Reducing potassium deficiency by using sodium fertilisation

Abstract Potassium (K) is the most abundant cation in the vast majority of plants. It is required in large quantities which, in an agronomic context, typically necessitates application of K in the form of potash or other K fertilisers. Recently, the price of K fertiliser has risen dramatically, a si...

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Main Authors: Sarah J. Thorne, Frans J. M. Maathuis
Format: Article
Language:English
Published: Springer 2022-11-01
Series:Stress Biology
Subjects:
Online Access:https://doi.org/10.1007/s44154-022-00070-1
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author Sarah J. Thorne
Frans J. M. Maathuis
author_facet Sarah J. Thorne
Frans J. M. Maathuis
author_sort Sarah J. Thorne
collection DOAJ
description Abstract Potassium (K) is the most abundant cation in the vast majority of plants. It is required in large quantities which, in an agronomic context, typically necessitates application of K in the form of potash or other K fertilisers. Recently, the price of K fertiliser has risen dramatically, a situation that is paralleled by increasing K deficiency of soils around the globe. A potential solution to this problem is to reduce crop K fertiliser dependency by replacing it with sodium (Na) fertiliser which carries a much smaller price tag. In this paper we discuss the physiological roles of K and Na and the implications of Na fertilisation for crop cultivation and soil management. By using greenhouse growth assays we show distinct growth promotion after Na fertilisation in wheat, tomato, oilseed and sorghum. Our results also show that up to 60% of tissue K can be substituted by Na without growth penalty. Based on these data, simple economic models suggest that (part) replacement of K fertiliser with Na fertiliser leads to considerable savings.
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spelling doaj.art-4d0541e811b24f0f977a61d572e977d82022-12-22T03:58:07ZengSpringerStress Biology2731-04502022-11-012111010.1007/s44154-022-00070-1Reducing potassium deficiency by using sodium fertilisationSarah J. Thorne0Frans J. M. Maathuis1Department of Biology, University of SheffieldDepartment of Biology, University of YorkAbstract Potassium (K) is the most abundant cation in the vast majority of plants. It is required in large quantities which, in an agronomic context, typically necessitates application of K in the form of potash or other K fertilisers. Recently, the price of K fertiliser has risen dramatically, a situation that is paralleled by increasing K deficiency of soils around the globe. A potential solution to this problem is to reduce crop K fertiliser dependency by replacing it with sodium (Na) fertiliser which carries a much smaller price tag. In this paper we discuss the physiological roles of K and Na and the implications of Na fertilisation for crop cultivation and soil management. By using greenhouse growth assays we show distinct growth promotion after Na fertilisation in wheat, tomato, oilseed and sorghum. Our results also show that up to 60% of tissue K can be substituted by Na without growth penalty. Based on these data, simple economic models suggest that (part) replacement of K fertiliser with Na fertiliser leads to considerable savings.https://doi.org/10.1007/s44154-022-00070-1DeficiencyFertiliserNutrientPotassiumSalinitySodium
spellingShingle Sarah J. Thorne
Frans J. M. Maathuis
Reducing potassium deficiency by using sodium fertilisation
Stress Biology
Deficiency
Fertiliser
Nutrient
Potassium
Salinity
Sodium
title Reducing potassium deficiency by using sodium fertilisation
title_full Reducing potassium deficiency by using sodium fertilisation
title_fullStr Reducing potassium deficiency by using sodium fertilisation
title_full_unstemmed Reducing potassium deficiency by using sodium fertilisation
title_short Reducing potassium deficiency by using sodium fertilisation
title_sort reducing potassium deficiency by using sodium fertilisation
topic Deficiency
Fertiliser
Nutrient
Potassium
Salinity
Sodium
url https://doi.org/10.1007/s44154-022-00070-1
work_keys_str_mv AT sarahjthorne reducingpotassiumdeficiencybyusingsodiumfertilisation
AT fransjmmaathuis reducingpotassiumdeficiencybyusingsodiumfertilisation