Grass YEN - Pilot studies


The essential idea behind the YEN is that to understand yields, you should regard your crops as converters of solar energy into edible energy, while using water as efficiently as possible. As such, crop performance needs to be analysed accordingly. Following the success of Cereal YEN, and the new Oilseed YEN, other crops are now being introduced to the YEN family. 


In 2017, ADAS is running a pilot Grass YEN, with industry wide involvement. The initial aim is to test the scope for an ongoing YEN designed to identify solutions for the current challenges in the grass growing sector. If you are interested in signing up as either a grower or supporter, please contact


The aims of Grass YEN

  • Gain a better understanding of high quality grass yield formation,

  • Identify factors constraining grass yield

  • Develop innovative solutions for overcoming these yield constraints.

The competition will be judged on the energy yield (MJ of ME per ha) over two cuts of silage. This will be compared against the estimated potential yield for your environment. To ensure the competitors are judged on a fair basis the grass yield will be expressed as a percentage of the potential yield as well as on an absolute basis (MJ/ha).






Competition categories

  • Less than 1 year at time of entry:
    - Grass
  • Between 1 and 3 years at time of entry:
    - Grass
    - Clover mix
  • Older than 3 years at time of entry:
    - Grass
    - Clover mix






Grassland YEN Sponsors


Corporate Sponsors support the network to maintain its activities.  For this, their important role is recognised as often as possible in all YEN publicity, media items, conference presentations, and on this website. 

Corporate sponsors have a key role in steering the evolution of the network and its activities.  They have access to network information, intelligence and discussions to support their own yield enhancement initiatives. 

Corporate members can also make multiple competition entries, and have multiple attendance at the annual YEN conference.  For details contact:




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