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Copy link Smart Fertilization Strategies for Higher Avocado Yields in Mexico
Avocado tropical trees (Persea americana) are known for their sensitivity to soil conditions, nutrient imbalances, and water stress. To achieve consistent yields and high-quality fruit, growers must adopt a nutrition strategy that goes beyond traditional fertilization - one that supports the tree’s development from planting to harvest while improving nutrient use efficiency and soil health.
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Avocado growers in Mexico can boost yield and fruit quality by adopting smarter fertilization strategies that adapt to each growth stage. Combining Controlled Release Fertilizers (CRF) with Polysulphate® ensures balanced nutrition, improved nutrient use efficiency, and healthier soils. From planting to production, this integrated approach helps trees thrive under variable conditions – delivering sustainable, profitable avocado farming.
Tip 1: Build a Strong Foundation at Planting
The first few months after planting are critical for establishing a healthy root system and setting the stage for long-term productivity. Avocados benefit from a balanced nutrient supply that supports early growth and stress resilience.
Why CRF + Polysulphate?
- Controlled Release Fertilizers (CRF) like Agroblen® Starter provide a steady supply of nitrogen, phosphorus, potassium, magnesium, and micronutrients over several months – perfect for young trees with limited root systems.
- Polysulphate complements CRF by delivering calcium, magnesium, and sulfur in a highly soluble, low-chloride form that supports root strength and nutrient balance and with a release pattern stretching over 6-8 weeks.
Together, they create a nutrient-rich microenvironment that encourages root expansion and minimizes leaching losses, which is especially important in sandy soils or regions with heavy rainfall.
| Technology | Analysis | Dose (g/plant) | Nutrients (g/plant/application) | |||||
|---|---|---|---|---|---|---|---|---|
| N | P2O5 | K2O | CaO | MgO | S | |||
| Agroblen Starter | 13-25-5+2.5MgO+TE | 150 | 19.5 | 37.5 | 7.5 | 0 | 3.7 | 6.0 |
| Polysulphate | 0-0-4+17CaO+6MgO+19S | 50 | 0 | 0 | 7 | 8.5 | 1.8 | 9.5 |
| Total | 200 | 19.5 | 37.5 | 14.5 | 8.5 | 5.5 | 15.5 | |
Tip 2: Support Vigorous Growth in Young Trees
Between years 1 and 3, avocado trees shift into a phase of rapid vegetative growth. Nitrogen and potassium are key drivers, while calcium and magnesium support cell division and structural integrity.
Recommended approach:
- Apply CRF blends like Agroblen® 14-11-11 with extended release (8–9 months) to match the tree’s nutrient demand curve.
- Supplement with Polysulphate to maintain a balanced supply of S, K, Mg and Ca and improve nutrient uptake efficiency.
This combination reduces the need for frequent applications and ensures nutrients are available when the tree needs them most.
| Technology | Formula | Dose (g/plant/year) |
|---|---|---|
| Agroblen | 14-11-11+3.5Mg+9S+ME (8-9 M) | 500-1000 |
| Polysulphate | 0-0-14+17CaO+6MgO+19S | 200-500 |
| Total | 700-1400 | |
Tip 3: Optimize Nutrition in Mature Orchards
As trees mature, nutrient requirements increase, especially during flowering, fruit set, and final fruit development. Traditional granular fertilizers often lead to peaks and troughs in nutrient availability, while fertigation alone may not provide sufficient long-term support.
CRF + Polysulphate offers a smarter alternative:
- CRF blends like Agroblen® Balance and Agroblen® Finisher (with high K) deliver tailored NPK ratios for different growth stages.
- Polysulphate enhances calcium and magnesium availability, improves soil structure, and adds K to support fruit quality.
This dual-application strategy simplifies management, reduces nutrient losses, and improves overall crop performance.
| Granule application | Fertilizers | Dose (g/tree) |
|---|---|---|
| 1 | Agroblen Balance 14-11-11+TE (CRF) | 2.0 – 3.0 |
| Polysulphate | 1.0-2.0 | |
| 2 | Agroblen Finisher 14-7-22+ME (CRF) | 2.0 – 3.0 |
| Polysulphate | 1.0-2.0 |
Tip 4: Use Fertigation to Fine-Tune Nutrition
In dry seasons or irrigated systems, fertigation allows for precise nutrient delivery. Water-soluble fertilizers like Agrolution and Nova series can be used to target specific growth stages, while H₂Flo surfactant improves water distribution and root zone penetration.
Combining fertigation with CRF + Polysulphate creates a hybrid fertilization system that balances long-term supply with short-term responsiveness.
Foliar application in an avocado orchard
Why CRF + Polysulphate Is a Game-Changer
This combination addresses the two biggest challenges in avocado nutrition:
- Timing – CRF ensures nutrients are available when the tree needs them, not just when they’re applied.
- Balance – Polysulphate delivers essential secondary nutrients that are often overlooked but critical for root health, nutrient uptake, and fruit quality.
Together, they improve nutrient use efficiency, reduce environmental losses, and support healthier, more resilient avocado trees.
ICL Products for Avocado in Mexico
| ICL Innovative Solutions | Nursery | Planting | Young trees | Adult avocado trees | ||
|---|---|---|---|---|---|---|
| Before flowering | Fruit setting | Fruit growing | ||||
| Granulate fertilizers (soil application) | Agroblen Starter Polysulphate | Agroblen Starter Polysulphate | Agroblen 14-11-11+TE Polysulphate | Agroblen Starter 13-25-6+TE Polysulphate | Polysulphate | Agroblen 14-7-22+TE Polysulphate |
| Fertigation | Agrolution 9-45-15+TE H2Flo | PeKacid Agrolution 20-20-20+TE H2Flo | PeKacid Agrolution 20-20-20 H2Flo | PeKacid Hipeak 0-45-45 H2Flo | PeKacid Hipeak 0-45-45 H2Flo | PeKacid Agrolution pHLow 11-8-36+3CaO+TE H2Flo |
| Foliar | Nutrivant Starter 11-36-18+TE | Nutrivant Balanced 18-24-18+TE | Nutrivant Balanced 18-24-18+TE | Nutrivant PeaK 0-49-32 | Nutrivant PeaK 0-49-32 | Nutrivant Booster 8-16-39+TE |
Conclusions
Avocado nutrition is not a one-size-fits-all formula – it’s a dynamic system that evolves with the tree’s age, environment, and management practices. By integrating CRF, Polysulphate, and precision fertigation, growers can unlock higher yields, better fruit quality, and long-term sustainability. To maximize these benefits, it is essential to align fertilization with the tree’s growth cycle to support key stages like new growth, fruit development, and preparation for dormancy.
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