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

Signature Magnesium

Active Ingredients g/L


Magnesium Amino Acid Chelate: Mg 50g/L : N 86 c/L : AA 172 g/L

Wilchem Signature is a range of amino acid chelates. Amino acids are bidentate chelants – they form two bonds to the nutrient to form a “chelate ring”. The chelate ring is stronger than a single ionic bond, which protects the nutrient and maintains it in solution. Amino acid chelates increase nutrient uptake efficiency, leading to increase yield and quality.


Wilchem Signature Magnesium is used to correct and prevent magnesium deficiency in a wide range of crops. Signature Magnesium can be applied via fertigation, furrow injection or foliar applications for broadacre, viticultural and horticultural production where magnesium deficiency may occur.

Wilchem Signature Magnesium atomic structure

Directions for use:

Foliar sprays are the most effective way of applying Signature Magnesium however, it is also suitable for fertigation and furrow injection as chelates reduce reactions in the soil solution making the nutrients more available and for a longer period.

Magnesium Deficiency:

Magnesium deficiency occurs mainly in sandy soils with low pH. Cold conditions and applications of potassium can reduce the availability of magnesium. Applications of other positively charge ions can inhibit the uptake of potassium. Areas that have repeated green manure can show symptoms over time. Magnesium deficiency in plants can also led to grass tetany (magnesium deficiency in animals).
Crops that are susceptible to magnesium include vines, fruit trees and vegetables.

Deficiency Symptoms:

  • Symptoms appear first in old leaves (highly mobile)
  • Weak plants
  • Interveinal chlorosis through the middle of older leaves
  • Curling of leaves upward along margins

The Function:

Magnesium is a key element in chlorophyll production leading to increased photosynthesis. Magnesium assists with the utilisation and mobilisation of phosphorus and iron. It is an essential activator of many plant enzymes. It is also important is seed formation and the formation of oils and fats.

Compatibility with Agricultural Chemicals:

Signature Magnesium is compatible with a wide range of agricultural herbicides and pesticides. Check the Compatibility Guide as a reference. Always do a small jar test before preparing a full tank mix.

Other Details:

Liquid fertilizers can be corrosive to metals so flush equipment clean after use. Avoid inhaling fumes. Avoid contact with eyes and skin. Wash thoroughly with soap and water after handling. Protect from frost. Amino acids are an organic substance and over time some slight precipitation may occur. Do not store for extended periods in direct sunlight.

Wilchem Signature Magnesium table