Established orchards
Apply a 0.2% Kelpak solution (200 ml Kelpak per 100 L water) 5 times as a full coverage foliar spray, starting at the beginning of bloom, and repeated 4 times at monthly intervals.
Crop information
Benefits of Kelpak on Macadamias
Scientific trials indicate that macadamia trees treated with Kelpak showed clear advantages with improved tree health, fruit set, as well as quality and total yield increases with an average of 35% more marketable kernels:
Increases tree vigour and leaf growth- Improved fruit set
- Higher fruit number
- Lower rate of fruit drop
- Higher yield per tree
Macadamia trials | South Africa and Malawi
Macadamia yield increase above control
A recent independent trial conducted using Kelpak on 20 year old Pahala Macadamias in South Africa revealed some interesting results. Starting applications at 20% flowering, 159 trees were randomly selected and treated either 3 times at a 0.3% dilution or 5 times at a 0.2% dilution. While both treatments offered increased yields the slightly reduced dilution applied more often produced significantly better results. This was particularly evident in terms of nut set and overall yield. What was of further interest; it was an off-season for this area and the trial orchard had a lower yield when compared to the local average of 1.8t/ha. Although the orchard was a poor performer, with Kelpak applied 3 times at 0.3% the yield improved 96% above the control. Spraying Kelpak 5 times at a 0.2% dilution resulted in a massive 172% yield increase. These results highlight the potential of Kelpak as a tool to improve alternate bearing. The ability of Kelpak to improve yield in a poor year is not only evident in macadamias but has been observed in other crops like pecan nuts, wall nuts, avocados and cherries to mention a few.
0 % - 23 %
- +13%Limpopo (SA)2 trials
- +14%Mpumalanga (SA)3 trials
- +23%Malawi6 trials
| Category | Macadamia yield increase above control |
|---|---|
| Limpopo (SA) (2 trials) | +13% |
| Mpumalanga (SA) (3 trials) | +14% |
| Malawi (6 trials) | +23% |
Macadamia trial results
Macadamia nut drop | Mpumalanga, South Africa
Summary of 3 years of trials. Dropped nuts per orchard floor surface area.
0 - 23.6
- Control: 11.4a5 × @ 0.2%: 8.6b3 × @ 0.3%: 9.9bOctober nut drop
- Control: 13a5 × @ 0.2%: 10.1b3 × @ 0.3%: 11.7bNovember nut drop
- Control: 23.6a5 × @ 0.2%: 18.1b · −23%3 × @ 0.3%: 20.5b · −13%Total nut drop
| Category | Control | 5 × @ 0.2% | 3 × @ 0.3% |
|---|---|---|---|
| October nut drop | 11.4a | 8.6b | 9.9b |
| November nut drop | 13a | 10.1b | 11.7b |
| Total nut drop | 23.6a | 18.1b · −23% | 20.5b · −13% |
Recommended application rates
New orchards
Apply a 0.5% Kelpak solution (500 ml Kelpak per 100 L water) as a soil drench around the plant directly after transplant. A volume of 0.5 to 1 L of the mix per plant can be applied. Another option is to soak the nursery bag with the solution before planting.
Dilution
Kelpak should never be dilute more than 1:500 (0.2%); the pH of the final spray mix should not be higher than 7, and sufficiently buffered to remain below 7 until application has been completed. The use of a surfactant is recommended when applying Kelpak.
Promoting Growth
Plant Biostimulant.
Kelpak Plant biostimulant improves root development, flowering, fruit set, fruit retention and crop resilience by using nature's own code to elicit powerful responses in crops that improve quality and yield. Available in multiple formats for farms of all sizes.
