Effects of nitrogen, phosphorus and potassium fertilizer treatments on weight loss and changes in chemical composition of potato tubers stored at 4°C

Kolbe, Hartmut; Müller, K.; Olteanu, Gheorghe; Gorea, T.

doi:10.1007/bf02358074

Cited by 27 publications

(21 citation statements)

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“…1, no interaction between fertilization and storage in terms of tuber sugars accumulation during storage was established. In contrast, Kolbe et al (1995) found that glucose and fructose accumulation throughout storage was increased by high N fertilizer rates when compared with no N fertilization. It is suggested that the relatively low N supply and/or comparatively small differentiation between treatments in the fertilization trial (Haase et al (2007a) may be the reason for the non-significant interaction between crop N nutrition and storage.…”

Section: Discussionmentioning

confidence: 74%

“…Roe et al (1990) quantified the role of reducing sugars and amino acids, and their experiments revealed that around 90% of the variation could be accounted for by variation in the sugars alone. Several studies gave evidence that high N application rates (>150 kg N ha −1 ) can considerably affect (increase or decrease) reducing sugars concentration (Swiniarski and Ladenberger 1970;Stricker 1975;Roe et al 1990;Kolbe et al 1995). Data on soil mineralized N at crop emergence (Haase et al 2007a, b) indicate that in organic potato cropping a comparatively high supply of available N will usually not be achieved.…”

Section: Discussionmentioning

confidence: 97%

“…Kolbe et al (1995) showed that tubers from plants receiving high N have a relatively low DM concentration after storage at 4°C as compared to after harvest. In contrast, no significant interaction between N supply (fertilization in Exp.…”

Section: Discussionmentioning

confidence: 98%

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Suitability of Organic Potatoes for Industrial Processing: Effect of Agronomical Measures on Selected Quality Parameters at Harvest and after Storage

et al. 2007

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Three factorial field experiments were conducted in two consecutive years (2003 and 2004) on two sites in order to examine the impact of preceding crop, presprouting, N and K fertilization and cultivar on quality attributes of organically grown potatoes destined for processing into French fries or crisps. Tuber dry matter (DM) concentration, glucose and fructose concentrations, as well as the colour of crisps and the quality score of French fries, were assessed at harvest and after a 4-month storage period. Results suggest that tubers from organic potato cropping may be expected to have sufficiently high tuber DM concentrations (>19%) for processing into French fries without impairing the texture of the fries when concentrations exceed 23%. DM concentrations of tubers for crips (cv. Marlen) fell short of the required minimum of 22% when a combined N and K fertilizer was applied. The tuber DM concentration was significantly lower following peas than following a legume-grass/clover ley or cereals (oats or winter wheat), but only in one of two seasons. Pre-sprouting increased tuber DM concentration considerably, especially in the growing season with a high incidence of Phytophthora infestans (+1.2% absolute increase). Tuber DM concentration was significantly higher after storage in two of three experiments (+0.4 and 0.5% absolute increase). Cultivars belonging to the very early and early maturity type showed the largest relative increase in reducing sugars concentrations due to storage, ranging between 300 and 1,100%. The medium-early cv. Agria and medium-late cv. Marena proved to be best suited for processing into French fries under conditions of organic farming, as only minor deviations from the highest quality standards were established at harvest (quality index at 4.3 and 4.1, respectively). A consistently high crisp quality was achieved by the medium-early cv. Marlen, with L-values of 70.8 and 66.7 at harvest and after storage, respectively.Overall, results show that the quality variables were mainly affected by cultivar, season, storage and their interaction. The effect of agronomical measures, such as fertilization, preceding crop and pre-sprouting of seed-tubers, was rather small and their effect on internal tuber quality and quality of fried products may hardly be predictable. The quality standards for tuber raw stock can be accomplished best when adequate cultivars are chosen.

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Section: Discussionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 97%

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Suitability of Organic Potatoes for Industrial Processing: Effect of Agronomical Measures on Selected Quality Parameters at Harvest and after Storage

et al. 2007

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“…Por outro lado, houve efeito quadrático e linear positivo de dose de N sobre o teor de AR para 'Ágata' e 'Monalisa', respectivamente (Figura 2). É relatado decréscimo no teor de AR nos tubérculos com o aumento na fertilização nitrogenada (Kolbe et al, 1995). Por outro lado, Long et al (2004) verificaram que o excesso de N aumentou o teor de AR e a sacarose nos tubérculos.…”

Section: Resultsunclassified

Carboidratos e matéria seca de tubérculos de cultivares de batata influenciados por doses de nitrogênio

et al. 2010

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RESUMONeste trabalho, objetivou-se avaliar o efeito de doses de nitrogênio (N) sobre os teores de carboidratos (açúcares solúveis totais, açúcares redutores e amido), matéria seca e sólidos solúveis totais nos tubérculos de quatro cultivares de batata. Os tubérculos originaram-se de quatro experimentos, realizados simultaneamente no campo, no outono/inverno, na Universidade Federal de Viçosa. Em todos os experimentos, foi utilizado delineamento em blocos casualizados, com quatro repetições. Os tratamentos foram compostos de cinco doses de N (0, 50, 100, 200 e 300 kg ha -1 ) na forma de sulfato de amônio, aplicadas no plantio das cultivares Ágata, Asterix, Atlantic e Monalisa. Foram analisados os teores de matéria seca, açúcares solúveis totais, açúcares redutores, amido e sólidos solúveis totais nos tubérculos, após 30 dias de armazenamento a 5ºC a 80-85% de umidade relativa. Em todas as cultivares, as doses de N apresentaram efeito quadrático sobre o teor de sólidos solúveis totais e não houve efeito sobre os teores de matéria seca e de amido nos tubérculos de batata. Dependendo da cultivar, as doses de N influenciam positivamente, ou não influenciam os teores de açúcares redutores e açúcares solúveis totais nos tubérculos de batata. Termos para indexação:Solanum tuberosum L., adubação nitrogenada, qualidade de tubérculos, açúcares, amido, matéria seca. ABSTRACTThis study aimed to evaluate the effect of nitrogen (N) doses on carbohydrate (total soluble sugars, reducing sugars and starch), dry matter and total soluble solids contents in tuber of four potato cultivars. The tubers originated from four experiments, simultaneously conducted in the field, during fall/winter, at the Federal University of Viçosa. These experiments were set in randomized complete block and four repetitions and we evaluated the effects of five N rates (0, 50, 100, 200, and 300 kg ha -1 ) on Agata, Asterix, Atlantic and Monalisa cultivars. Dry matter, total soluble sugars, reducing sugars, starch, and total soluble solids contents of the tubers were analyzed after a 30-day storage at 5ºC. N rates presented quadratic effects on the total soluble solids and presented no effects on dry matter and starch contents for all cultivars. Depending on the cultivar, N rates had positive effects or did not affect reducing sugars and total soluble sugars contents in the tubers.Index terms: Solanum tuberosum L., fertilization, tuber quality, sugars, starch, dry matter. INTRODUÇÃOA batata (Solanum tuberosum L.) tem importância econômica entre as olerícolas e no mundo é o quarto cultivo alimentar mais importante depois do trigo, arroz e milho (Fontes & Pereira, 2005). Em 2008, a produção brasileira de batata foi de 3.636.419 toneladas, com área plantada de 144.400 hectares, atingindo produtividade de 25,18 t ha -1 . A produtividade mundial em 2007 foi de 16,65 t ha -1 (Agrianual, 2009). O mercado brasileiro é abastecido por cultivares originárias da Holanda, Alemanha e Canadá, como Ágata' Asterix, Atlantic, Monalisa, entre dezenas de outras.A batata é re...

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“…The effect of N and K supply on storage properties of potato tubers was studied intensively (e.g. Kolbe et al 1995), whereas this holds not true for the nutrient Mg. However, in a recent study Wszelaczynska and Poberezny (2011) showed that intermediate Mg doses ranging from 0 to 100 kgMgOha −1 (optimum 60 kg MgO ha −1 ) reduced fresh weight losses during storage for 6 months in two mid-early cultivars.…”

Section: Potato (Solanum Tuberosum L)mentioning

confidence: 99%

The significance of magnesium for crop quality

2013

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Background The quality of agricultural and horticultural products and its modulation by fertilization has increasingly received attention. However, whereas the importance of magnesium (Mg) as an essential plant nutrient is well established, the impact of Mg nutrition on quality parameters has only been rarely addressed. Scope This review aims at evaluating the available knowledge on the influence of Mg on produce quality. A short discussion on the term quality as used in this review is followed by an overview of the various functions of Mg in plant metabolism in relation to quality aspects. Finally, the available literature on Mg-associated effects on crop quality is critically surveyed. The question whether Mg application beyond yield optimum further improves crop quality is specifically addressed. Conclusion Increasing Mg supply on Mg-deficient sites tends to increase the quality of agricultural crops, particularly when the formation of quality traits is dependent on Mg-driven photosynthesis and assimilate translocation within the plant. In fruits and vegetables, ratios of Mg to other nutrients like Ca and K were shown to be a more reliable indicator of the quality response than the Mg status alone. Moreover, it is concluded that Mg doses beyond those required for maximum yield rarely induce a further improvement of produce quality.

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Effects of nitrogen, phosphorus and potassium fertilizer treatments on weight loss and changes in chemical composition of potato tubers stored at 4°C

Cited by 27 publications

References 14 publications

Suitability of Organic Potatoes for Industrial Processing: Effect of Agronomical Measures on Selected Quality Parameters at Harvest and after Storage

Suitability of Organic Potatoes for Industrial Processing: Effect of Agronomical Measures on Selected Quality Parameters at Harvest and after Storage

Carboidratos e matéria seca de tubérculos de cultivares de batata influenciados por doses de nitrogênio

The significance of magnesium for crop quality

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