Pears
Pear Spray Programme
Effect of C4L on Nutrient Content of fruit
Bud Fertility
Celina
Langkloof - 2022
Semi-commercial trial
The C4L programme significantly increased bud fertility in Celina pears by 25% compared to the untreated control.
C4L application dosage &timing:
-
500 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Fruit Size Distribution
Celina
Langkloof - 2023
Semi-commercial trial
The C4L programme shifted fruit distribution from smaller sizes to medium and larger categories, enhancing overall fruit size.
C4L application dosage & timing:
-
500 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Fruit Colour
Celina
Langkloof - 2023
Semi-commercial trial
The C4L programme enhanced colour development, increasing the percentage of fruit in the top colour group while reducing the proportion in the least developed group.
C4L application dosage & timing:
-
50 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Fruit Set & Retention
Four different cultivars
Four different growing regions
The percentage of fruit thinned was measured against the untreated control, with the C4L programme showing an average 35% increase in fruit number compared to the untreated control.
C4L application dosage & timing:
-
500 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Maturity Parameters
Four different cultivars
The C4L programme produced firmer fruit, while °Brix levels remained unchanged on average compared to the untreated control.
Fruit Finish: Russeting
Packham's Triumph
Ceres
Commercial trial
The C4L programme resulted in 89% of fruit classified as Class 1, compared to 32% in the untreated control, demonstrating a significant reduction in russeting incidence.
C4L application dosage & timing:
-
500 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Fruit Finish: Russeting
Early BC
Paarl
Commercial Trial
The C4L programme resulted in 83% of fruit classified as Class 1, compared to 69% in the untreated control, while also reducing the portion of fruit in the most severe russeting group.
This clearly demonstrates C4L's effectiveness in improving fruit finish.
C4L application dosage & timing:
-
500 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Scab Infection
Early BC
Paarl
Commercial trial
The C4L programme reduced scab incidence and severity, resulting in 25.7% more Class 1 fruit when evaluated based solely on scab lesions.
C4L application dosage & timing:
-
500 mL/ha
-
70% Petal drop
-
+ 28 days later
-
+ 28 days later
Colour Enhancement
Rosemary
Paarl - 2013
Commercial trial
The C4L programme noticeably enhanced colour development in Rosemary pears.
3 x C4L applications at 500 mL/ha
Colour Enhancement
Rosemary
Paarl - 2013
Commercial trial
The C4L programme increased the number of fruit in the top colour group by 10% compared to the untreated control.
Adding Calcium (Ca) to C4L further enhanced colour development, resulting in a 14% additional increase in the top colour group.
3 x C4L applications at 500 mL/ha