An analysis of the agronomic, economic and environmental effects of applying N fertilizer to sugarbeet (<i>Beta vulgaris</i>)

Allison, M. F.; Armstrong, Michael J.; Jaggard, K. W.; Todd, A. D.; Milford, G. F. J.

doi:10.1017/s0021859600078709

Cited by 29 publications

(24 citation statements)

References 16 publications

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“…Both sites were characterized by high yield potentials in control, light soil texture (sand > 50 %) and low CEC values. Thus, the detrimental effect of the high N rates could be ascribed to toxic phenomena (Allison et al. 1996).…”

Section: Discussionmentioning

confidence: 99%

Effect of N Fertilization Rate on Sugar Yield and Non‐Sugar Impurities of Sugar Beets (Beta vulgaris) Grown Under Mediterranean Conditions

Tsialtas¹,

Maslaris²

2005

J Agronomy Crop Science

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For three successive growing seasons (1999–2001), a completely randomized block design experiment was established at the surrounding area of each of four sugar beet processing plants of Hellenic Sugar Industry SA, Greece (a total of 12 experiments). Nitrogen was applied at five rates (0, 60, 120, 180 and 240 kg N ha−1) and six replications per rate. Nitrogen fertilization had site‐specific effects on quantitative (fresh root and sugar yields) and qualitative (sucrose content, K, Na, α‐amino N) traits. When data were combined over years and sites, fresh root and sugar yields were maximized at high N rates (330.75 and 295 kg N ha−1 respectively), as derived from quadratic functions fitted to data. In three trials, increased N rates had negative effects on root and sugar yield. These sites were characterized by high yield in control plots, light soil texture (sand > 50 %) and low CEC values. When data were converted into relative values (the ratio of the trait values to the control mean of each experiment), root and sugar yield was found to be maximized at higher N rates (350 and 316 kg N ha−1, respectively). Sucrose content was strongly and linearly reduced by the increased N rates when data were combined but a significant reduction with increasing N rates was found in only two sites. Non‐sugar impurities (K, Na, α‐amino N) were positively related to the increased N rates when data were combined. Sodium and α‐amino N showed to be most affected by N fertilization as positive relationships were found in six and eight of 12 locations, respectively. Increased N supply resulted in higher soil NO3‐N concentrations (0–90 cm depth) at harvest which were related with amino N contents in sugar beet roots (in 1999 and 2001).

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Section: Discussionmentioning

confidence: 99%

Effect of N Fertilization Rate on Sugar Yield and Non‐Sugar Impurities of Sugar Beets (Beta vulgaris) Grown Under Mediterranean Conditions

Tsialtas¹,

Maslaris²

2005

J Agronomy Crop Science

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“…In early growth stages, increasing N supply promotes foliage cover and thereby enhances assimilation (Scott and Jaggard 1993). White sugar yield at final harvest, however, does not respond very distinctly to increasing N supply, as the yield of the storage root is enhanced whereas the sugar concentration of the root is decreased (Allison et al. 1996).…”

Section: Discussionmentioning

confidence: 99%

Changes in N Composition of Sugar Beet Varieties in Response to Increasing N Supply

Hoffmann¹

2005

J Agronomy Crop Science

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The soluble nitrogen (N) components in sugar beet seriously impair sugar recovery. The only N component determined routinely in the sugar factory is amino N (the sum of amino acids in the beet), which is assumed to reflect all the other N components. Amino N is affected by N supply and variety, but only little is known about the other N components such as total soluble N, betaine and nitrate. This study aimed at investigating the effect of N supply on the N composition of sugar beet varieties with special emphasis on N supply by variety interactions. In 2001 and 2002, field trials with four varieties and four N treatments were carried out at six sites in Germany. Storage root yield and the concentrations of sucrose, sodium, amino N, betaine, nitrate and total soluble N in the beet were determined. With increasing N supply, the concentration of amino N increased considerably and that of nitrate slightly, whereas that of betaine remained rather constant. Thus, the N composition of sugar beet changed with increasing N supply and the percentage of amino N of total soluble N increased. Although amino N has the closest correlation with total soluble N, for quality assessment it may overestimate the effect of N supply on other N components. Varieties clearly differed in root yield and quality as well as in all N components. The variety with the lowest amino N had the highest betaine concentration. However, as related to the concentration of total soluble N in the beet, for all varieties amino N as well as betaine showed the same response pattern. This indicates that the N composition of sugar beet is determined by the level of total soluble N, irrespective of variety or N supply. All varieties required the same N supply for obtaining maximum yield or quality. N supply did not affect the ranking of the varieties for all parameters studied, consequently it need not be considered for variety choice.

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“…The amino N concentration, and often as an accompanying ion, the sodium concentration, increases, so root quality decreases (Fig. 6) (Pocock and Armstrong 1990;Bell et al 1992;Allison et al 1996). As no interaction between variety and N application occurs, varieties with a high concentration of amino N or betaine have a relatively higher concentration irrespective of the N availability and environmental conditions (Hoffmann 2005).…”

Section: N Fertiliser Applicationmentioning

confidence: 99%

Root Quality of Sugarbeet

Hoffmann¹

2010

Sugar Tech

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The composition of the sugar beet root affects the recovery of crystalline sugar in the factory considerably. K, Na and amino N are melassigenic and are, therefore, always considered in the assessment of root quality for variety approval, and in some countries also for payment. The development of root quality during the season and the impact of variety, root rots, drought stress, N fertilizer application, defoliation/topping and storage are discussed. A further increase of the sugar concentration in varieties may be restricted by cell turgor and can probably only be achieved with a simultaneous decrease of the concentration of non-sugars. Future needs of the processing industry could change the criteria for quality assessment. It is observed that the alkalinity reserve (ion balance) of the juices gets lower so that soda has to be added. Moreover, long-term storage and the infestation with root rots result in a marked increase of the invert sugar concentration with detrimental consequences for processing. Therefore, quality assessment would probably be improved by considering alkalinity and invert sugar concentration. For the use of sugar beet for biofuel production, the sugar concentration (ethanol) or the organic dry matter (methane) of the roots are important quality criteria.

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An analysis of the agronomic, economic and environmental effects of applying N fertilizer to sugarbeet (Beta vulgaris)

Cited by 29 publications

References 16 publications

Effect of N Fertilization Rate on Sugar Yield and Non‐Sugar Impurities of Sugar Beets (Beta vulgaris) Grown Under Mediterranean Conditions

Effect of N Fertilization Rate on Sugar Yield and Non‐Sugar Impurities of Sugar Beets (Beta vulgaris) Grown Under Mediterranean Conditions

Changes in N Composition of Sugar Beet Varieties in Response to Increasing N Supply

Root Quality of Sugarbeet

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