Use of solid phase of digestate for production of growing horticultural substrates

Dubský, M.; Chaloupková, Šárka; Kaplan, Lukáš; Vondráčková, Stanislava; Tlustoš, Pavel

doi:10.17221/221/2016-hortsci

Cited by 9 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of the macronutrients, the greatest content was found for calcium in the applied SPD. The contents of macroelements and microelements in the SPD and the LPD coincide with the approaches of Makádi et al [16], Kolář et al [26] and Dubský et al [29]. Analyses of the SPD and LPD confirmed the findings of Makadi et al [28], in which these raw materials possess features suitable for plant nutrition.…”

Section: Resultssupporting

confidence: 86%

“…Möller and Müller present a content of nitrogen in the range of 2.2-3%, a content of phosphorus of 1.9% and a potassium content of 3.6% in the dry matter (DM) of the solid part of the digestate [19]. Due to the chemical composition and physical features, the applied SPD can positively affect biomass yield and soil structure [28,29]. Kolář et al [26] refer to the LPD as a dilute solution containing a wide range of nutrients in a form acceptable to plants.…”

Section: Composition Of Digestatementioning

confidence: 99%

See 1 more Smart Citation

Application of Individual Digestate Forms for the Improvement of Hemp Production

et al. 2021

Self Cite

View full text Add to dashboard Cite

In a two-year vegetation field experiment, the fertilizing effects of by-products from the agricultural biogas plant—a solid phase of digestate (SPD) and a liquid phase of digestate (LPD)—were studied and compared with mineral fertilization (NPK) on the biomass yield, content and nutrient uptake by Cannabis sativa L. plants. Furthermore, the agrochemical properties of the soil were evaluated at the end of the experiment. In all variants of the experiment, a uniform nitrogen dose of 150 kg/ha was applied. The dose of other nutrients corresponded to the fertilizer used. The biggest fertilizing effect, and therefore the greatest hemp biomass yield and nutrient uptake, was demonstrated when combining SPD and LPD fertilization in one treatment. However, the differences were statically insignificant (p ≤ 0.05). The applied amount appeared to be sufficient for the nutrition of hemp plants and was comparable to mineral fertilization. The distribution of nutrients between leaves and stems varied depending on the nutrient monitored. Analyses after the end of the experiment did not show different contents of accessible nutrients in the soil on the studied variants. The content of accessible risk elements in the soil was not affected by the application of the SPD and the LPD. The experiment showed that cannabis plants are able to achieve equivalent biomass yields (8.68 t/ha) using the combination of LPD and SPD by-products from a biogas plan compared to commercial mineral fertilizer (7.43 t/ha). Therefore, we can recommend a split application of LPD and SPD as a suitable alternative to mineral fertilization. Due to prolonged nutrient release from SPD, we can expect a smaller negative environmental impact than current fertilization practices.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Composition Of Digestatementioning

confidence: 99%

Application of Individual Digestate Forms for the Improvement of Hemp Production

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Results of CaCl 2 /DTPA extraction (CAT) are shown in Table 4. It is a method frequently used for determination of available forms of nutrients in substrates (Dubský et al 2019). The acid character of CAT solution, as well as DTPA chelating effects, result in a strong extraction effect of this agent.…”

Section: Resultsmentioning

confidence: 99%

Impact of organic and mineral fertilising on aluminium mobility and extractability in two temperate Cambisols

Balík¹,

Kulhánek²,

Černý³

et al. 2019

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

Different fertilisation systems cause changes in the content of mobile aluminium (Al) forms in the soil as a result of soil pH changes. Long-term stationary fertilisation experiments established in 1996 at 2 sites were evaluated. Experiments consisted of unfertilised control treatment and 6 other treatments, combining mineral fertilisation with the application of farmyard manure, sewage sludge and straw. To record the changes in mobile Al forms, we used 5 extraction procedures with agents: water, CaCl2, KCl, CaCl2/DTPA (CAT) and Mehlich 3 solutions. At treatment nitrogen (N) + straw, topsoil acidification was observed, resulting in the increased content of mobile Al. At treatments with mineral fertilisation (N, NPK), increased content of mobile forms of Al was recorded. Application of cattle manure and sewage sludge helped to stabilise the soil pH and reduce mobile Al forms. The close correlation between the methods determining the exchangeable Al (CaCl2 and KCl solutions) was observed; however, KCl extraction was more favourable in soils of low Al extractability, as the amount of extracted Al was 3–4 times higher. Positive correlations were determined between Al extracted by Mehlich 3 solution and the content of exchangeable Al. The less frequently used CAT method also turned out to be perspective for mobile Al determination. Furthermore, aluminium content determined in Mehlich 3 extract was compared with mobile phosphorus amounts in H2O, CAT and Mehlich 3, respectively. All three investigated phosphorus forms showed significantly negative correlations with Al.

show abstract

“…The macronutrient and micronutrient content of solid digestate depends on the composition of the input raw materials to the fermentation process and the retention time of the raw materials in the fermenter (Abubaker et al, 2012). Due to its chemical composition and physical properties, applied solid digestate can positively influence biomass yield and soil structure (Dubský et al, 2019). Liquid digest can be considered as a diluted substrate solution containing a wide range of nutrients in a form acceptable to plants (Kolář et al, 2010).…”

Section: Mercury (Hg)mentioning

confidence: 99%

Heavy Metal Content in Substrates in Agricultural Biogas Plants

Derehajło,

Tymińska,

Skibko

et al. 2023

Agricultural Engineering

View full text Add to dashboard Cite

The content of heavy metals in soil should be continuously monitored, especially in organic crops. Exceeding the permissible concentrations of these elements may lead not only to inhibition of plant growth but also to ingestion into the organisms of animals that feed on these plants. Heavy metals usually enter the soil via precipitation or manure. There is a noticeable increase in interest in digestate for fields fertilization. Therefore, the authors decided to test the heavy metal content in substrates (slurry and solid input) and digestate. The 15x3 samples tested showed that only trace amounts of heavy metals were present. The study shows that the content of these elements in the digestate is not the sum of the elements supplied to the digester with the substrates. In most of the samples tested, lead concentrations did not exceed 5 mg‧kg−1. The lowest amounts of cadmium (an average of 0.28 mg‧kg−1) were observed in the slurry, and the highest (an average of 0.34 mg‧kg−1) in the solid substrate fed to the digester. Slurry had the lowest mercury and cadmium contents (average 0.012 mg‧kg−1and 5.8 mg‧kg−1). The highest concentration of chromium was registered in the digestate (average 3 mg‧kg−1) and this was on average 0.3 mg‧kg−1 higher than the feedstock and 0.5 mg‧kg−1 than the slurry

show abstract

Use of solid phase of digestate for production of growing horticultural substrates

Cited by 9 publications

References 20 publications

Application of Individual Digestate Forms for the Improvement of Hemp Production

Application of Individual Digestate Forms for the Improvement of Hemp Production

Impact of organic and mineral fertilising on aluminium mobility and extractability in two temperate Cambisols

Heavy Metal Content in Substrates in Agricultural Biogas Plants

Contact Info

Product

Resources

About