Optimization of irrigation and nitrogen fertilization increases ash salt accumulation and ions absorption of drip-fertigated sugar beet in saline-alkali soils

In Poland, under conditions of the moderate climate and transition between maritime and continental climates, the average rainfall totals of the growing season are in the range of 350–400 mm; however, they are distinguished by great temporal and spatial variability. Climatological studies demonstrate that the drought frequency is approximately 30%. Therefore, under such conditions, irrigation has a supplementary and intervention nature and is applied only when dry periods occur. The aim of this study was to determine the impact of sprinkler irrigation and increased nitrogen fertilization on the yield and quality of sugar beet roots and yield of sugar. The average increase of the yield under irrigation was 18.1 t·ha−1 which constituted a 22.8% increase in the yield. Furthermore, there was a marked tendency of a higher sugar content in the roots of irrigated plants. The absolute, relative, and unit average sugar beet root yield increases obtained under the influence of sprinkler irrigation and the lack of a significant diversity in the sugar content in roots confirm that irrigation contributed to an appropriate pace of plant growth and development. The increased rate of nitrogen fertilization (N2) of 160 kg N·ha−1 plus an additional 40 kg N·ha−1 resulted in the significantly greater root yields compared to the control (N1) (160 kg N·ha−1), i.e., an average of 7.6 t·ha−1 (9%). Based on the crop-water production function, the maximum root yields were obtained for the N1 rate at a total precipitation and irrigation amount of 382 mm, compared with 367 mm for the N2 rate.

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Yield and Quality of Sugar Beet under Boron and Mineral and Bio- Nitrogen Fertilization

Egyptian Academic Journal of Biological Sciences H Botany ◽

10.21608/eajbsh.2018.22720 ◽

2018 ◽

Vol 9 (1) ◽

pp. 39-49

Author(s):

Nadia l El- Safy

Keyword(s):

Sugar Beet ◽

Nitrogen Fertilization ◽

Yield And Quality

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Dynamics of sugar beet root, crown and leaves mass with regard to plant densities and spring nitrogen fertilization

Poljoprivreda ◽

10.18047/poljo.26.1.5 ◽

2020 ◽

Vol 26 (1) ◽

pp. 32-39

Author(s):

Ivana Varga ◽

Zdenko Lončarić ◽

Milan Pospišil ◽

Mirta Rastija ◽

Manda Antunović

Keyword(s):

Sugar Beet ◽

Nitrogen Fertilization ◽

Dry Matter ◽

Field Trials ◽

Dry Matter Accumulation ◽

Mass Ratio ◽

Beet Root ◽

Plant Densities ◽

The Mean ◽

Sugar Beet Root

This study analyzes the dynamics of sugar beet root, crown, and leaves fresh and dry matter (FM and DM, respectively) accumulation per plant and their mass ratio at different plant densities and nitrogen fertilization. The biennial field trials were set as four different planting densities (60,000, 80,000, 100,000 and 140,000 plants ha-1) and three methods of nitrogen application in spring: control – without nitrogen fertilization (N0), presowing only (N1), and presowing with topdressing (N2). Close to the maturation, the mean DM of the whole root, crown, and leaves on September 20, 2014 amounted to 28.8, 7.3 and 4.0 t ha-1, respectively, whereas it amounted to 20.7, 4.1 and 2.3 t ha-1 in 2015, respectively. Moreover, with regard to the plant densities, the highest root DM was at 140,000 and 100,000 (31.6 t ha-1 in 2014 and 22.4 t ha-1 in 2015), compared to the wider plant densities of 80,000 and 60,000 plants ha-1 (22.4 t ha-1 in 2014 and 18.1 t ha-1 in 2015). Nitrogen fertilization positively influenced on dry matter accumulation, but it was different within the years. On September 20, 2014, a presowing fertilization (N1) increased the root DM by 17%, compared to the control, whereas in 2015 the presowing with topdressing (N2) increased the root DM by 30%. The root-to-leaves FM ratio amounted to 1:3.9 on May 30, 2014, whereas it amounted to 1:0.1 on September 20, 2014. The leaves FM was at its largest on June 20, 2015, when the root-to-leaves ratio amounted to 1:1.1, and gradually decreased to 1:0.1 on September 20, 2015.

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The Effect of Growth Activators and Plant Growth-Promoting Rhizobacteria (PGPR) on the Soil Properties, Root Yield, and Technological Quality of Sugar Beet

Agronomy ◽

10.3390/agronomy10091262 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1262

Author(s):

Arkadiusz Artyszak ◽

Dariusz Gozdowski

Keyword(s):

Plant Growth ◽

Sugar Beet ◽

Soil Properties ◽

Nitrogen Fertilization ◽

Plant Growth Promoting Rhizobacteria ◽

Sugar Yield ◽

Mineral Nitrogen ◽

Root Yield ◽

Plant Growth Promoting ◽

Growth Promoting

The strategy “from farm to fork” assumes a reduction in the usage of fertilizers and plant protection products in EU agriculture. The aim of this study, conducted over the years 2017–2019 in several locations in Poland, is to evaluate the application of growth activators with and without plant growth-promoting rhizobacteria to reduce mineral nitrogen fertilization without negative effects on the root yield. We studied the effect of these activators on selected soil properties. The experimental treatments included the application of the growth activators Penergetic (K + P) and Azoter, which contains the bacteria Azotobacter chroococcum, Azospirillum brasilense, and Bacillus megaterium, before sowing or during vegetation. The nitrogen rates were reduced by 30% in comparison to full nitrogen mineral fertilization (control treatment). In selected experiments, the application of Penergetic and Penergetic with Azoter caused a higher content of nitrate nitrogen (N-NO3) and ammonium nitrogen (N-NH4) after the sugar beet harvest as well as higher contents of mineral nitrogen (Nmin), P, K, and Mg in the soil in comparison to the treatment with the full dose of mineral nitrogen fertilization. The obtained results proved that it was possible to reduce the mineral application of nitrogen by 30% without a decrease in the biological and pure sugar yield, and even with an increase in the sugar yield caused by the application of the growth activators Penergetic (K + P) and Azoter.

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Experience with minimum tillage and nitrogen fertilization.

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v18i4.17332 ◽

1970 ◽

Vol 18 (4) ◽

pp. 270-276

Author(s):

L.J.P. Kupers ◽

J. Ellen

Keyword(s):

Sugar Beet ◽

Spring Wheat ◽

Nitrogen Fertilization ◽

Clay Soil ◽

Root Systems ◽

Limited Size ◽

Minimum Tillage ◽

Long Term Experiments

In long-term experiments with spring wheat, potatoes and sugar beet on ploughed or unploughed river clay soil, yield differences and differences in response to fertilizers were tentatively explained in terms of the limited size and activity of the root systems in the unploughed plots. CCT. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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