health Rating,  Number of Fruit/tree
- 2017-18 : Tree size, Tree Health Rating,  Number of Fruit/tree

2017-18 Basinger Grove: ‘Hamlin’ Orange
(Mean tree size rating, tree health rating and number of fruit per tree)

2017-18 basinger grove hamlin
B11R4T22 [24], UFR-2: Orange 4 [47], V-17 [47], Orange 14 [48], FA-517 [48], Green 7 [40], X-639 [48], N40R1T18 [16], C-22 [48], FA-5 [48], FA-2344 [02034] [16], UFR-1: Orange 3 [48], Amb + Czo [48], UFR-5: White 4 [48], US-897 [48], Wgft + 50-7 [48], UFR-4: Orange 19 [47], FA-13 [40], FA-5128 [48], N40R2T19 [8], C-54 [48], B SOUR [32], White 3 [32], C-57 [48], C-146 [47], UFR-6: Changsha + 50-7 [47], B11R4T18 [16], FA-31 [32], 6058 + 2071-02-2 [48], FA-74 [24], N40R2T24 [8], N40R2T26 [8], UFR-17: Green 2 [48], Green 3 [48], FA-5115 [40], Sorp + Sh-991 [48], Amb + Benton [47], Changsha + Benton [48], N40R1T2 [8], N40R3T27 [8], White 1 [32], UFR-3: Orange 15 [40], Orange 13 [32], N40R3T26 [7], SWG [24], N40R1T26 [8], N40R2T21 [7]


2017-18 Camp Mack Grove: ‘Hamlin’ Orange
(Mean Tree size rating, tree health rating and number of fruit per tree)

2017-18 camp mack grove hamlin orange
C-22 [48], N40R1T2 [8], N40R2T21 [8], UFR-17: Green 2 [48], N40R1T18 [32], C-146 [48], SWG [40], Changsha + Benton [48], 6058 + 2071-02-2 [48], UFR-5: White 4 [48], Green 7 [40], C-54 [48], FA-5 [48], B11R4T22 [40], FA-2344 [02034] [24], C-57 [48], White 3 [40], N40R3T27 [16], N40R3T26 [16], UFR-6: Changsha + 50-7 [48], B11R4T18 [8], FA-417 [16], FA-5115 [48], US-897 [47], US 942 [8], White 1 [48], UFR-1: Orange 3 [32], N40R2T19 [16], Wgft + 50-7 [48], Green 3 [40], UFR-2: Orange 4 [40], FA-74 [40], FA-517 [48], N40R2T24 [16], X-639 [48], B Sour [8], FA-31 [48], N40R1T26 [8], Orange 14 [48], UFR-4: Orange 19 [40], Amb + Benton [48], Sorp + Sh-991 [48], FA-5128 [40], FA-13 [48], US 802 [16], Orange 13 [48], UFR-3: Orange 15 [48], N40R2T26 [16], Amb + Czo [48], Cleo [8], V-17 [47], US 812 [8]


2017-18 Basinger Grove: ‘Valencia’ Orange
(Mean Tree Size Rating, Tree Health Rating and Number of Fruit per Tree)

2017-18 basinger grove valencia
N40R2T19 [7], B Sour [48], Wgft + 50-7 [48], UFR-1: Orange 3 [48], UFR-6: Changsha + 50-7 [48], US-897 [48], Orange 13 [40], White 1 [48], Green 3 [48], N40R1T2 [8], FA-5A [48], C-57 [48], C-54 [48], Orange 14 [48], Amb + Benton [48], Changsha + Benton [48], FA-5115 [48], Amb + Czo [48], X-639 [48], UFR-3: Orange 15 [47], FA-74 [48], C-146 [48], Green 7 [47], UFR-5: White 4 [48], White 3 [48], UFR-4: Orange 19 [48], N40R3T26 [16], N40R1T18 [32], UFR-17: Green 2 [48], FA-31 [45], FA-2344 [02034] [24], FA-5128 [47], UFR-Orange 4 [47], SWG [40], FA-13 [48], Sorp + Sh-991 [48], C-22 [48], B11R4T22 [40], N40R2T24 [16], N40R2T21 [8], 6058 + 2071-02-2 [48], N40R1T26 [16], B11R4T18 [16], N40R3T27 [16], FA-517 [48], V-17 [48], N40R2T26 [8], N40R1T25 [8]


2017-18 Camp Mack Grove: ‘Valencia’ Orange
(Mean Tree size, tree health rating and cumulative 2-year number of fruit per tree: 2016-17 & 2017-18)

2017-18 camp mack grove valencia
C-146 [48], C-22 [48], FA-5A [47], US-897 [48], N40R1T25 [2], C-54 [48], White 1 [40], UFR-4: Orange 19 [48], C-57 [48], V-17 [48], Wgft + 50-7 [48], 6058 + 2071-02-2 [48], N40R1T18 [32], B11R4T18 [19], B Sour [48], UFR-3: Orange 15 [32], N40R2T21 [8], N40R2T26 [16], US 942 [16], UFR-17: Green 2 [48], SWG [8], FA-13 [48], UFR-1: Orange 3 [48], FA-5128 [48], Changsha + Benton [48], FA-74 [48], FA-517 [48], N40R3T26 [16], Green 3 [48], N40R3T27 [12], Green 7 [48], B11R4T22 [24], UFR-6: Changsha + 50-7 [48], FA-31 [24], X-639 [48], UFR-5: White 4 [48], Amb + Czo [40], FA-2344 [02034] [24], FA-5115 [48], White 3 [48], UFR-2: Orange 4 [40], Sorp + Sh-991 [48], US 802 [24], Orange 14 [48], Morton [10], Orange 13 [32], N40R1T26 [3], Amb + Benton [48], US 812 [8], N40R2T24 [16], Kuharske [6]


2017-18 Basinger Grove: ‘Hamlin’ Orange Heat Map
Data collected from 2-year old trees

2017-18 basinger grove hamlin orange heatmap
6058 + 2071-02-2, Changsha + Benton, UFR-3: Orange 15, Amb + Benton, Green 3, White 1, UFR-6: Changsha + 50-7, UFR-4: Orange 19, US-897, N40R1T2, N40R2T24, N40R2T21, Orange 13, Amb + Czo, B11R4T18, C-54, C-57, B Sour, FA-5128, FA-13, White 3, FA-31, FA-74, UFR-17: Green 2, Sorp + Sh-991, SWG, C-146, FA-5115, UFR-5: White 4, C-22, Wgft + 50-7, FA-5, Green 7, N40R1T26, N40R3T27, N40R2T19, N40R2T26, B11R4T22, UFR-2: Orange 4, V-17, FA-2344 [02034], X-639, N40R1T18, UFR-1: Orange 3, FA-517, Orange 14, N40R3T26


2017-18 Camp Mack Grove: ‘Hamlin’ Orange Heat Map
Data collected from 2-year old trees

2017-18 camp mack grove hamlin orange heat map
6058 + 2071-02-2, SWG, FA-31, FA-74, US-897, FA-13, V-17, FA-5, US 802, B Sour, US 942, B11R4T22, C-57, FA-5115, FA-517, N40R2T24, C-146, Orange 14, UFR-4: Orange 19, X-639, Cleo, C-54, UFR-17: Green 2, UFR-5: White 4, UFR-1: Orange 3, White 3, C-22, N40R1T2, UFR-6: Changsha + 50-7, White 1, FA-5128, N40R1T18, N40R2T21, N40R3T27, FA-417, N40R3T26, N40R1T26, Amb + Benton, N40R2T19, Green 7, Amb + Czo, Wgft + 50-7, UFR-4: Orange 4, US 812, Orange 13, Sorp + Sh-991, B11R4T18, Changsha + Benton, N40R2T26, FA-2344 [02034], Green 3, UFR-3: Orange 15


2017-18 Basinger Grove: ‘Valencia’ Orange Heat Map
Data collected from 2-year old trees

2017-18 basinger grove valencia orange heatmap
6058 + 2071-02-2, V-17, B11R4T18, N40R1T26, Amb + Benton, FA-5A, C-146, X-639, UFR-3: Orange 15, Amb + Czo, UFR-2: Orange 4, FA-5128, Sorp + Sh-991, SWG, Green 7, FA-517, N40R2T21, N40R2T24, N40R1T25, N40R2T26, N40R3T27, B Sour, N40R2T19, C-57, Orange 14, Changsha + Benton, UFR-6: Changsha + 50-7, Wgft + 50-7, Green 3, White 1, B11R4T22, N40R1T18, C-22, FA-13, FA-2344 [02034], White 3, N40R3T26, FA-74, C-54, FA-5115, UFR-1: Orange 3, US-897, N40R1T2, Orange 13, FA-31, UFR-5: White 4, UFR-17: Green 2, UFR-4: Orange 19


2017-18 Camp Mack Grove: ‘Valencia’ Orange Heat Map
Data collected from 2-year old trees

2017-18 camp mack grove valencia orange heat map
C-146, C-22, FA-5A, C-54, N40R1T25, US-897, White 1, N40R2T21, US 942, US 802, UFR-4: Orange 19, C-57, Wgft + 50-7, UFR-3: Orange 15, N40R3T26, FA-517, SWG, UFR-17: Green 2, Orange 13, Green 7, UFR-6: Changsha + 50-7, Amb + Czo, N40R1T18, B Sour, FA-13, X-639, FA-74, N40R2T26, FA-5128, FA-31, FA-5115, US 812, V-17, 6058 + 2071-02-2, B11R4T18, UFR-1: Orange 3, B11R4T22, N40R3T27, FA-2344 [02034], Changsha + Benton, Green 3, UFR-5: White 4, UFR-2: Orange 4, White 3, Orange 14, Sorp + Sh-991, Morton, Amb + Benton, N40R1T26, N40R2T24, Kuharske

Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials