Research reports on determinacy groups and nitrogen management in potatoes

Reports

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

Resources

Results from on-farm trials