Citrus
Flower stimulation
Tango Mandarin
Unifrutti, Kirkwood
Semi-commercial trial
Flower stimulation
Tango Mandarin
Unifrutti, Kirkwood
Semi-commercial trial
The C4L treatment resulted in 68% of shoots falling into the category with the highest number of flowers, compared to only 17% in the untreated control
C4L was applied at 500 mL/ha on 25 July 2023 (Bud burst)
Evaluation date: 13 September 2023
Evaluation method: Each frame (approximately two-thirds of the tree) was assigned to a flower intensity category
Fruit set and retention
Tango Mandarin
Unifrutti, Kirkwood
Semi-commercial trial
C4L applied at 500 mL/ha at Bud burst (25 July 2023) resulted in a 56% increase in the number of fruit per tree, as evaluated on 13 March 2024
Fruit set and retention
Young Nova trees (Swingle rootstock) - 3 year trial period
Kirkwood
5 Replicates, 9 trees per plot
59% Cumulative increase in number of fruit over first 3 years of production
Fruit retention
Clementine
Wellington - 2024
Commercial trial
C4L applied at 500 mL/ha on 23 November 2023 resulted in a 48% increase in the number of fruit, as evaluated on 10 January 2024
Yield
Autumn Gold Navels
Piketberg - 2012
A 15% yield increase was achieved with C4L applications at
500 mL/ha
Application dates:
October 2011, December 2011 & February 2012
Improved fruit quality:
Percentage of yield allocated to juice:
C4L treated = 5.5%
Untreated control = 8.3%
Fruit size distribution
Star Ruby Grapefruit
Unifrutti Hoedspruit - 2012/13
Fruit size distribution and yield
Midknight Valencia
Sunday's River Valley - 2012
The C4L treatment resulted in a shift in fruit distribution toward larger size classes, with an average yield increase of 38% and a 6% increase in fruit weight
Fruit set, size and yield
Palmer and McClean Navel
Sunday's River Valley
After 3 consecutive years of the C4L programme, a 16% increase in the number of fruits per tree was observed, with no reduction in size
Evaluation:
Average of 16 trees per treatment
Average of Palmer and McClean Navels
Fruit Colour
McClean Navel
Sub heading
Sub heading copy
Fruit Colour
Tango Mandarin
Semi-commercial trial
Sub heading copy
A single application of C4L at 250 mL/ha on 4 May 2023 (8 weeks before harvest) resulted in an 8.2% increase in the proportion of fruit in the top colour group
Citrus Creasing
Palmer and McClean Navel
Sunday's River Valley
3 year trial period
Effect of C4L on nutrient content of fruit
