X Ammonium Sulfate Caprolactum Ammonium Sulfate Liquid Bio Team BiopHilm Calibrate Copper Sulfate Full BAC Half BAC K27N Potassium Acetate Liquid Humate 450 Macro Prima Macro Prima Horticulture Manganese Sulfate MC 145:10 Blend Meta Boost Meta Boost Plus MicroN BAC UP MicroN Stubble Prima Trace Recruit Canola WP Recruit Cereals WP Recruit Hort WP Sentinel WG Copper Sentinel WG Manganese Sentinel WG MC Sentinel WG Zinc Sentinel WG ZMC Signature Boron Signature Calcium Signature Copper Signature Iron Signature Magnesium Signature Manganese Signature MC Signature Molybdenum Signature Potassium Signature Zinc Signature ZM Signature ZMC 341 Signature ZMC 431 Signature ZMZ 242 Tracker Mag Zinc Sulfate ZM 68:68 Blend ZMC 100:40:10 Blend ZMC 40:100:10 Blend

Sentinel Range

Wilchem Sentinel is a range of Ethylenediaminetetraacetic acid (EDTA) chelates. EDTA forms sexadentate chelates – they form six bonds to the nutrient to form a “chelate ring”.  As can be seen in the diagram below showing the octahedral structure of EDTA chelating a metal ion. The chelate ring is stronger than a single ionic bond and protects the nutrient and maintains it in solution. EDTA chelates protect the nutrient from interaction with other crop protection products making it the most compatible product on the market. The synthetic EDTA molecule does not provide any additional nutritional benefit, it purely acts as a stable transporter of the micronutrients in solution.

EDTA Structure

Diagram of the octahedral structure of zinc EDTA forming a hexadentate chelate.


Foliar micronutrient applications can enter the plant two ways; via the stoma which is used by the plant for respiration or by direct absorption through the leaf cuticle. EDTA chelates cannot be absorbed directly through the cell membrane. The micronutrient must first be uncoupled from the EDTA molecule either in the rhizosphere (soil applications) or epidermis or palisade cells (foliar applications). It can then be absorbed through the cell exchange process.

Nutrients available in this range include Zinc, Manganese and Copper.

Ag products and Chem for Australia

Wilchem Game Plans

Wilchem Sentinel Zinc Label

Sentinel WG Zinc

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Sentinel Manganese

Sentinel WG Manganese

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Wilchem Sentinel Copper EDTA Chelate Label

Sentinel WG Copper

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Sentinel MC Label

Sentinel WG MC

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Sentinel ZMC label

Sentinel WG ZMC

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