Moist grain treatment with Propcorn NC

Popcorn NC is the non-corrosive version of its well-known predecessor Propcorn. Made non-corrosive by a special gaseous ammoniation buffering process, Propcorn NC can be applied to all cereal grains and pulses to safeguard against the formation of yeasts, moulds and mycotoxins during storage for up to 12 months.

Used at the recommended rates (see application tables below), Propcorn NC will prevent the ‘heating up’ of moist feeds, hay and haylage.

Propcorn NC is the safe, non-aggressive, one-stop storage solution for all whole and processed grains and pulses and will allow earlier baling of hay and haylage at higher nutrient value.

Treated grain should be stored in a dry grain store, bin or bunker. Contact with concrete walls should be avoided, as the build-up of condensation at the point of contact can cause an adverse reaction between the alkaline concrete and the acid treated grain. Paint concrete walls with a suitable barrier paint, or line them with good quality plastic sheeting. Contact Kelvin Cave Ltd for advice.

Used correctly, Propcorn NC eliminates the need for wrapping haylage bales, therefore reducing costs and plastic disposal problems.

In independent worldwide tests, livestock fed on Propcorn-treated feeds have shown that it improves milk yields by up to 4%; increases live-weight gain in beef cattle by up to 4%, and improves  feed-conversion efficiency in pigs by up to 6%.

Other benefits of Propcorn NC include:

  • Higher returns per acre
  • Better feed value with fewer digestive problems
  • Less dust for improved palatability
  • Less fumes than straight propionic acids
  • Keeps grain cool, so discouraging mites and weevil
  • More cost-effective than conventional drying
  • Reduces shedding losses
  • Increases energy levels in feeds (Propcorn NC has an energy value of around 1.5 times that of barley)
  • Extends harvest period – crops can be harvested with surface moisture (dew or rain) on the grain
  • Improves straw and hay value – no need to bale wrap
  • Reduces bought-in feed costs
  • Easier storage of processed feed

Application rates for:

High-moisture cereals and grain maize

Whole Grain Propcorn NC litres/tonne
Moisture Content % Preservation Time (months)
1 1-3 3-12
Up to 16 3.80 5.00 6.75
16-18 4.25 5.80 8.00
18-20 5.00 7.25 9.50
20-22 5.80 8.50 10.50
22-24 7.25 10.00 12.00


Rolled Grain Propcorn NC litres/tonne
Moisture Content % Preservation Time (months)
1 1-3 3-12
Up to 16 4.25 5.50 7.50
16-18 4.75 6.50 9.00
18-20 5.50 8.00 10.50
20-22 6.50 9.50 11.75
22-24 8.00 11.00 13.50

High-moisture pulses

Whole Pulses Propcorn NC litres/tonne
Moisture Content % Preservation Time (months)
1 1-3 3-12
Up to 16 4.75 6.25 8.25
16-18 5.25 7.25 10.00
18-20 6.25 9.00 11.75
20-22 7.25 10.50 13.00
22-24 9.00 12.25 15.00

Safety margins (high-moisture cereals, grain maize and pulses).

Increase application rates by 10 to 15% when the following storage conditions apply:

  • when non-cleaned material is preserved.
  • when material is stored at high temperature (>30°C).
  • when material is pneumatically transported.

Hay, haylage and straw

Moisture Content % Propcorn NC litres/tonne
Up to 20 6.00
20-25 8.00

There is no need to wrap bales (25% moisture or less) provided they can be stored under cover. Bales should be left to stand in the open air for a few hours to allow respired moisture to escape before taking into storage.

Propcorn NC non-corrosive preservative

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