Potato tuber greening risk is associated with tuber nitrogen content
journal contributionposted on 2023-05-20, 14:52 authored by Tanios, S, Robert TeggRobert Tegg, Alieta EylesAlieta Eyles, Thangavel, T, Calum WilsonCalum Wilson
Tuber greening is one of the major causes of quality loss in the potato industry, however, the impact of nitrogen in-field fertilisation on this visual defect remains unknown. Two field experiments, one in Tasmania with final N treatment rates of 40, 100 and 190 kg N ha-1 for Nicola and 35, 95 and 185 Kg N ha-1 for Maranca, and another in South Australia with N rates of 100, 200 and 300 kg ha-1 for Maranca, showed a positive linear relationship (R2 = 0.99, 0.86 and 0.90, respectively) between tuber N content and tuber greening, as determined by chlorophyll content. However, increased N fertilisation rates did not directly translate to increased tuber N content, with responses appearing to be variety specific. We conclude that tuber N content is a risk factor associated with tuber greening, but the manipulation of tuber N content through N fertilisation rate is not straightforward and may depend on variety and location.
Publication titleAmerican Journal of Potato Research
Department/SchoolTasmanian Institute of Agriculture (TIA)
PublisherPotato Assoc Amer
Place of publicationUniv Maine, 5715 Coburn Hall, Rm 6, Orono, USA, Me, 04469-5715
Rights statementCopyright The Potato Association of America 2020. This is a post-peer-review, pre-copyedit version of an article published in American Journal of Potato Research. The final authenticated version is available online at: