Research reports on determinacy groups and nitrogen management in potatoes

Links to AHDB research reports on nitrogen (N) use and variety determinacy groups are provided below

Read more information on nitrogen (determinacy) groups of potatoes


1110044 Improving Nitrogen Recommendations for Potatoes Through Estimation of Determinacy of Varieties (2017-2020)

  • protocol to determine nitrogen grouping of new varieties

 3110149017 Review of evidence on the principles of crop nutrient management and nutrition for potatoes (2016)

  • review of published data to inform RB209– the “Fertiliser Manual”

 R405 Improved canopy and N management for the GB potato crop (2008-2011)

  • testing the nitrogen management model (R273)
  • total N uptake, canopy persistence and yield potential
  • N falling into the wheeling is unlikely to be recovered efficiently
  • effects of poor soil conditions (compaction, cloddiness) on the N uptake and yield
  • irrigation and N use efficiency

R273 Improved nitrogen management for potato crops (2006-2008)

  • nitrogen management model
  • crop yield, N uptake and radiation absorption data from 211 experimental or commercial crops in the UK and in the US

 807/228 Evaluation of the soil nitrogen supply (SNS) system - opportunities for further improvements to the nitrogen economy of the GB potato crop (2001-2004)

  • N requirements of varieties grown on differing soil types
  • refers to an old version of RB209