How World Cup grass is 'injected'
Hybrid pitches, which mix natural grass with man-made fibres, have become standard in English Premiership football.
David Nicholls of Dutch firm Desso - one of the companies that specialise in making this kind of pitch - explained to BBC News how they constructed one for one of the flagship stadiums of the World Cup in Brazil.
Video Journalist: Dougal Shaw
- From the section Business