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Abstract

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.

Item Type:	Article
Authors/Creators:	Tanios, S and Tegg, R and Eyles, A and Thangavel, T and Wilson, CR
Keywords:	chlorophyll, nitrogen fertilisation, potato, tuber greening, tuber nitrogen
Journal or Publication Title:	American Journal of Potato Research
Publisher:	Potato Assoc Amer
ISSN:	1099-209X
DOI / ID Number:	10.1007/s12230-020-09786-0
Copyright Information:	Copyright 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:
Related URLs:	Google Scholar: Tegg, R UTAS Profile: Tegg, R UTAS Profile: Eyles, A Google Scholar: Wilson, CR UTAS Profile: Wilson, CR
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