AgroDex Fe – Iron Chelate Fertiliser for Correcting Iron Deficiency in Crops

Supports chlorophyll formation, photosynthesis, and plant growth
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AgroDex Fe – Iron Chelate for Crop Nutrition

Supports chlorophyll production, photosynthesis, and plant vitality across diverse crops

AgroDex Fe (Iron) is a naturally complexed trace element formulated with a unique blend of organic and amino acids. Its low molecular weight chelation ensures rapid uptake and effective assimilation in plant tissues. Designed to correct and prevent iron deficiencies, AgroDex Fe supports critical plant functions such as chlorophyll manufacture, respiration, oxidation, and overall crop productivity across broadacre, horticultural, turf, and viticulture applications.

Key Features

  • Formulated with organic and amino acids for enhanced nutrient uptake.
  • Corrects and prevents iron deficiencies in a wide variety of crops and soils.
  • Supports photosynthesis, chlorophyll production, and plant respiration.
  • Available in multiple sizes: 5 L, 20 L, 200 L, and 1000 L.
  • Compatible with foliar, irrigation, and ground applications.

Technical Specifications

Component % w/v (AUST.) % w/w (INT.)
Nitrogen (as Amino Acids) 0.5 0.4
Sulphur (as Sulphate) 2.9 2.5
Iron (as Sulphate) 5 4.3
Biostimulants (as Organic & Amino Acids) 10 8.7
 
Characteristic Value
Colour Dark Green
Specific Gravity 1.13 – 1.17
pH 2 – 3
 

Application Rates

Crop/Use Rate / ha Dilution Application Timing
Broadacre, Cotton 1 – 3 L 1:50 Early flowering and seed set
Vegetables 0.5 – 2 L 1:100 As required
Stonefruit, Pome 1 – 2 L 1:100 First spray on leaf emergence and early flowering
Citrus 2 – 3 L 1:100 Apply at pre-flowering
Subtropicals 1 – 3 L 1:200 Bud development and early flush
Grape Vines 1 – 3 L 1:100 Minimum of two pre-flowering sprays
Turf 200 mL/100 m² 1:100 As required to correct deficiencies
Volume Rate 500 mL/100 L - Equivalent to 0.2% product (300 mL per 100 L water)
 

Why Choose This Product

AgroDex Fe provides growers with an effective solution for managing iron deficiencies across a broad spectrum of crops. Its organic and amino acid complex ensures superior mobility within the plant, leading to faster correction of chlorosis and improved crop growth. With flexible application options and proven compatibility with nutritional programs, AgroDex Fe integrates seamlessly into professional crop management systems.

Frequently Asked Question

How does AgroDex Fe improve crop performance in iron-deficient soils?

Iron deficiency can significantly impair plant growth, leading to yellowing leaves (chlorosis), reduced photosynthesis, and lower yields. AgroDex Fe addresses these challenges by:

  • Rapid correction of deficiencies – Its low molecular weight chelation ensures fast uptake and assimilation into plant tissues.
  • Improved chlorophyll production – Iron is essential for chlorophyll synthesis, enabling stronger photosynthetic activity and greener, healthier foliage.
  • Enhanced crop resilience – By supporting respiration and oxidation, AgroDex Fe strengthens overall plant metabolism, making crops more resistant to stress.
  • Flexible use across crops – Suitable for broadacre, vegetables, fruit trees, vines, turf, and subtropical crops.
  • Compatibility with IPM and nutritional programs – Can be integrated with foliar, irrigation, or soil applications, and enhanced when used with AgroBest Spraytech Oil or Agro Chelate for better uptake and rain fastness.

By incorporating AgroDex Fe into a balanced nutrition strategy, growers can ensure sustained plant health, reduce the risk of long-term nutrient deficiencies, and protect overall yield and quality.

Product Features 
  • Iron chelate formulated with organic and amino acids
  • Corrects and prevents iron deficiencies in many crops
  • Improves chlorophyll production and photosynthesis
  • Enhances plant respiration and metabolism
  • Available in 5L, 20L, 200L, and 1000L sizes
  • Compatible with foliar, irrigation, and soil applications
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File Title File Description Type Section
Agrodex_Fe_2022.pdf AgroDex Fe AgroDex Fe (Iron) is a highly available naturally complexed element, formulated with a range of organic and amino acids ensuring a highly available and readily assimilated low molecular weight chelation. Catalogue Document

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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Understanding Olive Leaf Tip Dieback: Causes, Diagnosis, and Management

Discover how to diagnose and manage olive leaf tip dieback, a common issue caused by nutrient deficiencies, salinity, or environmental stress. Learn expert strategies for restoring tree health through balanced nutrition, soil and water management, and effective disease prevention — backed by The Olive Centre’s professional resources and products.
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