Some aspects of the potash nutrition of the potato

Harrap, F. E. G.

doi:10.1002/jsfa.2740110602

Cited by 16 publications

(3 citation statements)

References 12 publications

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“…Potassium was slightly higher in the apical than in the stem portion of the tuber (30,31). In an earlier review, Harrap (1960) reported that high Cl concentrations decreased reducing sugars while total carbohydrates remained constant. He concluded that overall starch yield was probably related more to the amount of K uptake than to specific effects of Cl on the tuber's metabolism.…”

Section: )mentioning

confidence: 90%

Nitrogen and potassium fertilization of potatoes: Sugars and starch

Westermann¹,

James

Tindall

et al. 1994

American Potato Journal

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Considerable evidence exists that both N and K influence potato (Solanum tuberosum L.) yields and quality. The impact of nutrients on tuber quality parameters under field conditions should be identified so optimum management practices can be utilized. We evaluated the N and K fertilization by Ksources effects on concentrations of nutrients, reducing sugars, sucrose and starch in the stem and apical tuber ends from two irrigated field experiments with the Russet Burbank cultivar. Nitrogen rates of 0, 112, 224 or 336 kg ha-' were combined with selected K rates of 0, 112, 224 or 448 kg ha-' as either KCI or K2SQ4 arranged as an incomplete factorial. A multiple linear regression model was fit to the data and used to predict the response surface for a complete factorial for each K-source. Nitrogen applications increased or decreased reducing sugars in the apical and stem ends, respectively. Potassium decreased reducing sugars in both tuber ends. Sucrose was higher in the apical end than in the stem end but was not appreciably affected by fertilizer treatment. Nitrogen and potassium applications reduced dry matter and starch concentrations in both tuber ends. Potassium had a smaller effect on the apical end when starch was expressed on a dry weight basis, indicating that increased water content was a factor in the K effect. Both N and K concentrations in the tuber ends were negatively related to starch concentrations, but the relationship was different for the apical and stem ends. Tuber Cl concentration indirectly affected starch concentrations in the stem end when KCL was applied. The K fertilization effect on specific gravity depended upon the K concentration in the harvested tuber and was independent of K fertilizer source. These data illustrate the effects of preplant N and K fertilization rates on final tuber quality parameters. Additional studies are needed to further define the effects of nutrient concentrations at different plant growth stages. CompendioExiste considerable evidencia que tanto el N coma el K influencian los rendimientos y calidad de la papa (Solanum tuberosum L. campo, debe ser identificado de modo que pueden utilizarse practicas Optimas de manejo. Se evaluO la fertilizaciOn con N y K por los efectos de las fuentes de K sobre la concentraciem de nutrientes, los aplcares reductores, sucrosa y almidem en los extremos apical y terminal de tuberculos de dos experimentos de campo bajo irrigaciem, con el cultivar Russet Burbank. Se combinaron dosis de 0, 112, 224, o 336 kg ha' de N, con dosis seleccionadas de K de 0,112, 224 o 448 kg ha'', sea comb KC1 o como K2SO4, dispuestas como un factorial incompleto. Se dispuso la information convenientemente en un modelo de regresiOn linear multiple y se le utilizO para pronosticar la superficie de respuesta para un factorial completo para cada fuente de K. Las aplicaciones de N incrementaron o disminuyeron los azikares reductores en los extremos apical y terminal, respectivamente. El K redujo los azficares reductores en ambos extremos del tuberculo....

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Section: )mentioning

confidence: 90%

Nitrogen and potassium fertilization of potatoes: Sugars and starch

Westermann¹,

James

Tindall

et al. 1994

American Potato Journal

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“…Potatoes highly demand K for tuber development [64] and may have unintentionally obtained Ca; considering Ca was abundant in the soil, both crops [Ca] exceeded critical limits, and cation competition between K, Ca, and Mg for plant uptake is well known [46,65]. Intercropping bean and potatoes at both sites where K is fixed to clay particles and organic complexes may have resulted in competition between the two crops for the nutrient and potato roots likely obtained Ca and Mg when attempting to meet its demand for K.…”

Section: Potassium Deficient Alkaline Soils Promote Nutrient Competitmentioning

confidence: 99%

Nutrient Concentrations of Bush Bean (Phaseolus vulgaris L.) and Potato (Solanum tuberosum L.) Cultivated in Subarctic Soils Managed with Intercropping and Willow (Salix spp.) Agroforestry

2017

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Abstract:To ease food insecurities in northern Canada, some remote communities started gardening initiatives to gain more access to locally grown foods. Bush beans (Phaseolus vulgaris L.) and potatoes (Solanum tuberosum L.) were assessed for N, P, K, Mg, and Ca concentrations of foliage as indicators of plant nutrition in a calcareous silty loam soil of northern Ontario James Bay lowlands. Crops were grown in sole cropping and intercropping configurations, with comparisons made between an open field and an agroforestry site enclosed with willow (Salix spp.) trees. Foliage chemical analysis of the sites revealed an abundance of Ca, adequacies for Mg and N, and deficiencies in P and K. Intercropping bean and potato did not show significant crop-crop facilitation for nutrients. The agroforestry site showed to be a superior management practice for the James Bay lowland region, specifically for P. The agroforestry site had significantly greater P for bean plant (p = 0.024) and potato foliage (p = 0.002) compared to the open site. It is suspected that the presence of willows improve plant available P to bean and potatoes by tree root-crop root interactions and microclimate enhancements.

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“…Varis (1970b) totesi sekä typpi-että kalilannoituksen lisäämisen aiheuttavan maun huonontumisen. Sen sijaan Harrap (1960) Laadun arvostelemiseksi määritettiin keskimääräinen ominaispaino ja suoritettiin ominaispainolajitellusta materiaalista maun ja jauhoisuuden arvostelu. Näiden perusteella laskettiin moitteettoman ruokaperunan osuus eri koejäsenissä.…”

unclassified

Typpi- ja kalilannoituksen vaikutus ruokaperunan laatuun

Ellala¹,

Vanhanen²,

Kurkela³

1971

AFSci

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Abstract. The influence of three nitrogen and potassium levels on the specific gravity and cooking quality of the varieties Bintje and Realta in the year 1968 was investigated. In order to find out the influence of two different kinds of soil the potatoes were grown in fine sandy soil rich in organic matter (Mikkeli) and sandy gyttja clay (Vehkalahti). The potatoes were fertilized with 50, 125 and 200 kg N/ha, every rate of nitrogen combined with 100, 200 and 400 kg KjO/ha.Mealiness and flavour were evaluated from the samples fractioned into five specific gravity classes. On the basis of sensory evalutation of the different classes the amount of potatoes of high quality was calculated from all the samples. The mealiness and flavour of the potatoes representing the specific gravity class of highest total weight were considered characteristic to the sample. The specific gravity, darkening after cooking and stability of prepeeled potatoes, were also regarded as a criteria of the quality.The mean specific gravity of both varieties was lowered by nitrogen and potassium fertilizing. Similarly, the characteristic mealiness of the sample and the amount of high quality potatoes decreased with increased fertilizing. However, even the strongest fertilizing did not cause any perceptible off-flavor, although the potatoes of the strongest NK-application were differentiated from those of the weakest NK-application by triangle tests.Nitrogen or potassium fertilizing did not affect the stability of colour of pre-peeled potatoes, when discoloration was controlled once a day during storage.The effect of the variety of soil was stronger than that of fertilizing on the quality of both potato varieties.Perunan lannoituksella päästään varsin huomattaviin sadon lisäyksiin, mutta samalla on todettu lannoituksen vaikuttavan myös sadon laatuun. Lannoituksen aiheuttamia laadun muutoksia on selvitetty paitsi Yhdysvalloissa myös Euroopassa mm. Hollannissa

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Some aspects of the potash nutrition of the potato

Cited by 16 publications

References 12 publications

Nitrogen and potassium fertilization of potatoes: Sugars and starch

Nitrogen and potassium fertilization of potatoes: Sugars and starch

Nutrient Concentrations of Bush Bean (Phaseolus vulgaris L.) and Potato (Solanum tuberosum L.) Cultivated in Subarctic Soils Managed with Intercropping and Willow (Salix spp.) Agroforestry

Typpi- ja kalilannoituksen vaikutus ruokaperunan laatuun

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