Results of Sugar Beet Production Depending on the Hybrids Selection and the Number of Fungicide Application

Kristek, Andrija; Kristek, Suzana; Varga, Ivana; Drmić, Zrinka

doi:10.18047/poljo.21.2.3

Cited by 7 publications

(4 citation statements)

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“…The fungicide applications in 2018 had a positive influence on sugar content in all treatments (Table 4). It is in agreement with the results of Kristek et al (2006), who claimed that fungicide application leads to an increase of root yield by 11.07 t/ha (14.8%), sugar content by 1.00% (relative 7.1%) and white sugar yield by 2.08 t/ha (23.0%) in comparison with untreated check. The highest sugar yield was recorded in treatment No.…”

Section: Resultssupporting

confidence: 92%

The Efficacy of Fungicides Against Cercospora beticola in Field Conditions

Hudec,

Mihók,

Roháčik

2023

Agriculture (Pol'nohospodárstvo)

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This study is focused on the evaluation of the efficacy of conventional fungicides against Cercospora leaf spot (CLS) on sugar beet. The results showed that the best protection against CLS was achieved by treatment with kresoxim-methyl + epoxiconazole (T1) and tetraconazole (T2). The second highest fungicide efficacy was detected after treatment with (kresoxim-methyl + epoxiconazole -T1) + difenoconazole -T2, followed by (azoxystrobin + cyproconazole) + difenoconazole, (prochloraz + propiconazole) + tetraconazole, Urtica dioica plant extracts + Salix spp. plant extracts, (trifloxystrobin + cyproconazole) + tetraconazole, and picoxystrobin + tetraconazole. The positive effect of fungicide protection on yield and sugar content was higher in the year with a higher occurrence of CLS. Good CLS management could increase the root yield by up to 19.34%, and sugar yield by up to 23.83% in comparison to the untreated check. The highest sugar yield was achieved in the treatment by (prochloraz + propiconazole) + tetraconazole, followed by (kresoxim-methyl + epoxiconazole) + difenoconazole, (azoxystrobin + cyproconazole) + difenoconazole, (trifloxystrobin + cyproconazole) + tetraconazole, picoxystrobin + tetraconazole, and Urtica dioica plant extracts + Salix spp. plant extracts. The results showed a strong relationship of root yield and sugar yield on fungicide treatment during the vegetation. The occurrence of fungicide resistance in Cercospora beticola population has an important impact on efficacy of applied fungicides in field conditions. The highest economic effectiveness coefficient was achieved at treatment by (prochloraz + propiconazole) + tetraconazole.

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Section: Resultssupporting

confidence: 92%

The Efficacy of Fungicides Against Cercospora beticola in Field Conditions

Hudec,

Mihók,

Roháčik

2023

Agriculture (Pol'nohospodárstvo)

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“…In addition to the achieved yield and quality (especially in 2014), it is assumed that the lack of effect of the fungicide spray was somehow reflected in the final yield in the sugar content of the root. The reduced effect of fungicide was probably due to the loss of strobilurin efficiency and low effectiveness of cyproconazole treatment [44], so the leaves were destroyed in September 2014 and 2015. In a previous study, Varga et al [45] reported that in 2014 the highest leaf fresh weight increment of 70% was determined in June and the decrease of 30% in August.…”

Section: Discussionmentioning

confidence: 99%

Sugar Beet Root Yield and Quality with Leaf Seasonal Dynamics in Relation to Planting Densities and Nitrogen Fertilization

et al. 2021

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This study aimed to analyze the seasonal dynamics of sugar beet leaf and root yield and quality in different plant populations and the nitrogen fertilization rate. The field trials were set as four different planting densities (60,000 to 140,000 plants ha−1) and three different spring nitrogen fertilization rates: no fertilization, pre-sowing (45 kg ha−1 N), and pre-sowing with top dressing (99 kg ha−1 N in 2014 and 85.5 kg ha−1 N in 2015. The changes of leaf growth were done measuring leaf area (LA), leaf area index (LAI), specific leaf area (SLA), and leaf area ratio (LAR). The highest LAI in 2014 was determined on 30 July at 140,000 plants ha−1 (9.35 m2 m−1) and in 2015 on 20 June at 100,000 plants ha−1 (4.83 m2 m−2). In both years, the SLA and LAR was highest at the end of May. In relation to plant density, higher plant densities had on average the highest root yield, sucrose content, and white sugar yield. In both years, pre-sowing with top dressing spring nitrogen fertilization resulted in the highest root (95.0 t ha−1) and white sugar yield (11.4 t ha−1), whereas the highest sucrose content was after pre-sowing fertilization (14.9%).

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“…in our agroecological conditions, which is explained by the differences in root yield and root sugar content between one (69.91 t ha −1 with 15.19%) and three treatments (77.13 t ha −1 with 15.53%). Furthermore, Kristek et al [63] emphasize the selection of fungicide active substances due to the possible appearance of resistant strains of the fungus Cercospora beticola Sacc. Pavl ů and Benešová [64] reported that cercosporin leaf spot is the most serious disease of the sugar beet leaf apparatus and that with a moderate attack, there can be losses in regards to the sugar beet root yield of 10-30%, and sugar content can reduce by 0.2-2.5%.…”

Section: Discussionmentioning

confidence: 99%

Does the Amount of Pre-Sowing Nitrogen Fertilization Affect Sugar Beet Root Yield and Quality of Different Genotypes?

Varga,

Markulj Kulundžić,

Tkalec Kojić

et al. 2024

Nitrogen

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There has always been a specific focus on nitrogen fertilization in sugar beet production due to its important effect on sugar beet root yield and quality. For stable sugar beet growth and satisfactory root yield and quality, balanced N fertilization is crucial. Thus, this study aimed to investigate spring N fertilization in two seasons as the following treatments: N0—control, N1—only pre-sowing fertilization, and N2—pre-sowing with topdressing. Four different genotypes were included in the study (Serenada, Colonia, Fred, and Danton). The experiment was set up in a plain area, belonging to the temperate climate zone in Eastern Croatia (Županja and Vrbanja), with the long-term mean (LTM) (March–October) air temperature around 16 °C and the total precipitation of 515 mm. Pre-sowing N fertilization had a smaller impact on root yield in the year with higher precipitation (31% higher than LTM). Therefore, the average yields with pre-sowing fertilization (N1) and pre-sowing fertilization with top dressing (N2) were very similar and were only 7% higher than those of the control. In a season with less rainfall (29% less than LTM), pre-sowing fertilization with top dressing (N2) had a more pronounced effect on the increase in sugar beet root yield, which was 17% higher compared to that of the control treatment. The sugar beet sucrose content and quality parameters (brei impurities, loss of sugar in molasses, extractable sugar) differed when N fertilization was applied among locations in both seasons. The white sugar yield was the highest at N2 treatment with pre-sowing and topdressing N fertilization. In general, according to the average of all locations and years of research, the Serenada hybrid achieved the highest average root yield (81.1 t ha−1), while Colonia exhibited the highest root sugar content (14.5%) and white sugar yield (9.7 t ha−1).

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Results of Sugar Beet Production Depending on the Hybrids Selection and the Number of Fungicide Application

Cited by 7 publications

References 0 publications

The Efficacy of Fungicides Against Cercospora beticola in Field Conditions

The Efficacy of Fungicides Against Cercospora beticola in Field Conditions

Sugar Beet Root Yield and Quality with Leaf Seasonal Dynamics in Relation to Planting Densities and Nitrogen Fertilization

Does the Amount of Pre-Sowing Nitrogen Fertilization Affect Sugar Beet Root Yield and Quality of Different Genotypes?

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