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Advances in rootstock varieties Tahir Khurshid Andrew Creek CAL Juice Forum Leeton, 1 May 2018
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Advances in rootstock varieties
Tahir Khurshid
Andrew Creek
CAL Juice Forum
Leeton, 1 May 2018
Seed
Introduction
1993/94
China & Vietnam
Sa
lt
Trees produced for trials
Mother trees
Rootstock seedlings
Experimental program (Dareton)
46 rootstocks - China
8 rootstocks - Vietnam
Navelina, Lane Late, Imperial, Eureka
Trifoliata
Mandarin
Yuzu
Erythrosa
Ichangensis
Sour Orange
Trifoliata
Mandarin
Yuzu
Erythrosa
Ichangensis
Sour Orange
Results:Stage 1: trees planted – 1999
Valencia (2002-06), Dareton(deep sandy loam)
0.0
1.0
2.0
3.0
4.0
5.0
Donghai
Tanghe
Lunan
Swingle
Troye
rZao
Houpi
Zhoupi
Goutou
Xiechen
Yie
ld e
ffic
ien
cy (
Kg
/cm
2 )
Brix0 11.4 12.0 11.3 11.0 12.2 12.8 11.7 12.1 10.8 12.3
B:A 10.6 11.8 10.6 9.9 10.0 11.1 10.8 11.6 8.9 9.5
Juc% 53 54 55 56 54 51 54 52 51 48
Final Report _CT0325 (Hort Innovation)
Riverina
Planted, Oct 2010
Semi-commercial trial in Clay soil
Rootstocks: Zao Yang, Tanghe, Donghai, Tri22 (Control)
Scions: Val 1, Val 2, Val 3, Val 4, Val 5, Val 6, Keenan (Control)
Blocks: 6 (3 tree plot)
1.8 x 5 m (1100 trees/ha)
Cumulative yield (2015-17)
Donghai Tanghe Tri22 Zao Yang Mean
Keenan 84 84 64 96 82
Val 1 69 70 69 84 73
Val 2 83 85 88 103 90
Val 3 85 82 74 99 85
Val 4 66 74 74 92 77
Val 5 89 100 91 105 96
Val 6 78 77 69 104 82
Mean 93 95 88 114
Percent increase in yield)
Control vs.Val 5/ZaoYang = 64%
Yield/tree (kg)
0Brix value (2016)
Donghai Tanghe Tri22 Zao Yang Mean
Keenan 11.1 11.6 10.7 11.1 11.1
Val 1 10.3 10.4 10.5 10.2 10.3
Val 2 10.4 10.6 10.4 10.5 10.5
Val 3 10.0 10.8 10.4 10.8 10.5
Val 4 10.0 10.8 10.5 10.7 10.5
Val 5 12.2 12.1 11.4 12.3 12.0
Val 6 10.1 10.1 10.8 11.0 10.5
Mean 10.6 10.9 10.7 11.4
Tree growth
Valencia 5Keenan
Valencia 2
Returns, 5 to 7 year old (1000 tree/ha, $350/T)
Variety/Rootstock
20152016 2017
2015-17Cumulative
3 year return
t/ha $/ha t/ha $/ha t/ha $/ha $
Keenan/
Tri22 30 $10,500 18 $6,300 16 $5,600 $22,400
Val5/
Zao Yang 46 $16,100 24 $8,400 35 $12,250 $36,750
Difference$14,350
Keenan /Tri22 planted at (3.2 x 6.4 m) 488 tree/ha $11,000
Release of new Rootstocks10 May 2017, Parliament House, Sydney
Release of new rootstock …
Anjiang hongjuCao shixiangju
Zao YangDonghai Tanghe
Ghana
Trifoliata types:
Zao Yang & Tanghe: Lane Late, Valencia
Donghai: Navelina, Valencia
Ghana: Navelina
Mandarin types:
Anjiang Hongju: Imperial, Lane Late
Caoshi xiangju: Valencia
NSW CitrusConnect & NSW DPI citrus website
Release of new rootstocks…
New Components
Establish 20 national trials in 5
states of Australia (Oct 2017)
Scions: Valencia, Navel, Afourer4 sites
Dwarfing effect trials planted at Dareton, Oct 2017
Rootstock
Chinese: 87-25, No. 22, Tri22, FD (Control)
US: C22, C54,C57 (Sunki X Tri - Swingle)
ScionsTang Gold and M7 navel
Import of HLB tolerant rootstock
Dr Kim Bowman (USDA)
US-942, US-802
Testing for yield and quality
Summary:
Val 5/Zao Yang - (DV® Valencia)
6 Chinese rootstocks released – Auscitrus
New grower trials underway (Oct, 17)
Dwarfing rootstock trials underway (Oct, 17)
Import of HLB rootstocks underway
Acknowledgements:
Tim Hermann
Graeme Sanderson
Steven Falivene
Justin Davidson
