Description
As part of your strategy to protect your grain in your silos, fumigation plays a crucial roll.
While aerating the silo, and keeping grain cool – can inhibit insect activity, if grain is cooled down enough, it can not kill them.
ABC Hansen offers a fumigation recirculation system that can be installed with any silo that has either channel or full floor aeration – specifically designed for fumigation with phostoxin type poisons.
For effective fumigation – it is neccesary to introduce the fumigant into the silo, and to keep the poison in the silo, recirculating through the grain for approximately three days.
For this purpose – the fumigation system offered contains the following:
- Upgrade of aeration roof vents to manually closing roof vents
- Increase mastick sealant on sidewall sheets, to improve air tightnes of the silo
- Recirculation fan – mounted to aeration fan transition
- Ducting from recirculation fan to silo roof and connecting pieces
- Set of cover plates for aeration fan inlets
*- Note – the system does not include a pellet dispenser
Fan size and ducting size, is dependant on silo size, and amount of fumigant that needs to be recycled, as well as air pressure requirements of the fan.
The principle of the fumigant recirculating system is that, because phostoxin is lighter than air, it will naturally rise through the grain – and settle in the roof of the silos (assuming the roof vents are closed). The fumigation fan, then sucks the poison laden air from the top of the roof, and pushes it into the bottom of the silo, through the aeration floor. Because the poison is ligher than air, the poison will once again rise through the grain, killing the insects in the silo, and once again settle in the roof where the fan will suck it back down again. This process is run continuously for around 3 days, to ensure that the poison has had time to kill the maximum amount of insects and their eggs, and to allow the poison to reach all the areas in the silo.
