Luxury Absorption of Potassium by Potato Plants

Pot and field experiments were conducted to test whether excessive potassium (K) uptake by potato plants occurs under conditions with or without irrigation at different sites. The results from both pot and field experiments showed that potato biomass and tuber yield peaked at a certain level of exte...

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Bibliographic Details
Published in:American journal of potato research 2014-10, Vol.91 (5), p.573-578
Main Authors: Kang, Wenqin, Fan, Mingshou, Ma, Zhong, Shi, Xiaohua, Zheng, Hongli
Format: Article
Language:English
Subjects:
Absorption
Agriculture
biomass
Biomedical and Life Sciences
Brief Communication
crop yield
fertilizers
field experimentation
Field tests
irrigation
Life Sciences
Plant Breeding/Biotechnology
Plant Genetics and Genomics
Plant Pathology
Plant Sciences
potassium
Potatoes
Vegetables
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Summary:Pot and field experiments were conducted to test whether excessive potassium (K) uptake by potato plants occurs under conditions with or without irrigation at different sites. The results from both pot and field experiments showed that potato biomass and tuber yield peaked at a certain level of external K, and did not increase further with additional K supply. However, K absorption by potato plants continued to increase within the range of K used. It was concluded that luxury absorption of K by potato plants occurred with high K availability in the media. This suggests that K fertilizer recommendation based on the index “K requirement per tuber production” may be unreliable, because the optimum crop need varies with production conditions.
ISSN:1099-209X
1874-9380
DOI:10.1007/s12230-014-9386-8