Nitrate in potatoes. 1. The effect of fertilization and storage on the nitrate content in 5 genotypes grown in widely separated localities

Gislason, J.; Dahle, Hans Kolbein; Bærug, R.; Roer, L.; Ronsen, K.

doi:10.1007/bf02357645

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…The diff erence between the two localities was statistically conclusive (P < 0.05). Gislason et al (1984) came to a similar conclusion. In his work, he presents that the highest concentrations of nitrates in tubers were established in cooler areas.…”

Section: Nitrate Content In Potato Tuberssupporting

confidence: 52%

The effect of urea with urease inhibitors and urea on yield and nitrate content in potato tubers

Drápal¹,

Jůzl²,

Elzner³

et al. 2013

Acta Univ. Agric. Silvic. Mendelianae Brun.

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DRÁPAL KAREL, JŮZL MIROSLAV, ELZNER PETR, MAREČEK VÍT:The eff ect of urea with urease inhibitors and urea on yield and nitrate content in potato tubers. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2013, LXI, No. 6, pp. 1613-1619 The three-year fi eld trial was established on two localities -Žabčice and Valečov in 2010-2012. Seven variants of nitrogen fertilization in four replications have been involved in this experiment -100% of urea (U), 80% of urea, 60% of urea, 100% of UreaStabil (US), 80% of UreaStabil and 60% of UreaStabil, whilst 100% corresponded to 90 kg N.ha −1 a er subtracting the content of Nmin in the soil, and the control variant without fertilization by mineral nitrogen. The two varieties with diff erent lengths of vegetation periods have been chosen for the experiment -the early variety Karin and the mid-early variety Red Anna. In all cases, samples for the yield and qualitative analyses have been taken according to the phenological phase -the beginning of physiological maturity. The obtained results show that the highest average yield has been achieved in the variant of 100% of urea -40.95 t. ha −1 , the yield of this variant was statistically signifi cantly higher than the yield of the other variants of fertilization (P < 0.05). Variants treated by urea without the urease inhibitor reached an average yield of 37.62 t.ha −1 . However, this yield was not statistically signifi cantly higher when comparing to the urea with the urease inhibitor (P > 0.05). In regard to localities, a relatively high average yield (44.58 t.ha −1 ) has been achieved on a characteristically potato-growing locality Valečov. This yield was statistically signifi cantly higher than the one attained on the Žabčice locality (P < 0.05). In respect to varieties, the mid-early variety Red Anna attained a higher average yield (39.65 t. ha −1 ). Likewise, this yield was statistically signifi cantly higher than the one of the early variety Karin (P < 0.05). The best year was 2012, in which the average yield of 38.73 t.ha −1 was achieved. This yield was statistically signifi cantly higher than the yield of the year 2010 (P < 0.05). As far as nitrates are concerned, the lowest average nitrate content has been found in the control variant -184.1 mg.kg −1 of moisture content. Nevertheless, the diff erences of the nitrate content among all the varieties were statistically inconclusive (P > 0.05). When using the fertilizer consisting of urea without the urease inhibitor, a lower average content of nitrates was found -207.8 mg.kg −1 of moisture content, but there was no statistically signifi cant diff erence in comparison to the urea with the urease inhibitor variants (P > 0.05). In respect to localities, lower average nitrate content was established on the Žabčice locality -177 mg.kg −1 of moisture content. A statistical signifi cance in comparison to the Valečov locality was found (P < 0.05). The mid-early variety Red Anna had a lower average nitrate content -167.7 mg.kg −1 of moisture content. When...

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Section: Nitrate Content In Potato Tuberssupporting

confidence: 52%

The effect of urea with urease inhibitors and urea on yield and nitrate content in potato tubers

Drápal¹,

Jůzl²,

Elzner³

et al. 2013

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…2) was found. The relation of N application rate and tuber NO À 3 content is well described in the literature, [8][9][10] but its significance for human health is still in debate. The relation of N application rate and tuber NO À 3 content is well described in the literature, [8][9][10] but its significance for human health is still in debate.…”

Section: Reprintsmentioning

confidence: 99%

“…While there are some reports on the relationship between nitrogen fertilization and tuber nitrate content, [8][9][10] very little information on the pathways of nitrate into the tubers is available. However, this question is highly interesting, since nitrate is generally considered to be phloemimmobile.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nitrogen Nutrition on Tuber Quality of Potato with Special Reference to the Pathway of Nitrate Transport into Tubers

Lin

Sattelmacher

Kutzmutz

et al. 2004

Journal of Plant Nutrition

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The influence of nitrogen (N) nutrition on tuber quality of potato (Solanum tuberosum L.), i.e., specific gravity, starch, nitrate, and protein content as well as ascorbic acid content was investigated in a pot experiment. As expected, specific gravity and starch content decreased with increasing fertilizer rates. Protein and especially nitrate content were positively related to nitrogen fertilization, while the effect on l-ascorbic acid content was relatively small. Only at the highest N ORDER REPRINTS level, which led to drastic yield depressions (3.8 g N pot À1 ), l-ascorbic acid content was significantly reduced. Since NO À 3 is considered phloem-immobile and xylem transport into the tubers is restricted (because of the tuber's low transpiration rate), the pathway of nitrate translocation into the tubers is unclear. For Ca 2þ , a direct uptake from the soil solution by the tuber surface is well documented. In order to check whether this pathway may also be of importance for NO À 3 , potato plants were cultivated in solution culture. The growing tubers were wrapped with paper tissue soaked with Ca( 15 NO 3 ) 2 -labelled tuber medium, while contact of the tubers with the nonlabeled liquid growth medium was strictly avoided. 15 N-content of tubers was measured on a mass spectrometer. The experiment demonstrated that with high NO À 3 concentration at the tuber surface, up to 40% of total tuber NO À 3 content can be taken up through the tuber skin.

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“…In Germany, for instance, only tubers with less than 200 mg NO 3 kg À1 fresh weight (Santamaria, 2006) are accepted; and in Poland there is a maximum limit of 183 mg NO 3 kg À1 fresh weight (Cieslik and Sikora, 1998). The amount of nitrates in tubers has been shown to vary with the cultivar, maturity of the tubers and their size, type and amount of nitrogen fertiliser, weather, site and storage conditions (Augustin et al, 1977;Bè langer et al, 2002;Gislason et al, 1984;Lachman et al, 2003;Rogozinska et al, 2005;Serio et al, 2004).…”

Section: Introductionmentioning

confidence: 97%

Influence of harvest date on nitrate contents of three potato varieties for off-season production

Ierna¹

2009

Journal of Food Composition and Analysis

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Nitrate in potatoes. 1. The effect of fertilization and storage on the nitrate content in 5 genotypes grown in widely separated localities

Cited by 7 publications

References 9 publications

The effect of urea with urease inhibitors and urea on yield and nitrate content in potato tubers

The effect of urea with urease inhibitors and urea on yield and nitrate content in potato tubers

Influence of Nitrogen Nutrition on Tuber Quality of Potato with Special Reference to the Pathway of Nitrate Transport into Tubers

Influence of harvest date on nitrate contents of three potato varieties for off-season production

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