scholarly journals Diurnal variations in nitrate content of red beets

1984 ◽  
Vol 56 (4) ◽  
pp. 239-243
Author(s):  
Heikki Kallio ◽  
Raila Rousku ◽  
Aarne Salminen
Keyword(s):  
Beta Vulgaris ◽  
Nitrogen Fertilizer ◽  
Nitrification Inhibitor ◽  
Growing Season ◽  
Diurnal Variations ◽  
Nitrate Content ◽  
Experimental Conditions ◽  
Red Beet

The diurnal variations in nitrate content of red beet (Beta vulgaris L. var. conditiva) roots and leaves were observed in cultivations with either no nitrogen fertilizer or with Ca(NO3)2 addition. With less nitrate in the soil the diurnal reduction of nitrate content in the afternoon was greater; on the average 55 % in the leaves and 20 % in the roots of the maximum values in the middle of August. With nitrogen fertilizing (100 kg of nitrogen/ha) the corresponding values were about 15 to 20 %. The amplitude of alteration decreased toward the end of the growing season, as the nitrate content in the leaves in particular was reduced. In our experimental conditions nitrapyrin, a nitrification inhibitor, had no effect on the nitrate content in roots or leaves.

Effect of Long-Term Organic and Mineral Fertilization on the Yield and Quality of Red Beet (Beta vulgaris L.)

2008 ◽  
Vol 68 (1) ◽  
pp. 111-125 ◽  
Author(s):  
Kazimierz Felczyński ◽  
Krystyna Elkner
Keyword(s):  
Beta Vulgaris ◽  
Mineral Nitrogen ◽  
Nitrate Content ◽  
Mineral Fertilization ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Red Beet ◽  
Organic Mineral

Effect of Long-Term Organic and Mineral Fertilization on the Yield and Quality of Red Beet (Beta vulgarisL.)In 2003-2004, an experiment was carried out with two cultivars of red beet using the experimental plots of a long-term static fertilization experiment that was begun in 1922 in the Experimental Field of the Institute of Vegetable Crops in Skierniewice. Under assessment was the response of red beet plants to longterm organic, mineral, and organic-mineral fertilization applied at different rates. The highest marketable yield, of all the fertilization combinations, was obtained in each year of the experiment from the each year treatment with manure alone at 60 t·ha-1. However, the level of red pigments in beet roots from this treatment was low, while that of yellow pigments, and also of nitrates, was high. Fertilization with manure at 60 t·ha-1in combination with mineral nitrogen fertilization at 60 kg N·ha-1resulted in a lower marketable yield compared to the treatment with manure only. The roots from the combined treatment, like those from the treatment with manure alone at 60 t·ha-1, had a low ratio of betanine to vulgaxanthine, and the highest nitrate content of all the fertilization combinations. At lower levels of fertilization with manure (20 and 40 t·ha-1), the additional fertilization with mineral nitrogen increased the marketable yield of red beet roots, but it reduced betanine content in 2003, and increased the level of nitrates in both years, in comparison with the corresponding treatments with manure only. Relatively high marketable yields of well-coloured roots with a high betanine content and a low vulgaxanthine content, and a low level of nitrates, were obtained from the treatment with mineral fertilizers applied at the lowest rates (N - 60, P2O5- 30, K2O - 70 kg·ha-1). However, as the application rates of these fertilizers increased, the marketable yield of beet roots and their betanine content decreased. At the same time, the level of nitrates in the roots of both cultivars increased. The lowest marketable yields, but of well-coloured beet roots with a low nitrate content were obtained from the zero-fertilization control plots and from the treatment with manure alone at 20 t·ha-1.

scholarly journals Changes in quality of selected red beet (Beta vulgaris L.) cultivars during the growing season

2014 ◽  
Vol 26 (2) ◽  
pp. 139-146 ◽  
Author(s):  
Zofia Nizioł-Łukaszewska ◽  
Maria Gawęda
Keyword(s):  
Beta Vulgaris ◽  
Positive Impact ◽  
Soluble Sugars ◽  
Weather Conditions ◽  
Growing Season ◽  
Stages Of Growth ◽  
Growing Seasons ◽  
Red Beet ◽  
Health Related

ABSTRACT Red beet (Beta vulgaris L.) may be consumed at all stages of growth, both in the form of small early vegetable during spring and later, during winter, when stored. Therefore, knowledge of the dynamics of changes in the content of individual components in subsequent stages of growth is very important. The experiment was conducted for two consecutive growing seasons. The study included four cultivars of red beet ‘Boro’ F1, ‘Czerwona Kula’, ‘Nochowski’ and ‘Regulski Cylinder’. The aim of this study was to assess the dynamics of changes of selected components during the growing season. Particular attention was paid to the content of components having a positive impact on the quality of red beet, such as: antioxidant activity, the content of betalain pigments, soluble sugars and dry matter. On the basis of the survey it was demonstrated that the optimal harvest date of red beet roots, with respect to the favorable nutrient and health-related content, falls in the 8th and 11th week of the growing season depending on the weather conditions in a given year. A significant increase in the anti-radical activity, soluble sugars as well as betanin and vulgaxanthin (2009) was observed between the 6th and the 8th and also in the 11th week of the cultivation. A gradual drop in betanin to vulgaxanthin ratio was observed within the following weeks of the vegetation. On the basis of the research conducted we can conclude that the cultivar recommended for consumption is ‘Nochowski’.

scholarly journals Adsorption Studies on Magnetic Nanoparticles Functionalized with Silver to Remove Nitrates from Waters

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1757
Author(s):  
Yesica Vicente-Martínez ◽  
Manuel Caravaca ◽  
Antonio Soto-Meca ◽  
Miguel Ángel Martín-Pereira ◽  
María del Carmen García-Onsurbe
Keyword(s):  
Magnetic Nanoparticles ◽  
Nitrate Content ◽  
Adsorption Efficiency ◽  
Experimental Conditions ◽  
Dependent Behavior ◽  
Before And After ◽  
Naoh Solution ◽  
High Concentrations ◽  
Interference Studies

This paper presents a novel procedure for the treatment of contaminated water with high concentrations of nitrates, which are considered as one of the main causes of the eutrophication phenomena. For this purpose, magnetic nanoparticles functionalized with silver (Fe3O4@AgNPs) were synthesized and used as an adsorbent of nitrates. Experimental conditions, including the pH, adsorbent and adsorbate dose, temperature and contact time, were analyzed to obtain the highest adsorption efficiency for different concentration of nitrates in water. A maximum removal efficiency of 100% was reached for 2, 5, 10 and 50 mg/L of nitrate at pH = 5, room temperature, and 50, 100, 250 and 500 µL of Fe3O4@AgNPs, respectively. The characterization of the adsorbent, before and after adsorption, was performed by energy dispersive X-ray spectroscopy, scanning electron microscopy, Brunauer-Emmett-Teller analysis and Fourier-transform infrared spectroscopy. Nitrates can be desorbed, and the adsorbent can be reused using 500 µL of NaOH solution 0.01 M, remaining unchanged for the first three cycles, and exhibiting 90% adsorption efficiency after three regenerations. A deep study on equilibrium isotherms reveals a pH-dependent behavior, characterized by Langmuir and Freundlich models at pH = 5 and pH = 1, respectively. Thermodynamic studies were consistent with physicochemical adsorption for all experiments but showed a change from endothermic to exothermic behavior as the temperature increases. Interference studies of other ions commonly present in water were carried out, enabling this procedure as very selective for nitrate ions. In addition, the method was applied to real samples of seawater, showing its ability to eliminate the total nitrate content in eutrophized waters.

Normal range of blood colony-forming cells (CFU-C) in humans: Influence of experimental conditions, age, sex, and diurnal variations

1979 ◽  
Vol 39 (4) ◽  
pp. 257-263 ◽  
Author(s):  
A. Ponassi ◽  
L. Morra ◽  
F. Bonanni ◽  
A. Molinari ◽  
G. Gigli ◽  
...  
Keyword(s):  
Diurnal Variations ◽  
Normal Range ◽  
Experimental Conditions

scholarly journals Quanti-Qualitative Response of Swiss Chard (Beta vulgaris L. var. cycla) to Soil Amendment with Biochar-Compost Mixtures

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 307
Author(s):  
Angela Libutti ◽  
Anna Rita Rivelli
Keyword(s):  
Plant Growth ◽  
Beta Vulgaris ◽  
Interactive Effect ◽  
Organic Amendments ◽  
Experimental Conditions ◽  
Total N ◽  
Qualitative Response ◽  
Positive Effects ◽  
Swiss Chard ◽  
Two Factors

In recent years, soil addition with organic amendments, such as biochar and compost, has gained attention as an effective agronomic practice to sustain soil fertility, enhance plant growth and crop yield. Well known are the positive effects of compost on yield of a wide crop varieties, while both positive and negative responses are reported for biochar Therefore, the aim of the study was to verify the effect of biochar mixed with three types of compost on quanti-qualitative response of Swiss chard (Beta vulgaris L. cycla), a leafy green vegetable rich in dietary antioxidants, largely consumed worldwide. A factorial experiment in pots with two factors, including biochar (without biochar and with biochar from vine pruning residues) and compost (without compost, with compost from olive pomace, with vermicompost from cattle manure, and with compost from cattle anaerobic digestate), was setup. Two growth cycles were considered, and a set of quantitative (height of plants, number, area and fresh weight of leaves) and qualitative parameters (carotenoids, chlorophyll, total N, and NO3−content of leaves) were analyzed. Biochar decreased plant growth and NO3− leaf content; on the contrary, it increased total N leaf content, while compost improved all the considered parameters. The interactive effect of biochar and compost was evident only on total N and NO3− leaf content. In our experimental conditions, the compost showed to be the best option to improve Swiss chard growth and increase the content of phytopigments, while the biochar-compost mixtures did not produce the expected effect.

scholarly journals Value addition of red beet ( Beta vulgaris L.) by‐products: Emulsion formation and stability

2018 ◽  
Vol 54 (3) ◽  
pp. 619-625 ◽  
Author(s):  
Theo Ralla ◽  
Hanna Salminen ◽  
Timo Wolfangel ◽  
Matthias Edelmann ◽  
Corinna Dawid ◽  
...  
Keyword(s):  
Beta Vulgaris ◽  
Value Addition ◽  
Red Beet ◽  
By Products

Effects of Elevated Atmospheric CO2 and its Interaction with Temperature and Nitrogen on Yield of Barley (Hordeum vulgare L.): A Meta-analysis

2021 ◽  
Author(s):  
Mekides Woldegiorgis Gardi ◽  
Bettina I.G Haussmann ◽  
Waqas Ahmed Malik ◽  
Petra Högy
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Meta Analysis ◽  
N Fertilization ◽  
Additional Stress ◽  
Hordeum Vulgare L ◽  
Grain Number ◽  
Experimental Conditions ◽  
Elevated Atmospheric Co2 ◽  
The Mean

Abstract AimsThe general aim of this meta-analysis is to synthesize and summarise the mean response of barley yield variables to elevated CO2 (eCO2) and its interaction with temperature and N fertilization. Methods The present study quantitatively synthesized the response of barley to eCO2 and its interaction with temperature, and Nitrogen (N). A meta-analysis procedure was used to analyse five yield variables of barley extracted from 76 articles to determine the effect size and the magnitude in relation to eCO2 and its interaction with temperature and N. Results CO2 enrichment increased biomass (23.8%), grain number (24.8%), grain yield (27.4%), and thousand-grain weight (5.6%). However, responses to eCO2 were affected by genotype, additional stress, and experimental conditions. In comparison, genotype “Anakin” shows the highest response of biomass (47.1%), while “Genebank accessions” had a higher grain number (46.1%) and grain yield (57.1%) under eCO2. The maximal enhancement of barley yield was observed when plants grow under a combination of eCO2 and higher nitrogen fertilizer (>100 kg ha-1). Nevertheless, biomass (-12%), and grain yield (-17%) responses were lower when eCO2 is combined with high temperature (>25 °C). It was further noted the response of barley yield to eCO2 was higher in the growth chamber than in other CO2 exposure methods. Moreover, comparing pot-rooted versus field-rooted barley plants, a higher response of biomass and grain yield was observed for pot-rooted plants. ConclusionsOverall, results suggest that the maximal barley production under eCO2 will be obtained in combination with high nitrogen fertilizer and optimal temperature (21-25 °C).

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