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M7 NAVEL
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M7 Navel
Note: observations are made at Kenley, North Western Victoria, Australia
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The Chislett Propertyon the Murray RiverNorth West Victoria
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Kenley Climatology● Latitude: -34.86 Degrees.● Long-term average annual rainfall 309mm.●Temperature extremes -4oC Winter to
46oC Summer.●Relative humidity is generally low.
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann0
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Kenley Climatology
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Heat Unit Zones
Chislett Property1750 heat units
Daily Heat Units = [(maximum temperature + minimum temperature) ÷ 2] – 13
Above: Map showing annual heat unit zones in Australia
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M7 is a very early maturing navel
Mutation discovered in Autumn 2004 on a Navelina (clone 7.5) tree in the orchard of:
Chislett Developments Pty Ltd Kenley, Victoria, Australia.
Australian PBR granted: 2005/185USA Plant Patent: US PP18,774P2
M7 Navel
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Background
● Mutation first noticed when M7 had full colour and Navelina was light green on 02-May-2004
● Advanced colour around 4 weeks earlier than Navelina
● Very high brix 13.07 when Navelina was 9.94 on 18-May-2004
● Certified by Auscitrus to be free of any viruses in March 2006.
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Note: The true to type Fukumoto variety is not available in Australia for comparison about maturity timing is very similar to Navelina
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Outstanding Characteristics
● Earlist Colour ● Round fruit shape● Early Internal Maturity● Very high brix● Extended harvest period● No albedo breakdown● Firmer rind than Navelina throughout harvesting period
Observations made at Kenley, Victoria, which is a late citrus growing area
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Outstanding Characteristics
● Late hanging● Vigorous and a distinctive foliage● Medium to small and distinctive external navel ● Small internal navel● Early production, good yields and fruit size● Good compatibility with all rootstocks
Observations made at Kenley, Victoria, which is a mid to late growing areawww.chislettnavel.com.au
© 2012
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External Navel
● Medium to small - similar to Navelina
● Distinctive with slight lines radiating outwards from the navel.
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Internal Navel● Significantly smaller than Navelina 7.5
Photos taken August 25, 2006 at Dareton Research Station
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Colour● More even over tree and 4 weeks earlier than Navelina, gas colouring
possible early April (October NH).● M7 on the 5-Apr-05 had better colour than Navelina on the 28-Apr-05.● Individual fruit colour more uniform than Navelina.● Intensity of colour similar to Navelina when fully developed.
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Fruit Shape
● Completely round fruit
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Internal Quality ● Maturity 3 weeks earlier than Navelina● Maintains acid levels of 0.7grams of citric acid per
100 ml of juice on 06-September-2005 (March NH)● Exceptional eating quality due to higher brix (13º
plus) and balanced acid● High flavour intensity – much better eating quality
than navelina
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Internal Quality● Potentially good juicing
yields
● More advanced and intense flesh colour than Navelina
● Limonin levels to be determined and expected to be relatively low like Navelina
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Note: Fukumoto shown is not the same variety existing in other countries
Internal Quality California Standard - proposed for M7TM 105 - 170
California Standard = 16.5(Brix-4TA)
2011 Season (2 weeks late)
California Standard
M7 Navelina
15/04 86.5 65.3
29/04 116.5 94.7
(Kenley – late maturing area)
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Rind Quality
● No sign of albedo breakdown or creasing ever observed.
● Very strong and firmer than Navelina throughout harvest period.
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Leaf Shape● Length to width ratio
significantly lower and petiole wing more pronounced compared to Navelina.
● Leaf also has a distinctive undulation
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Foliage● More upright and open
than Navelina allowing more light penetration facilitating colour development
● Less pruning needed
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Tree and Yields● Very vigorous tree. Fast growing and
early cropping
● Good production – 15 tonne/ha from 3.5 year old trees (1000 trees/ha)
● Good fruit size, probably better than Navelina
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Protectability● M7 is easy to protect.● Any fruit in the market before Navelina has to
be M7.● Round fruit shape with distinctive navel end
marks.● Easy to identify the variety in the field due to
the distinctive leaf shape and foliage.
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Harvest period● Harvest possible 3 weeks earlier than Navelina
● Kenley (late maturity area) juice 40%, brix 10o, ratio 8.0:1 by early to mid April (October NH)
● Fruit - firm and good condition on tree for minimum 4 months (firmer than Navelina at all stages)
● Acid levels maintained above 0.75% for at least 4 months
● No fruit drop without 2,4D up to the end of August, obvious drop on Navelina
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% J
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eFig 1: Comparison of % juice in M7 and Navelina
7.5 across seven seasons.
M7
Navelina
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De
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xFig 2: Comparison of º Brix in M7 and Navelina 7.5 across
seven seasons
M7 Navelina
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Fig 3: % acid in juice from M7 and Navelina 7.5 across seven seasons
M7
Navelina
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Fig 4: Brix:Acid ratio in juice from M7 and Navelina 7.5 sampled across seven seasons
M7
Navelina
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Fruit Maturity 2012Variety Juice % Acid Brix Ratio
Attwood 53 1.18 8.64 7.34
Fisher 41 1.16 9.24 7.93
M7 (T/W) 46 1.22 10.00 8.22
M7 46 1.13 10.72 9.46
M7 (Nursery Trees) 49 1.08 10.12 9.41
Passin (Volk) 45 1.26 8.46 6.71
Washington 45 1.41 9.08 6.42
Picked 22/03/12 at Jamesville, slightly north of Mildura, Victoria, Australia
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Fruit Maturity 2012Variety Date Details Juice % Acid Brix Ratio
M7 - ChisDev 20/03/12 M12 block 41 1.07 9.98 9.33
M7 - ChisDev 20/03/12 M4 block 47 1.23 10.97 8.92
Navelina – ChisDev 20/03/12 M7 - NW 48 1.26 9.15 7.26
M7 - Cock 23/03/12 Trifoliata T/W 46 1.58 11.30 7.15
M7 - ChisDev 01/05/12 M12 block 39 0.90 11.58 12.87
Navelina – ChisDev 01/05/12 M4 block 34 1.18 10.44 8.85
Navelina – ChisDev 01/05/12 M7 - NW 48 0.90 9.98 11.04
M7 Packout 2010M7 Packout Percentage off CVS Grader 11th May 2010Count 1st Grade 2nd Grade 3rd Grade
32 1.00 0.40 0.00
36 3.70 0.10 0.00
40 6.10 1.30 0.40
48 17.00 3.60 0.50
56 27.30 5.50 0.70
72 18.20 3.50 0.50
88 4.60 1.20 0.10
100 1.70 0.30 0.10
125 0.40 0.00 0.00
138 0.00 0.00 0.00
TOTAL 80.00 15.90 2.30
PACKED 98.20%
JUICE OFF GRADER 1.80%
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M7 Packout 2011
95 90 87 84 81 77 75 72 69 67 660
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Harvested Kenley from 3.5 year old unpruned trees
TestimonialHi Guys,Here are the results for the samples Greg sent in.The M7 was very impressive, I tested 6 fruit.With the other 2, I cut one up and left the other whole and showed Bill, Perry, Ferdi and Gerome (Holman Fresh). All were very impressed, Gerome especially – he said he loved the variety and couldn’t believe the taste, colour, shape and rind quality. He said it needs a sexier name and thought Mara Mara could be a good one! I’ll let you think about that one GregKind regards, Mara Milner
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30th March 2011 - Kenley
30th March 2011 - Kenley
8th April 2011 - Kenley
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Photo Album 2011
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5th April 2011 - Jamesville5th April 2011 - M7 1.5 years - Jamesville
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© 2012
M7
Navelina M7
M7 3 year old tree
M7 after gassing – picked 18th April 2010M7 before gassing 20th April 2010
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M7 5th May 2011
M7 - packing line 10th May 2011 MFC
M7 packed MFC 10th May 2011www.chislettnavel.com.au© 2012
M7 - packing line 10th May 2011 MFC M7 Melbourne Market 12th May 2011
M7 - packing line 10th May 2011 MFC
M7 4 years after planting M7 4 years after planting
M7 2 years after planting M7 2 years after planting
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56-60 61-65 66-70 71-75 76-80 81-85 86-90 91-95 96-1000.0
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M7 Fruit Size Distribution on M12 5Yr Old TreesKENLEY 27/03/2012
Size (mm)
Perc
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ge (%
)M7 Fruit Size 2012
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Further information and current updates go to:
www.chislettnavel.com
or contactGreg and Susan Chislett
[email protected]@chislettnavel.com.au
+61 (03) 50388238
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