WATER  ABSORBING  GEOCOMPOSITE:  A  NOVEL  METHOD IMPROVING  WATER  AND  FERTILIZER  EFFICIENCY  IN  Brunnera   macrophylla  CULTIVATION.  PART  I.  PLANT  GROWTH

Wróblewska, K.; Chohura, P.; Debicz, R.; Lejcuś, Krzysztof; Dąbrowska, Jolanta

doi:10.24326/asphc.2018.6.5

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…Lower doses of SAP (0.30%, 0.50%) will be more adequate for practical applications in environmental engineering and agriculture due to their lower influence on the top layer of soil and higher AUL values [ 35 , 49 ]. Both problems may be solved by using a technology that will allow for free water absorption by SAP in spite of the soil load and that will eliminate the problems resulting from mixing SAPs directly with soil [ 50 , 51 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

The Characteristics of Swelling Pressure for Superabsorbent Polymer and Soil Mixtures

et al. 2020

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Superabsorbent polymers (SAPs) are used in agriculture and environmental engineering to increase soil water retention. Under such conditions, the swelling pressure of the SAP in soil affects water absorption by SAP, and soil structure. The paper presents the results of swelling pressure of three cross-linked copolymers of acrylamide and potassium acrylate mixed at the ratios of 0.3%, 0.5% and 1.0% with coarse sand and loamy sand. The highest values of swelling pressure were obtained for the 1% proportion, for coarse sand (79.53 kPa) and loamy sand (78.23 kPa). The time required to reach 90% of swelling pressure for each type of SAP differs. Samples of coarse sand mixed with SAP K2 in all concentrations reached 90% of total swelling pressure in 100 min, while the loamy sand mixtures needed only about 60 min. The results were the basis for developing a model for swelling pressure of the superabsorbent and soil mixtures, which is a fully stochastic model. The conducted research demonstrated that the course of pressure increase depends on the available pore capacity and the grain size distribution of SAPs. The obtained results and the proposed model may be applied everywhere where mixtures of SAPs and soils are used to improve plant vegetation conditions.

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Section: Discussionmentioning

confidence: 99%

The Characteristics of Swelling Pressure for Superabsorbent Polymer and Soil Mixtures

et al. 2020

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“…The doses of fertilizers were calculated to cover the N supply equal to 0.36 and 0.72 g N plant −1 . For fertilizer composition, see Part I [Wroblewska et al 2018].…”

Section: Methodsmentioning

confidence: 99%

WATER ABSORBING GEOCOMPOSITE: A NOVEL METHOD IMPROVING WATER AND FERTILIZER EFFICIENCY IN Brunnera macrophylla CULTIVATION. PART II. PROPERTIES OF THE MEDIUM AND MACROELEMENT UPTAKE EFFICIENCY

Wróblewska¹,

Chohura²,

Lejcuś³

et al. 2018

Acta Sci.Pol.Hortorum Cultus

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The aim of the study was to determine the effect of the geocomposite (GC) on macronutrient uptake of container-grown Brunnera macrophylla and substrate properties. The GC consists of superabsorbent polymer (SAP), internal skeleton and non-woven geotextile. It was designed to retain water in the soil in a form available for plants, by roots overgrowing the geotextile to access water. The GC was soaked in a multi-compound fertilizer (Insol ® U) and compared with soluble fertilizer (SF) and controlled-release fertilizer (CRF). The fertilizer rates were calculated to cover the equal N supply: 0.36 and 0.72 g N plant −1. Nitrogen uptake of Brunnera cultivated with the geocomposite was approximately twice and three times as high as that of plants fertilized with SF and CRF, respectively. Exceptionally high N content was observed in plants cultivated with the GC-0.72 g N plant −1. The use of the GC also enhanced the accumulation of K and P, while CRF strongly reduced their content in plants. Distinct relations could be observed in the case of Ca accumulation. GC-0.72 g N plant −1 increased EC and water content in the medium without direct contact between SAP and substrate.

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“…The effect of WAG on plants and the physicochemical properties of soil was also described in studies by B ąbelewski et al [91], Cabała et al [92] and Pancerz et al [93]. In a study by Wróblewska et al [94], the application of WAG to soil resulted in an increase of Brunnera macrophylla biomass by up to 360% and the number of leaves by 60%. WAG has also been described as useful in typical engineering applications, in biotechnological structures or in the remediation of degraded areas [5,[95][96][97].…”

Section: Introductionmentioning

confidence: 62%

The Assessment of Water Retention Efficiency of Different Soil Amendments in Comparison to Water Absorbing Geocomposite

2021

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Soil amendments are substances added to the soil for moisture increment or physicochemical soil process enhancement. This study aimed to assess the water conservation efficiency of available organic soil amendments like bentonite, attapulgite, biochar and inorganics like superabsorbent polymer, and nonwoven geotextile in relation to the newly developed water absorbing geocomposite (WAG) and its biodegradable version (bioWAG). Soil amendments were mixed with loamy sand soil, placed in 7.5 dm3 pots, then watered and dried in controlled laboratory conditions during 22-day long drying cycles (pot experiment). Soil moisture was recorded in three locations, and matric potential was recorded in one location during the drying process. The conducted research has confirmed that the addition of any examined soil amendment in the amount of 0.7% increased soil moisture, compared to control, depending on measurement depth in the soil profile and evaporation stage. The application of WAG as a soil amendment resulted in higher soil moisture in the centre and bottom layers, by 5.4 percent point (p.p.) and 6.4 p.p. on day 4 and by 4.5 p.p. and 8.8 p.p. on day 7, respectively, relative to the control samples. Additionally, an experiment in a pressure plate extractor was conducted to ensure the reliability of the obtained results. Soil density and porosity were also recorded. Samples containing WAG had water holding capacity at a value of −10 kPa higher than samples with biochar, attapulgite, bentonite, bioWAG and control by 3.6, 2.1, 5.7, 1 and 4.5 percentage points, respectively. Only samples containing superabsorbent polymers and samples with nonwoven geotextiles had water holding capacity at a value of −10 kPa higher than WAG, by 14.3 and 0.1 percentage points, respectively. Significant changes were noted in samples amended with superabsorbent polymers resulting in a 90% soil sample porosity and bulk density decrease from 1.70 g∙cm−3 to 1.14 g∙cm−3. It was thus concluded that the water absorbing geocomposite is an advanced and most efficient solution for water retention in soil.

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WATER ABSORBING GEOCOMPOSITE: A NOVEL METHOD IMPROVING WATER AND FERTILIZER EFFICIENCY IN Brunnera macrophylla CULTIVATION. PART I. PLANT GROWTH

Cited by 12 publications

References 15 publications

The Characteristics of Swelling Pressure for Superabsorbent Polymer and Soil Mixtures

The Characteristics of Swelling Pressure for Superabsorbent Polymer and Soil Mixtures

WATER ABSORBING GEOCOMPOSITE: A NOVEL METHOD IMPROVING WATER AND FERTILIZER EFFICIENCY IN Brunnera macrophylla CULTIVATION. PART II. PROPERTIES OF THE MEDIUM AND MACROELEMENT UPTAKE EFFICIENCY

The Assessment of Water Retention Efficiency of Different Soil Amendments in Comparison to Water Absorbing Geocomposite

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