Rate and timing of nitrogen fertilizer application on potato ‘FL1867’. Part I: Plant nitrogen uptake and soil nitrogen availability

Zotarelli, Lincoln; Rens, Libby R.; Cantliffe, Daniel J.; Stoffella, Peter J.; Gergela, Doug; Burhans, Dana

doi:10.1016/j.fcr.2015.08.007

Cited by 52 publications

(36 citation statements)

References 26 publications

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“…Nitrogen uptake in the present study was slightly higher and ranged between 0.8 and 1.2 kg N per t FM. Zotarelli et al reported an N uptake in potato tubers between 90 to 148 kg ha −1 at different fertilization levels without any significant differences [59]. These results are similar to findings in the present study, where the N uptake was lower, but no differences between the fertilization levels could be detected.…”

Section: Nitrogen Concentration and Uptakesupporting

confidence: 92%

“…The total sugar content of all treatments in the present study were below or equal to the normal range of 70-80% of DM [13,45]. Compared to the sugar content of Jerusalem artichoke (71% of DM), chicory (74% of DM), and artichoke (78-80% of DM), the sugar content in the present study were comparatively lower [33,35,59]. It has been reported that an increase of N leads to a decrease of sugar content for sugar beet and artichoke [19,35,60].…”

Section: Sugar Compositioncontrasting

confidence: 65%

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Impact of Nitrogen Fertilization on Tuber Yield, Sugar Composition and Nitrogen Uptake of Two Yacon (Smallanthus sonchifolius Poepp. & Endl.) Genotypes

et al. 2019

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The tuberous root crop, yacon, is native to the Andean region and contains high amountsof fructooligosaccharides (FOS) with up to 70% of dry matter. Due to FOS, consumption of tubersmay have health-promoting effects. However, regarding the overall cultivation system, norecommendations exist for farmers on nitrogen fertilization and nitrogen (N) uptake of yacon.Therefore, three different N fertilization levels (0, 40, and 80 kg N ha−1) and two genotypes (brownshelled(BG) and red-shelled (RG)) were examined in a two-year field experiment regarding theirtuber yield, sugar composition, and nitrogen uptake. Tuber yields increased with increasingfertilization level and were highest for B80 and R80 (50 and 67 t FM ha−1), while significantdifferences between the genotypes existed. Sugar and the amount of FOS slightly decreased withincreasing N fertilization level, and ranged between 36% and 73% and 30% and 58% of dry matter,respectively. An overall decreasing amount of FOS led to a slight increase in the amount of FOSwith a higher degree of polymerization. Regarding the N-use efficiency of tubers and the total plant,an N fertilization level of 40 kg N ha−1 seems to favor tuber yield.

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Section: Nitrogen Concentration and Uptakesupporting

confidence: 92%

Section: Sugar Compositioncontrasting

confidence: 65%

Impact of Nitrogen Fertilization on Tuber Yield, Sugar Composition and Nitrogen Uptake of Two Yacon (Smallanthus sonchifolius Poepp. & Endl.) Genotypes

et al. 2019

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“…Potato (Solanum tuberosum L.) growth is characterized by a high demand for nitrogen fertilizer due to its necessity for proper plant and tuber development [1][2][3]. However, due to a shallow (approximately 30 cm) and inefficient root system, applied water and fertilizer is at risk of leaching below the root zone [4,5]. Although potatoes have a relatively high value, fertilization costs might negatively affect their profitability [6,7].…”

Section: Introductionmentioning

confidence: 99%

Water and Nitrogen Productivity of Potato Growth in Desert Areas under Low-Discharge Drip Irrigation

Trifonov

Lazarovitch

Arye

2018

Water

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Narrow profit margins, resource conservation issues and environmental concerns are the main driving forces to improve fertilizer uptake, especially for potatoes. Potatoes are a high value crop with a shallow, inefficient root system and high fertilizer rate requirements. Of all essential nutrients, nitrogen (N) is often limiting to potato production. A major concern in potato production is to minimize N leaching from the root zone. Therefore, the main objective of this study was to examine the potato crop characteristics under drip irrigation with low-discharge (0.6 L h−1) and to determine the optimal combination of irrigation (40, 60, 80, and 100%) and fertigation (0, 50, and 100%) doses. In this study, the 80% (438.6 mm) irrigation dose and a 50% (50 mg N L−1) fertigation dose (W80%F50%) showed that these doses are sufficient for optimal potato yield (about 40 ton ha−1) in conjunction with water and fertilizer savings. Moreover, this treatment did not exhibit any qualitative changes in the potato tuber compared to the 100% treatments. When considering water productivity and yield, one may select a harsher irrigation regime if the available agricultural soils are not a limiting factor. Thus, higher yields can be obtained with lower irrigation and fertigation doses and a larger area.

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“…Urea release from the tablet model was also too slow since only 0.0027 g urea per day in 0.04 m 2 or 6.75 x 10 -2 g.m -2 .day -1 in water. As comparison, urea uptake rate by potato plant was 3.7 x 10 -2 g.m -2 .day -1 which is very close to urea release core-shell model tablet [14]. The polymer coated urea (PCU) and the epoxy resin coating of sulphur coated urea (PSCU) has N release rate of 22.4% and 17.2% respectively in 30 days during cotton planting [15].…”

Section: Urea Releasementioning

confidence: 72%

Preparation and characterization natural rubber-urea-tablets coated by chitosan

Adlim

Fitri

Rahmayani

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Excessive urea leaching causes water pollution and fabricating slow release coated urea is usually performed at high temperature or using synthetic polymers and toxic solvent which might generate environmental pollution. This study aims to formulate "green process" of urea slow release tablets and characterize urea slow release tablets. The formula was composed of rice husk ash, urea, and liquid natural rubber (LNR). Several proportions were studied and characterized based on the stability in water and urea leaching. The immobilizing urea was carried in two models; core-shell and mixed model composite either coating or uncoated with chitosan. The slow release urea tablets were stable in water without decomposition at least 9 days of incubation times depending on LNR content but at least 15 mL of LNR was required to obtain stable tablets. Urea leaching from core-shell tablet was 0.045% and 0.75% for mixed model tablet in 10 days incubation times. Chitosan coating did not affect significantly on urea leaching for core-shell model but it caused urea release faster in mixed model after 12 days incubation times. Low LNR and chitosan coating retarded fungus growth on the urea slow release tablet.

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Rate and timing of nitrogen fertilizer application on potato ‘FL1867’. Part I: Plant nitrogen uptake and soil nitrogen availability

Cited by 52 publications

References 26 publications

Impact of Nitrogen Fertilization on Tuber Yield, Sugar Composition and Nitrogen Uptake of Two Yacon (Smallanthus sonchifolius Poepp. & Endl.) Genotypes

Impact of Nitrogen Fertilization on Tuber Yield, Sugar Composition and Nitrogen Uptake of Two Yacon (Smallanthus sonchifolius Poepp. & Endl.) Genotypes

Water and Nitrogen Productivity of Potato Growth in Desert Areas under Low-Discharge Drip Irrigation

Preparation and characterization natural rubber-urea-tablets coated by chitosan

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