AgroDex SKO - Silicon and Potassium Fertiliser for Plant Strength and Stress Resistance

Reinforce Plant Structure & Boost Stress Resistance Naturally
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AgroDex SKO - Silicon and Potassium Fertiliser for Crop Strength and Plant Health

Improves structural integrity, stress tolerance, and disease resistance in plants

AgroDex SKO is a concentrated liquid formulation containing silicon and potassium, designed to correct and prevent silicate deficiencies in a wide range of crops and soils. This fully soluble solution ensures nutrients are available for immediate uptake, improving plant response and resilience. Formulated with organic acids and plant proteins, AgroDex SKO enhances cell structure, promotes better turgidity, and strengthens plant tissues against environmental stress and pathogens.

Silicon, while not essential for all plants, plays a significant role in improving plant growth, photosynthesis, and transpiration efficiency. Potassium complements these effects by enhancing metabolism, water regulation, and stress recovery. Together, they contribute to improved yield quality and long-term plant health.

Technical Specifications

Component % w/v % w/w
Potassium (as Silicate) 13 % w/v 11.7 % w/w
Silicon (as Silicate) 20 % w/v 15 % w/w
Biostimulants (as Organic & Amino Acids) 3 % w/v 2.2 % w/w
 
Characteristic Value
Colour Golden Brown
Specific Gravity 1.3 - 1.34
pH 11.6 - 12.4
Sizes Available 20 Litre, 200 Litre, 1000 Litre
 

Application Rates

Crop Type Rate / ha Dilution Application Timing
Avocado 3 - 5 L 1:100 Young trees at early establishment; repeat as necessary
Cotton 1 - 3 L 1:100 Via water injection or furrow spray at planting
Carrots, Celery, Lettuce, Brassica 2 - 3 L 1:100 Apply as a soil drench at transplant or emergence; repeat after 7-10 days
Citrus 5 - 7 L 1:200 Apply at early establishment; treat mature trees during spring and autumn flush
Cucurbits 2 - 3 L 1:100 Apply at 1-2 leaf stage; repeat after 14 days
Onions 2 - 3 L 1:100 Apply 1 week after emergence; repeat every 7-10 days
Potatoes 2 - 3 L 1:100 Apply 1 week after planting; repeat every 10 days
Rice, Maize, Cereals 3 - 5 L 1:100 Apply when leaf area is sufficient for coverage
Strawberries 2 - 3 L 1:200 Apply at early runner stage
Stonefruit / Pome 2.5 - 5 L 1:200 Apply before flowering to improve tree health
Sugar Cane 3 - 5 L 1:100 Apply at planting and repeat after six months
Tomatoes, Capsicum 2 - 3 L 1:100 Apply during growth season
Vines 2 - 3 L 1:300 Apply at establishment and repeat at flowering
Turf 50 mL / 100 m² 1:100 Apply during greens construction or renovation
General Production 2 - 3 L 1:300 Apply at emergence or transplant; repeat every 7-10 days as required
 

Why Choose This Product

AgroDex SKO combines silicon and potassium to provide structural strength and improved stress resistance in plants. It fortifies cell walls, enhances photosynthetic efficiency, and supports plant defense mechanisms against pathogens and environmental stressors. The inclusion of organic acids ensures fast assimilation and superior mobility through both foliar and root systems. AgroDex SKO strengthens crop resilience and supports yield consistency in diverse conditions.

Frequently Asked Question

How does AgroDex SKO improve plant strength and stress tolerance?

Silicon and potassium work together to enhance plant defense, growth, and structure. AgroDex SKO delivers these nutrients in a bioavailable form supported by organic acids and amino acids for faster uptake and improved distribution throughout the plant. Key benefits include:

  • Increased structural strength - Silicon reinforces plant cell walls, improving rigidity and helping plants withstand environmental pressures such as wind and drought.
  • Enhanced disease resistance - Regular application has been shown to reduce foliar and root fungal infections by stimulating natural plant defense responses.
  • Improved water retention - Strengthened cell walls help maintain turgidity, reducing water loss and improving drought tolerance.
  • Better stress adaptation - Silicon improves plant recovery under salinity, heat, and cold stress by supporting antioxidant systems and osmotic balance.
  • Optimised photosynthesis and nutrient flow - Potassium facilitates enzyme activation, carbohydrate transport, and chlorophyll function, resulting in greener, more productive crops.
  • Long-term yield stability - When applied throughout the season, AgroDex SKO enhances overall plant resilience, crop uniformity, and harvest quality.

Growers who use AgroDex SKO consistently report healthier crops with stronger stems, improved leaf colour, and reduced incidence of disease, especially in crops subject to climate and soil stress.

Key Features
  • Concentrated silicon and potassium solution for plant health
  • Corrects and prevents silicate deficiencies in crops and soils
  • Enhances cell wall strength and turgidity
  • Improves drought, salinity, and environmental stress tolerance
  • Reduces root and foliar fungal infections
  • Supports photosynthesis and nutrient transport
  • Contains organic acids and plant proteins for faster uptake
  • Sizes: 20 Litre, 200 Litre, 1000 Litre
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4 Factors In Grove Management To Focus On For Next Olive Harvest

The Grove Management Plan: Essential Areas to Focus On

A successful Grove Management Plan must cover these key areas:

  • Irrigation
  • Nutrition
  • Pruning 
  • Pest and Disease Control

Irrigation

"A grove without an effective irrigation system is unlikely to deliver consistent yields year after year. Many growers still underestimate the water needs of olive trees, and few actually monitor soil moisture levels. This is why so many groves have never achieved a commercial crop."  Marcelo Berlanda Specialist Olive Consultant

Water stress negatively affects flowering, fruit set, oil accumulation (oil production), fruit size (table olives), fruit quality, and overall tree health. However, many growers lack a proper system to monitor soil moisture or manage irrigation effectively. 

Marcelo recommends:

"Growers should inspect soil moisture weekly during spring and summer, and every two weeks in autumn and winter. Use a shovel to dig at least 400mm under the tree canopy to check moisture. If the soil is hard to dig, it’s too dry – even if the canopy shows no visible signs of stress." 

Advanced soil moisture monitoring tools can also provide reliable data on a digital display or computer dashboard. 

For optimal grove health, growers must consistently check soil moisture and prevent water stress.

Nutrition

As discussed previously, taking leaf samples is essential to assess your trees’ nutritional status. This information guides the creation of a fertiliser program, a critical component for boosting or maintaining yields.

Typically, no fertiliser is needed in winter, unless you’re addressing soil amendments. However, some groves have severe nutrient deficiencies requiring fertiliser even in winter. Where proper irrigation systems aren’t in place, growers must broadcast fertiliser before rain to allow rainfall to incorporate nutrients into the soil profile, an inefficient use of resources but often the only option.

When applying fertiliser in these conditions, target the area beneath the canopy and, if possible, cultivate the soil to improve incorporation and reduce product loss.

Olives need four essential nutrients: Nitrogen, Phosphorus, Potassium, and Calcium. Check product labels carefully. As a general guideline, aim for:

  • Nitrogen 15%
  • Phosphorus 5% or less
  • Potassium 10% or less
  • Calcium 2% or less

Pruning

Avoid pruning during the coldest part of winter and when it’s wet or foggy to reduce the risk of bacterial and fungal disease spread.

The main goals of pruning are to remove dead wood, reduce canopy size, restore tree balance, encourage healthy new growth, and increase fruit set in spring.

Tip: After pruning, apply a copper-based spray to protect wounds from infection by fungi and bacteria.

Pest and Disease Control

Pest and disease management is crucial for sustaining yield and tree health. Winter’s colder temperatures reduce insect activity, offering a prime time to tackle pest issues.

Set up a comprehensive Pest and Disease Monitoring Program. During winter, check marked trees (previously affected by pests or diseases) every two weeks; in spring, check weekly. Look under leaves and on new growth for signs like crawlers, yellow spots, black sooty mold, or anything unusual.

Proactive, weekly management is essential for a successful grove.

If you need further assistance, please contact us.


Global Shortage of MAP (Monoammonium Phosphate) & DAP (Diammonium Phosphate)

URGENT FERTILISER SUPPLY UPDATE – MAP & DAP SHORTAGE

Global Shortage of MAP (Monoammonium Phosphate) & DAP (Diammonium Phosphate)

This summer cropping season is facing unprecedented challenges in fertiliser supply. Availability of MAP fertiliser (monoammonium phosphate) and DAP fertiliser (diammonium phosphate) is expected to remain extremely limited worldwide, with serious implications for growers planning their nutrient programs.

Why is Fertiliser Supply Tight

China’s Export Restrictions Continue

Since 2021, China has imposed strict quotas and inspection rules on phosphate fertiliser exports to protect domestic prices and safeguard food security. 

The impact has been dramatic:

  • March 2025 exports: just 13,000 tonnes, compared with 950,000 tonnes in March 2022.
  • Q1 2025 exports: 111,000 tonnes, versus a three-year average of 785,000 tonnes.
China’s internal demand continues to climb due to increased grain production and the rapid growth of the electric vehicle industry, especially in battery manufacturing. Analysts predict that restrictions will remain in place... or even tighten... throughout 2025.

Other Suppliers Cannot Fill the Gap

Although Morocco, Russia, the USA, and Saudi Arabia also produce MAP and DAP, they cannot offset the sharp drop in Chinese exports. 

The result is:

  • Rising global fertiliser prices
  • Longer delivery lead times
  • Stricter supplier allocations
  • Reduced pricing flexibility across the summer cropping season

What This Means for Growers

For olive growers and other professional producers, the impacts are already being felt:

  • Reduced fertiliser availability for summer cropping
  • Higher input costs with delivery delays
  • Less flexibility in nutrient timing and program planning

Looking forward, risks include:
  • Reduced or cancelled fertiliser allocations
  • Possible product unavailability at short notice
  • Last-minute program changes forced by supply shortages

Our Recommendations - Secure Your Supply Now

Do not wait for traditional ordering windows. Place orders immediately and consider forward contracting for next season. Securing current pricing now helps protect your operation against higher costs and potential shortages later.

Optimise Your Nutrient Strategy

  • Review alternative phosphate fertiliser options
  • Adjust application rates where agronomically feasible
  • Consider split applications to maximise nutrient efficiency
  • Explore precision application technologies to reduce overall fertiliser requirements

Rejuvenating An Olive Grove

A new grove owner near Taree, NSW, faces challenges reviving a mature olive grove on heavy clay soil in a high-rainfall region. Here’s a practical guide to restoring soil health, drainage, nutrition, and yield. The grove was abandoned and in need of rejuvenation. See what steps can be considered to bring an olive grove back.
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