scholarly journals Digestate is equal or a better alternative to mineral fertilization of kohlrabi

Author(s):  
Tomáš Lošák ◽  
Ludmila Musilová ◽  
Andrea Zatloukalová ◽  
Monika Szostková ◽  
Jaroslav Hlušek ◽  
...  

In a one-year vegetation pot experiment, we compared the effect of digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Segura F1. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The N dose was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the P, K and Mg doses corresponded to those supplied in the digestate treatment (3). The weight of single kohlrabi bulbs in the unfertilised control was significantly lower (36.2%) than in the urea treatment (100%) and the other fertilised treatments. After application of digestate (treatment 3) and mineral fertilisers (treatment 4), the weight of single bulbs significantly increased by 36.2 and 33.6%, respectively, compared with the urea treatment (2). The content of ascorbic acid did not differ between the fertilised treatments (282–301 mg/kg), but was significantly lower than in the unfertilised control (334 mg/kg). There were significant differences between all fertilised treatments (2, 3, 4) in bulb nitrate content (745, 187, 462 mg NO3−/kg fresh matter, respectively). After digestate application the content decreased significantly, to 187 mg NO3−/kg fresh matter. The soil Nmin content after harvest varied between 4.19–5.79 mg/kg in all fertilised treatments and the N-NH4+ form prevailed over N-NO3− only in the digestate treatment (3.45/2.34 mg/kg). We recommend the use of digestate to kohlrabi as it results in comparable or better yield and qualitative parameters of kohlrabi compared with mineral fertilizers.

Author(s):  
Tomáš Lošák ◽  
Jaroslav Hlušek ◽  
Hana Bělíková ◽  
Monika Vítězová ◽  
Tomáš Vítěz ◽  
...  

In a one-year vegetation pot experiment, we compared the effect of digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Moravia. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple superphosphate, KCl, MgSO4. The N dose was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the P, K and Mg doses corresponded to those supplied in the digestate treatment (3). The weight of single kohlrabi bulbs in the unfertilised control was significantly lower (39.2%) than in the urea treatment (100%) and the other fertilised treatments. After application of digestate (treatment 3) and mineral fertilisers (treatment 4), the weight of single bulbs significantly increased by 18.6 and 25.2%, respectively, compared with the urea treatment (2). The content of ascorbic acid did not differ among the all four treatments (274–291 mg/kg). There were significant differences between all fertilised treatments (2, 3, 4) in bulb nitrate content (792, 327, 776 mg NO3−/kg fresh matter, respectively). The content of nitrates was the lowest in the unfertilised treatment – 135 mg NO3−/kg fresh matter. After digestate application the nitrate content decreased significantly, to 327 mg NO3−/kg fresh matter. We recommend the use of digestate to kohlrabi as it results in comparable or better yield and qualitative parameters of kohlrabi compared with mineral fertilizers.


Author(s):  
Tomáš Lošák ◽  
Andrea Zatloukalová ◽  
Monika Szostková ◽  
Jaroslav Hlušek ◽  
Jiří Fryč ◽  
...  

In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The rate of N was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the rate of P, K and Mg corresponded with the rate of these nutrients in the digestate treatment (3). The weight of single bulbs of the control unfertilised treatment were significantly the lowest (22.9%), as well as the nitrate (6.0%) and ascorbic acid content (66.2%) compared to the urea treatment (100%) and the other fertilised treatments. After the application of the digestate (treatment 3) and mineral fertilisers (treatment 4) the weight of single bulbs significantly increased by 27.9 and 29.2%, respectively, compared to the urea treatment (2). The content of ascorbic acid in the fertilised treatments did not differ (772–789 mg/kg) but it increased significantly compared to the unfertilised treatment (511 mg/kg). There were no significant differences between the two treatments fertilised with mineral fertilisers in the bulb nitrate content (678 and 641 mg NO3−/kg fresh matter, respectively). After digestate application their contents decreased significantly to 228 mg NO3−/kg fresh matter. Digestate treatment resulted in comparable or better yield and qualitative parameters compared to treatment with mineral fertilisers.


Author(s):  
Tomáš Lošák ◽  
Tereza Zlámalová ◽  
Monika Vítězová ◽  
Jaroslav Hlušek ◽  
Petr Škarpa ◽  
...  

In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas plant and mineral fertilisers on yield and quality parameters of kohlrabi, variety Moravia. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The rate of N was the same in treatments 2–4, i.e. 1.5 g N/pot. In treatment 4 the rate of P, K and Mg corresponded with the rate of these nutrients in the digestate treatment (3). The inhibited growth of kohlrabi after the application of NPKMg (4) was obviously the consequence of early planting after the application of fertilisers (5 days) and of the salinity of the small content of soil in the pot and resulted in the lowest weight of single bulbs (69 g), followed by the unfertilised control treatment (75 g). After the application of the digestate (treatment 3) the weight of single bulbs significantly increased (126 g) compared to the urea treatment (101 g) and all the other treatments. The content of ascorbic acid in the fertilised treatments did not differ (441–458 mg/kg) but it increased significantly compared to the unfertilised treatment (398 mg/kg). There were significant differences among all the fertilised treatments (1–2–3–4) in the bulb nitrate content (346–1,147–815–1,091 mg NO3−/kg fresh matter, respectively). After digestate application their content decreased significantly to 815 mg NO3−/kg fresh matter. Digestate treatment resulted in comparable or better yields and qualitative parameters compared to all the other treatments.


2013 ◽  
pp. 67-69
Author(s):  
Mariann Móré ◽  
Zita Burján ◽  
Zoltán Győri ◽  
Péter Sipos

The yield and quality of wheat are mainly determined by the plant production system, thus we studied the effect of mineral fertilization. The field trials were set up in 1983 at the Látókép Research Institute of the University of Debrecen. We examined effect of different Nfertilizer doses (60 kg ha-1 N/P/K, 120 kg ha-1 N/P/K) on Lupus, Mv Toldi and GK Csillag's protein properties in 2012. During the tests, three quality parameters were determined: wet gluten content (%), wet gluten spread (mm/h) and gluten index (%). In the experiment the effect of different doses of N-fertilizers significantly influenced by the wet gluten content and gluten index of Lupus.


2019 ◽  
Vol 18 (1) ◽  
pp. 197-205 ◽  
Author(s):  
Piotr Kiczorowski

The study was conducted in 2015–2017 to assess the influence of rootstocks on the growth and fruiting of apple trees of cv.‘Šampion’ cultivated on rootstocks M26, P2. M9, and P22 with the following treatments: mineral fertilization (NPK), nano-concentrations of elements (Fe, Co, Al, Mg, Mn, Ni, Ag), natural chicken manure fertiliser, humus, microbial product, plant amino acids, and stillage yeasts. ‘Šampion’ apple trees grew vigorously on rootstocks M26 and P2 when humus and microbiological biostimulants were applied, especially in terms of the shoot diameter and TCSA. The best fruit yield and quality parameters were obtained in apple trees growing on rootstocks M9 and M26 fertilised with microbiological biostimulants and formulations containing plant amino acids. Apples with the highest concentration of nutrients, in particular minerals, were harvested from trees growing on rootstocks M9 and P22 and stimulated with nanoparticle mineral preparations and humus formulations.


2019 ◽  
Vol 17 (3) ◽  
pp. e0903
Author(s):  
Mohyeldein I. Slama ◽  
Alaa E. K. Omar ◽  
Saber S. Bassiony ◽  
Ghoneem M. Ghoneem

Aim of study: To evaluate the use of compost and natural rocks as partial replacement of mineral fertilizers in ‘Flame’ seedless grape vineyards.Area of study: The present work was conducted during three successive seasons (2016, 2017 and 2018), being the first season a preliminary trial on 4-yr old grapes cultivated in two different soil types (sandy and clay) at two different locations, Egypt (Abo Galeb, Giza governorate; EL-Mahala, Gharbia governorate).Material and methods: Treatments were applied as natural raw materials at 20, 40, 60, 80 and 100% out of recommended mineral NPK rate. The mineral fertilizers used were ammonium sulfate (21.6% N), calcium super phosphate (15.5% P2O5) and potassium sulfate (48% K2O). The natural rocks used were phosphate rock (22.0% P2O5) and Feldspar (10.12% K2O). Yield and fruit characteristics and leaf mineral content were determined.Main results: Using compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPK enhanced leaf nutrients content and gave the highest yield and cluster weight. This mix also improved berries physical and chemical characteristics. There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice. The most pronounced effect was related to using 60% mineral fertilization + 40% organic and natural rocks in both vineyard locations.Research highlights: We can reduce the recommended doses of mineral NPK by about 40%, reducing then the soil pollution.


2008 ◽  
Vol 68 (1) ◽  
pp. 111-125 ◽  
Author(s):  
Kazimierz Felczyński ◽  
Krystyna Elkner

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.


Author(s):  
Bedriye Bilir ◽  
Kadir Saltalı

Nitrogen (N) and boron (B) fertilization is important for yield and quality in sugar beet cultivation. However, excess nitrogen (N) fertilizers cause negative effects on quality. The increase in nitrate content in sugar beet leaves used as animal feed is one of the quality parameters negatively affected. The aim of this study is to examine the effect of different doses of nitrogen, boron fertilization and time on nitrate accumulation in sugar beet leaves. The study was carried out on a field with a B content of 0.56 mg kg-1 in Elbistan district of Kahramanmaraş province. Experiment random blocks were set up in 3 replications according to factorial trial design. Five different doses of N (0, 9, 18, 27 and 36 kg N da-1) and 4 different doses of B (0, 200, 400, 600 g B da-1) were used in the experiment. Leaf samples were taken in July, August, September and October. According to the results of the research, as the applied N dose increased, the nitrate content of sugar beet leaves increased at statistically significant level. The effect of boron application on nitrate of leaves was not found to be significant. The decrease in nitrate content of sugar beet leaves towards the harvest period was found to be statistically significant. As a result, using sugar beet leaves as animal feed after harvest does not pose a risk to animals in terms of nitrate.


Author(s):  
Adriana MOREA ◽  
Ioan ROTAR ◽  
Roxana VIDICAN ◽  
Florin PACURAR

Village Garda de Sus is located in Aries basin and includes grasslands its perimeter with semi-important areas that are particularly important because they have many functions. Maintain these pastures in the cultural landscape is a topical issue nationally and beyond. Although a phytodiversity high yield and quality obtained are not satisfactory. Improving these parameters can be done through interventions in the system, such as fertilization, which can increase productivity and maintaining a high phytodiversity, and improve crop quality. Our research objective is to monitor the effect of mineral fertilizers on productivity and meadows of Festuca rubra phytodiversity after a period of three years.


2020 ◽  
Vol 16 (5) ◽  
pp. 71-79
Author(s):  
A. A. Mnatsakanyan ◽  
G. V. Chuvarleeva

The article presents the studies carried out in 2017 and 2018 in the central zone of the Krasnodar Territory on the basis of the Agrotechnological Department of the FSBSI «National Center for Grain named after P.P. Lukyanenko». The purpose of the research was to study the dose and frequency of application of mineral fertilizers with a complex of NanoSilicon microelements, stimulating growth and development of corn and, ultimately, its yield and quality of the obtained products. Two year studies revealed the effectiveness of the positive effect of the studied drug on grain corn in all studied options. It was noted that at low or high doses of its application, a number of indicators that determine the structure of the crop and, ultimately, yield, decreased. It was found that foliar treatments increased the growing season of corn for a day. The introduction of the preparation promoted the formation of taller plants, the height of which varied from 201,3 to 212,4 cm, while in the control it was 184 cm (milk ripeness phase). In the same phase the plants had a large biological weight, which in the control was 1010,1 g/plant, and when the preparation was applied, it was 90,2–275,5 g/plant higher. Ultimately, mineral fertilization with the NanoSilicon microelement in all studied dosages had a positive effect on the corn yield, the maximum value, which was obtained when it was applied at doses of 40/75/75 (seed treatment with NanoSilicon with a rate of 40 g/ha + application by seedlings at a dose of 75 g/ha + in the phase of 7–8 leaves 75 g/ha) and 40/100/100 (seed treatment – 40 g/ha + seedlings – 100 g/ha + in the phase of 7–8 leaves – 100 g/ha), which amounted to 59,9 and 59,8 c/ha, respectively.


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