Luxury Absorption of Potassium by Potato Plants

Kang, Wenqin; Fan, Mingshou; Ma, Zhong; Shi, Xiaohua; Zheng, Hongli

doi:10.1007/s12230-014-9386-8

Cited by 49 publications

(37 citation statements)

References 8 publications

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“…Fernandes et al (2011) found that the K removal by potatoes cultivated in soil with a high exchangeable K was 101 kg ha -1 , i.e., values close to those obtained in the three site-years of this study. However, as reported by Karam et al (2011) and Kang et al (2014), in this study, there was also luxury consumption of K by the potato crop since the increases in K removal by the tubers were higher than the observed increases in the tuber yields. Additionally, the increase in K removal up to the estimated K rates was greater than those that yielded the maximum tuber yields, even in the site-year with a low soil test K (Fig.…”

Section: Tuber Yield and K Removalsupporting

confidence: 69%

“…• K fertilization increases the tuber firmness, but reduces the soluble solids and protein concentration. P otato (Solanum tuberosum L.) is an important staple crop in most parts of the world and has high nutrient requirements Kang et al, 2014), among which potassium (K) is the nutrient that is most absorbed and removed by the crop Kang et al, 2014;Li et al, 2015). An increase in the amount of K taken up by the potato plant increases the total biomass and tuber yield to a certain extent, with subsequent luxury consumption of K by plants (Karam et al, 2011;Kang et al, 2014).…”

Section: Core Ideasmentioning

confidence: 99%

“…Tubers demand the majority of K; however, fertilization based on the requirement of K per ton of tubers produced is not valid because of the luxury uptake of this nutrient (Kang et al, 2014;Shi et al, 2019). Traditionally, fertilization adjustments according to the concentration of exchangeable K in soil (soil test K) are recommended (Westermann et al, 1994b;Kang et al, 2014). In soils with high exchangeable K concentrations, tuber yield responses to the application of K fertilizers may be negative (Pauletti and Menarin, 2004;Nava et al, 2007;Li et al, 2015).…”

Section: Core Ideasmentioning

confidence: 99%

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Potassium Fertilization for Fresh Market Potato Production in Tropical Soils

et al. 2019

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Potassium (K) is the most taken up and removed nutrient by potato (Solanum tuberosum L.), and has a great influence on tuber yield and quality. This study was performed to evaluate the effects of three rates (100, 200, and 400 kg K2O ha−1) and two timings of application of K (single application at planting furrow and split application of 50% at planting furrow plus 50% at hilling), as potassium chloride, as well as a control (without K application) on the plant nutrition and tuber yield and quality of potato ‘Agata’ grown in tropical clay soils. The split application of K fertilizer had little influence on plant nutrition and tuber yield and quality. The influence of K fertilization on increasing K and reducing Ca and Mg concentrations in the leaf was more significant in soil with low exchangeable K. In this soil, the maximum tuber yield (33.6 Mg ha−1; 107% higher than the control) was obtained with an estimated rate of 325 kg K2O ha−1, while in the soils with medium and high exchangeable K, the tuber yield was increased between 22 and 34% and only up to a rate of 200 kg K2O ha−1. The critical leaf K concentration to reach 95% of the maximum yield was 29.3 g K kg−1, but there was an extreme increase in the tuber yield even with K rates that provided leaf K concentrations above this limit. Potassium fertilization increased the firmness and reduced soluble solids and protein in tubers. Core Ideas K is the nutrient that is most taken up and removed by the potato crop. In clay soils, the splitting of K fertilization has little influence on potato tuber yield and quality. K fertilization increases tuber yield more, and up to higher rates in soil with low K concentration. K fertilization increases the tuber firmness, but reduces the soluble solids and protein concentration.

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Section: Tuber Yield and K Removalsupporting

confidence: 69%

Section: Core Ideasmentioning

confidence: 99%

Section: Core Ideasmentioning

confidence: 99%

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Potassium Fertilization for Fresh Market Potato Production in Tropical Soils

et al. 2019

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“…Corresponding to high amounts of K removal and K concentrations of tubers, recommendations for K fertilisation are usually quite high (Panique et al 1997). However, there are several studies which could not find a positive effect of K fertilisation on tuber yield (Roberts and Beaton 1988;Kang et al 2014;Koch et al 2019b). This might be attributed to an already sufficient K status of the respective soils.…”

Section: Potassiummentioning

confidence: 99%

The Importance of Nutrient Management for Potato Production Part I: Plant Nutrition and Yield

et al. 2019

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As part of a successful agronomic strategy, adequate nutrient management of the potato crop is essential throughout the whole growth period. In this review, the importance of balanced fertilisation for potato yield formation and yield security is addressed by taking advantage of the results of field trials and existing literature. The most important roles of the macronutrients nitrogen, phosphorous, potassium, magnesium, calcium and sulphur in the plant and their importance for yield formation in potato are reviewed. Fertilisation practices in potato production are discussed. Due to their various functions in plant metabolism, the impact of plant nutrients on potato yield is complex. Therefore, interactions with abiotic and biotic factors, for instance interactions between two different plant nutrients in the soil and the plant, are taken into account.

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“…Entretanto, o teor de potássio residual incrementou apenas a classe de tubérculos comerciais, composta principalmente pela classe II (Tabela 2). O incremento do número de tubérculos de batata, com a fertilização potássica, ocorre principalmente em solo com baixo teor de K (Kavvadias et al, 2012;Kang et al, 2014), como confirmado no presente trabalho em solo com teor inicial de K de 38 mg dm -3 , valor interpretado como baixo para a batata.…”

Section: Resultsunclassified

Adubação potássica e seu efeito residual sobre a produtividade e a qualidade de tubérculos de batata

Silva

Fontes

2016

Pesq. agropec. bras.

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Resumo: O objetivo deste trabalho foi determinar a dose ótima de K e seu efeito residual sobre a produtividade máxima e a qualidade de tubérculos de batata (Solanum tuberosum). O experimento 1 foi realizado em solo com baixo teor de K (38 mg dm-3), em delineamento experimental de blocos ao acaso, com quatro repetições, cujos tratamentos constituíram-se de cinco doses de K - 0, 110, 220, 440 e 880 kg ha-1 de K2O -, na forma de KCl, aplicados em pré-plantio ao sulco. O experimento 2 foi realizado no mesmo local, com o teor residual do fertilizante aplicado no experimento 1. A fertilização potássica e seu efeito residual influenciaram significativamente o número, a produtividade e a matéria seca dos tubérculos. No entanto, altas doses de K reduziram o teor de matéria seca e a gravidade específica dos tubérculos. O teor residual de K não influenciou todos os componentes de produtividade. A dose de máxima eficiência econômica foi 393,5 kg ha-1 de K2O, que propiciou a máxima produtividade de tubérculos comerciais de 36,2 Mg ha-1, no experimento 1, e de 19,6 Mg ha-1, no experimento 2.

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Luxury Absorption of Potassium by Potato Plants

Cited by 49 publications

References 8 publications

Potassium Fertilization for Fresh Market Potato Production in Tropical Soils

Potassium Fertilization for Fresh Market Potato Production in Tropical Soils

The Importance of Nutrient Management for Potato Production Part I: Plant Nutrition and Yield

Adubação potássica e seu efeito residual sobre a produtividade e a qualidade de tubérculos de batata

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