Oil Palm Biofertilizer: Application Schedule per Planting Phase for Maximum Results

Oil palm biofertilizer is now the top choice for growers looking to sustainably increase productivity, especially on challenging peatlands. With a formula containing superior microorganisms such as Trichoderma harzianum, Azotobacter sp., and Bacillus subtilis, biofertilizer not only enriches the soil but also protects plants from Ganoderma attacks. However, the key to success lies in the correct application schedule according to the oil palm growth phase. This article will guide you step by step.

Why is Biofertilizer Important for Oil Palm on Peatlands?

Peatlands have unique characteristics: low pH, high organic matter content, but poor available nutrients and susceptible to root pathogens like Ganoderma. Conventional chemical fertilizers are often ineffective because nutrients are easily leached and soil microbes are disturbed. This is where the role of biofertilizer becomes crucial.

Biosolution's oil palm biofertilizer formula contains three key microbes:

• Trichoderma harzianum: Natural biocontrol against Ganoderma fungus and also functions as a PGPR (Plant Growth Promoting Rhizobacteria) that stimulates root growth.
• Azotobacter sp.: Free nitrogen-fixing bacteria capable of providing N for oil palm on peatlands without the need for excess urea fertilizer.
• Bacillus subtilis: Phosphate solubilizer and growth hormone producer, also suppresses soil pathogens.

This combination can increase FFB production by up to 10-15%, reduce chemical fertilizer use by 30%, and gradually improve peat soil quality. However, optimal benefits are only achieved if application is done according to the planting phase.

Nursery Phase (0-12 Months): Building a Strong Root Foundation

In the nursery phase, the main goal is to form a healthy and sturdy root system. Biofertilizer application begins in the pre-nursery or main nursery.

Pre-Nursery (0-3 Months)

• Method: Spray or drench on the growing medium in polybags.
• Dosage: 5 ml per liter of water, apply 50 ml per seedling every 2 weeks.
• Benefits: Trichoderma protects seedlings from damping-off, while Azotobacter starts providing nitrogen.

Main Nursery (4-12 Months)

• Method: Drench the weeded circle around the seedling.
• Dosage: 10 ml per tree, every 3 months.
• Time: Morning or late afternoon.
• Note: Ensure the soil is moist before application. On peatlands, add organic matter such as compost to support microbial colonization.

Research shows that oil palm seedlings given biofertilizer from the start have 25% larger root volume and are more resistant to water stress.

Immature Phase (TBM, 1-3 Years): Accelerating Vegetative Growth

In the immature phase, the focus is on accelerating leaf, stem, and root growth so that plants are ready for production. The biofertilizer application schedule needs to be adjusted to the increasing nutrient demand.

TBM 1 (12-24 Months)

• Method: Drench the weeded circle with a radius of 50 cm from the base of the stem.
• Dosage: 15 ml per tree, every 3 months.
• Time: Early rainy season and late rainy season.
• Tips: Combine with low-dose chemical fertilization (50% of standard recommendation) to reduce costs.

TBM 2-3 (24-36 Months)

• Method: Same, but the drench radius is widened to 1 meter.
• Dosage: 20 ml per tree, every 3 months.
• Benefits: Bacillus subtilis helps dissolve phosphate bound in peat, making it available to plants. Trichoderma continues to suppress Ganoderma development.

By the end of the TBM phase, plants treated with biofertilizer typically have 10% higher stem height and 8% larger stem girth compared to controls.

Mature Phase (TM, >3 Years): Increasing FFB Production

When oil palm enters the mature phase, biofertilizer plays a role in maintaining productivity and reducing disease attacks. The application schedule remains every 3 months, but the dosage is adjusted.

Early TM (3-7 Years)

• Method: Drench the weeded circle with a radius of 1.5 meters.
• Dosage: 20 ml per tree, every 3 months.
• Time: Application is done after the main harvest to restore plant condition.
• Results: Increase in fresh fruit bunch (FFB) count by up to 2-3 bunches per tree per year.

Mature TM (>7 Years)

• Method: Same, but ensure the weeded circle is free of weeds.
• Dosage: 20 ml per tree, every 3 months.
• Note: On water-saturated peatlands, reduce the drench water volume to avoid waterlogging. Use 200 ml of water per tree.

Data from partner plantations show that routine biofertilizer application can suppress Ganoderma attacks by up to 50% and increase crude palm oil (CPO) yield by 1-2%.

Tips for Effective Application on Peatlands

Peatlands require special handling for biofertilizer to work optimally:

1. Adjust soil pH: Ideal peat pH is 5.0-6.0. If too acidic (<4.5), apply dolomite lime 2-3 months before the first application.
2. Maintain moisture: Microbes need water to move. Apply when the soil is moist, not waterlogged.
3. Avoid chemical pesticides: Fungicides and bactericides can kill microbes. If unavoidable, allow a minimum 7-day interval.
4. Use organic matter: Mix biofertilizer with compost or manure to accelerate colonization.

By following these tips, biofertilizer effectiveness can be increased by up to 20%.

Conclusion

Oil palm biofertilizer is a long-term investment for sustainable plantations. With the correct application schedule—starting from nursery (5-10 ml/tree every 2 weeks), immature (15-20 ml/tree every 3 months), to mature (20 ml/tree every 3 months)—you can reap the benefits: 10-15% increase in FFB, 30% reduction in chemical fertilizer, and healthier peat soil. For optimal results, always adjust dosage and method to field conditions. If you would like to discuss further or try the Oil Palm Biofertilizer Formula, our team is ready to assist through free consultation on WhatsApp. Feel free to contact us!