Black Grass Burners...
During 2013 and 2014 several trials have taken place looking at the viability of using tractor mounted propane burners for the controlled burning of cereal stubbles to help control black grass.
It has been proven to control the vast majority of seeds on the surface as well as encourage an early chit of weed seeds, which can be sprayed off before drilling.
Please look at the two attached papers for more details:-
For more information contact the team at Thermoweed.