Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials · Color coding is used to better visualize the rating for tree health, number of fruit and tree size for ‘Valencia’

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

Dr. Bill Castle – Dr. Fred Gmitter - Dr. Jude Grosser

December 7, 2018CREC 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. [Dr. Ute Albrecht (SWFREC) has joined the CREC team to assist with data collection.]

CREC Citrus Plant Improvement

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

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)

(Lykes Sweet Orange Rootstock Trial)

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

Rootstock [Total number of trees evaluated]

Tree Size Rating Tree Health Rating Number of Fruit/Tree

Tree Size Rating Scale0: Dead1: Little to no growth2: Some growth3: Average for field4: Above average5: Biggest tree in field

Tree Health Rating Scale0: Dead1: Heavy decline2: Some decline3: Average for field4: Above average5: No signs of HLB CREC Citrus Plant Improvement

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


0.0

1.0

2.0

3.0

4.0

5.0

6.0


Tree Size Rating Tree Health Rating Number of Fruit/Tree


Tree Health Rating Scale0: Dead1: Heavy decline2: Some decline3: Average for field4: Above average5: No signs of HLB

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

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0


Tree Size Ratings Tree Health Ratings Number of Fruit/Tree




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)

0.0

10.0

20.0

30.0

40.0

50.0

60.0


Tree Size Rating Tree Health Rating Cum 2-year Number of Fruit/Tree




2017-18 Basinger Grove:‘Hamlin’ Orange Heat Map

Data collected from 2-year old trees

Med

High rating

Low rating

Medium rating

Heat Map InterpretationColor coding is used to better visualize the rating for tree health, number of fruit and tree size for ‘Hamlin’ orange on each of the rootstocks in this trial. A high (Best) rating is in blue and low (Worst) rating is in red. The other colors represent the values between high and low according to the color scale. For tree size, dark blue indicates a large tree, green a medium-sized tree and red a small tree.


Nu

mb

er o

f Fr

uit

/Tre

e

6058 + 2071-02-2

Amb + Benton

Amb + Czo

B Sour

B11R4T18

B11R4T22

C-146

C-22

C-54C-57

UFR-6: Changsha + 50-7

Changsha + Benton

FA-13

FA-2344 [02034]

FA-31

FA-5

FA-5115

FA-5128

FA-517

FA-74UFR-17: Green 2

Green 3

Green 7

N40R1T18

N40R1T2

N40R1T26

N40R2T19

N40R2T21N40R2T24

N40R2T26

N40R3T26

N40R3T27

Orange 13

Orange 14

UFR-3: Orange 15

UFR-4: Orange 19

UFR-1: Orange 3

UFR-2: Orange 4

Sorp + Sh-991SWG

US-897

V-17

Wgft + 50-7

White 1

White 3

UFR-5: White 4

X-639

Tree

Hea

lth

Rat

ing

Tree

Siz

e R

atin

g

2017-18 Camp Mack Grove:‘Hamlin’ Orange Heat Map

Data collected from 2-year old trees6058 + 2071-02-2

Amb + Benton

Amb + Czo

B Sour

B11R4T18

B11R4T22

C-146

C-22

C-54

C-57


Changsha + Benton

Cleo

FA-13

FA-2344 [02034]

FA-31

FA-417

FA-5

FA-5115

FA-5128

FA-517

FA-74

UFR-17: Green 2

Green 3

Green 7

N40R1T18

N40R1T2

N40R1T26

N40R2T19

N40R2T21

N40R2T24

N40R2T26

N40R3T26

N40R3T27

Orange 13

Orange 14

UFR-3: Orange 15

UFR-4: Orange 19

UFR-1: Orange 3

UFR-4: Orange 4

Sorp + Sh-991

SWG

US 802

US 812

US 942

US-897

V-17

Wgft + 50-7

White 1

White 3

UFR-5: White 4

X-639

Tre

e S

ize

Rat

ing

Tre

e H

eal

th R

atin

g

Nu

mb

er

of

Fru

it/T

ree

Med

High rating

Low rating

Medium rating

Heat Map InterpretationColor coding is used to better visualize the rating for tree health, number of fruit and tree size for ‘Hamlin’ orange on each of the rootstocks in this trial. A high (Best) rating is in blue and low (Worst) rating is in red. The other colors represent the values between high and low according to the color scale. For tree size, dark blue indicates a large tree, green a medium-sized tree and red a small tree.


6058 + 2071-02-2

Amb + Benton

Amb + Czo

B Sour

B11R4T18

B11R4T22

C-146

C-22

C-54

C-57

UFR-6: Changsha

+ 50-7

Changsha + Benton

FA-13FA-2344 [02034]

FA-31

FA-5115

FA-5128

FA-517

FA-5A

FA-74

UFR-17: Green 2

Green 3

Green 7

N40R1T18

N40R1T2

N40R1T25

N40R1T26

N40R2T19

N40R2T21N40R2T24

N40R2T26

N40R3T26

N40R3T27

Orange 13

Orange 14

UFR-3: Orange 15

UFR-4: Orange 19

UFR-1: Orange 3

UFR-2: Orange 4

Sorp + Sh-991SWG

US-897

V-17

Wgft + 50-7

White 1

White 3

UFR-5: White 4

X-639

2017-18 Basinger Grove:‘Valencia’ Orange Heat Map


Med

High rating

Low rating

Medium rating

Heat Map InterpretationColor coding is used to better visualize the rating for tree health, number of fruit and tree size for ‘Valencia’ orange on each of the rootstocks in this trial. A high (Best) rating is in blue and low (Worst) rating is in red. The other colors represent the values between high and low according to the color scale. For tree size, dark blue indicates a large tree, green a medium-sized tree and red a small tree.


Tree

Siz

e R

atin

g

Tree

Hea

lth

Rat

ing

Nu

mb

er o

f Fr

uit

/Tre

e

C-146 C-22FA-5A

US-897 N40R1T25C-54

White 1

UFR-4: Orange 19 C-57

V-17

Wgft + 50-7

6058 + 2071-02-2

N40R1T18

B11R4T18

B Sour

UFR-3: Orange 15

N40R2T21

N40R2T26

US 942

UFR-17: Green 2SWG

FA-13

UFR-1: Orange 3

FA-5128

Changsha + Benton

FA-74

FA-517N40R3T26

Green 3

N40R3T27

Green 7

B11R4T22


FA-31

X-639

UFR-5: White 4

Amb + Czo

FA-2344 [02034]

FA-5115

White 3UFR-2: Orange 4

Sorp + Sh-991

US 802

Orange 14

Morton

Orange 13

N40R1T26Amb + Benton

US 812

N40R2T24Kuharske

2017-18 Camp Mack Grove:‘Valencia’ Orange Heat Map


Med

High rating

Low rating

Medium rating

Heat Map InterpretationColor coding is used to better visualize the rating for tree health, number of fruit and tree size for ‘Valencia’ orange on each of the rootstocks in this trial. A high (Best) rating is in blue and low (Worst) rating is in red. The other colors represent the values between high and low according to the color scale. For tree size, dark blue indicates a large tree, green a medium-sized tree and red a small tree.


Nu

mb

er

of

Fru

it/

Tre

e

Tree

Hea

lth

Rat

ing

Tree

Siz

e R

atin

g

Documents

Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials · Color coding is used to better visualize the rating for tree health, number of fruit and tree size for ‘Valencia’