Potato Review Group





Further information:

Notes on monitoring and modelling



  • to record crop growth and development
  • to compare crops
  • to build up a picture of a typical crop

This helps:

  • management of the current crops
  • planning future crops


  • choose an area typical of the crop
  • take all samples from this area
  • take three samples on each date of sampling

Sample size:

  • 2m2 per sample, e.g. two rows from one bed x 1.09 m for beds on 72″ centres
  • leave an undisturbed bed between beds sampled
  • leave an undisturbed plant between successive samples along a bed


  • number of plants
  • weight of canopy (if interested in the time of maximum canopy)
  • number of tubers >10 mm
  • weight of tubers >10 mm

Frequency of sampling:

  • a minimum of three successive sets of samples is required to calculate rate of tuber bulking
  • sampling should start once the majority of tubers have reached 10 mm
  • take samples every 7 – 14 days

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Further information:

Notes on monitoring and modelling

Modelling and monitoring potato yields 2021 (Use of PRG crop monitoring system; advantages and disadvantages of various potato crop modelling systems)

PRG Crop Monitoring 2020 (Details of performing PRG crop monitoring)

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