Goal
- Provide oil palms with sufficient boron to produce optimum yields;
- Limit the loss of boron to the environment.
Standard
Boron fertiliser is applied according to the 4R principle: right type, right amount, right place, right time.
Timing
Not during very wet periods.
Frequency
Once per year.
Labour time required
2—4 hours per hectare.
Equipment and materials
- Bucket, bag or wheelbarrow
- Kitchen scales
- Black marker pen
- Cup or small bowl
- Fertiliser
Dosage
Who
Farmers and their families or hired labourers.
How
Boron fertiliser is applied in small quantities and is toxic when applied in too large amounts.
Apply boron fertiliser by following these steps:
| Step 1. | Before application, remove all weeds from the weeded circle. |
| Step 2. | Weigh the amount to be applied in a bowl or cup, using kitchen scales. |
| Step 3. | Mark the bowl / cup at the right amount using a black marker pen. |
| Step 4. | Break any clumps into small pieces before application of fertiliser. |
| Step 5. | Apply boron fertiliser evenly in the weeded circle for palms of all ages. |
Note: Boron fertiliser is mildly toxic, so it is best not to eat, drink or smoke during application and to wash hands immediately after application.
Data recording
Every fertiliser application should be recorded in a logbook as shown in the example below.
| Date | Time | Location | Activity | Input type | Input amount | Input costs | Labour input | Labour costs | |
| People | Hours | ||||||||
| 16/01/13 | Field 3 | Fertiliser: B | Borax | 15 kg | 200000 | 1 | 4 | 40000 | |
Acknowledgements
The material from Applying boron (B) is sourced from Smallholder Oil Palm Handbook and put together by Lotte Suzanne Woittiez (Wageningen Universit) and Haryono Sadikin, Sri Turhina, Hidayat Dani, Tri Purba Dukan, and Hans Smit (SNV) in August 2016. See Module 4: Fertiliser Application for more information.
