Why use foliar fertilizers?
  • To minimise environmental impact. The usage efficiency of foliar applied nutrients is higher than soil applied nutrients. This can be important in environmentally sensitive areas and areas prone to leaching.
  • To prevent or cure transient nutrient deficiency when nutrient demand exceeds root uptake rate. This may be due to poor root development or rapid crop growth.
  • To by-pass soil conditions which limit nutrient availability and to thereby accelerate plant response. These conditions include adverse soil pH, moisture, texture and aeration.
  • To target nutrients directly rather than rely on indirect transportation through the soil and roots. Examples of this are in preventing nutrient deficiencies of specific organs, e.g. fruit
  • To supply nutrients to plants with deep root systems, when soil surface application of fertilisers such as P, K, Ca, Mg and trace elements is not effective.


When is the best time to apply OMEX foliar fertilizers?
  • In the early morning or evening when humidity is high
  • To crops that are actively growing

Avoid :    

  •  Application to crops under severe stress from drought, frost or herbicide damage
  •  Application in hot, dry or windy conditions.


What is the best way to prepare the spray mixture?
  • Always shake the container before opening
  • Part fill the spray tank with clean water.
  • Add the required amount of OMEX Foliar Fertiliser, this will dissolve completely with agitation.
  • Half fill spray tank.
  • Crop protection products may be added to spray tank, pre-mix prior to addition.
  • Fill the spray tank under agitation.


What application rates should I use?

Application rates are shown in litres per hectare (l/ha), combined with a recommended water rate per hectare.  When using the product on areas less than 1 hectare (10,000m­­­2) a suggested dilution rate is given in ml of product per 100L water.


How do I know which nutrients my wastewater treatment plant is lacking?

OMEX fully-equipped laboratories can analyse samples taken from treatment plants. OMEX is able to test for low levels of Nitrogen and Phosphorus, metals, CODs (Chemical Oxygen Demand), solids, suspended solids and VFAs speciation (Volatile Fatty Acids).


Which samples should be sent to the laboratory for analysis?

In order for OMEX to carry out a complete analysis a sample of influent, a sample from the aerobic reactor and a sample of the final discharge effluent are needed.

For an anaerobic system a sample of influent, bio-sludge and effluent is required. Usually 200 ml of each is sufficient, along with details of any treatment problems.


Why do anaerobic digesters need trace elements?

Most digester feedstock lacks in essential elements such as copper, iron and selenium which are essential for the biological health and efficiency of anaerobic treatment plants. OMEX provides its range of trace element additives for digesters in a form which is fully bioavailable.

OMEX has a proven track record in the optimisation of anaerobic digesters and biogas plants worldwide, supplemented with full laboratory back up. Addition of necessary trace elements results in a quantifiable increase in biogas volume, an increase in biogas quality (methane content increases) and increased digester stability.


How do I know how much product I need to dose?

OMEX products have a standard daily dose rate which is adopted in the initial start-up phase. From there a plants performance is strictly monitored by OMEX and the dose rate will be adjusted accordingly.


Do you provide equipment to dose your products?

OMEX supplies, commissions and installs dosing systems for dosing sodium and calcium nitrate solutions for septicity control and also for magnesium hydroxide solutions. The standard dosing unit is 2,500 Litre capacity but sizes range from 1,350 up to 10,000 Litres.