Applications of Polymeric Substances as Physical Soil Conditioners

Boodt, M. F. De

doi:10.1007/978-1-4899-2611-1_19

Cited by 20 publications

(14 citation statements)

References 16 publications

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“…In general, the water retention of Terawet and Coco-Peat treated soils were similar but significantly higher (p < 0.001) than both Teraflow and the control treated soils, which were also similar. These results confirm previous observation that polymeric absorbents retain water that would otherwise have been lost by evaporation or percolation (Ouchi et al, 1989;De Boodt, 1990). Teraflow treated soils showed much lower retention than expected, and this might be due to leaching of this liquid polymeric absorbent.…”

Section: Water Retentionsupporting

confidence: 91%

“…Evidence provided by Ouchi et al (1989) indicated that the withheld water is almost completely available to plants on continuous basis. De Boodt (1990) showed that this water is subjected not only to gravity by promoting vertical downward movement, but also to lateral suction leading to reduction in irrigation.…”

Section: West Africa Journal Of Applied Ecology (Wajae) -Issn: 0855-4307mentioning

confidence: 99%

“…Soil conditioners, both natural and synthetic, contribute significantly to provide a reservoir of soil water to plants on demand in the upper layers of the soil where the root systems normally develop. These polymeric organic materials and hydrogels apart from improving the soil physical properties, also serve as buffers against temporary drought stress and reduce the risk of plant failure during establishment (De Boodt, 1990;Johnson & Leah, 1990). This is achieved by means of reduction of evaporation through restricted movement of water from the sub-surface to the surface layer (Ouchi et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Effects of natural and synthetic soil conditioners on soil moisture retention and maize yield

Yangyuoru¹,

Boateng²,

Adiku³

et al. 2009

West African Journal of Applied Ecology

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The efficacy of a natural soil conditioner, Coco-Peat (C-P), and synthetic soil conditioners, Terawet (T-200) and Teraflow (T-F), in improving soil moisture content were examined on five Ghanaian soil series (Akroso, Akuse, Amo, Hake and Oyarifa). In general, the water retention of T-200 and C-P treated soils were similar but significantly higher (p < 0.001) than that of T-F and the control (C-T) treated soils, which were also similar on all the test soils. The dry matter yields of the test crop (maize) were 5.4, 5.2, 4.5 t ha -1 on T-200, C-P and T-F treated soils, respectively, on Akroso series. These yields were 36%, 31% and 5%, respectively, more than those of the control treatment. On Akuse series even though T-200 and T-F gave higher dry matter yields than the control, the differences were not significant, only C-P treatment gave significantly higher (p < 0.001) yield than the control. On Amo series, dry matter yields of 6.1, 5.8 and 4.9 t ha -1 on T-200, C-P and T-F treated soils, respectively, were 38%, 31% and 10% more than the control treatment. On Hake series, T-200, C-P and T-F treatments improved dry matter yields by 45%, 32% and 12%, respectively, over that of the control. The greatest effect of the polymeric absorbents was observed on the sandy/clay/loam Oyarifa series. The treatments T-200, C-P and T-F improved dry matter yields by 92%, 81% and 4%, respectively, over the control treatment. The results indicate that the differences in yields over the control were due to the improved water retention ability of the soils amended with the polymeric absorbents.

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Section: Water Retentionsupporting

confidence: 91%

Section: West Africa Journal Of Applied Ecology (Wajae) -Issn: 0855-4307mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of natural and synthetic soil conditioners on soil moisture retention and maize yield

Yangyuoru¹,

Boateng²,

Adiku³

et al. 2009

West African Journal of Applied Ecology

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“…Many field trials from the 1950s to the present investigated polymer amendment effects on crop response and soil structural and hydraulic properties; these have been summarized in several reviews and monographs (Bouranis, 1998;Bouranis et al, 1995;De Boodt, 1990Levy and Ben-Hur, 1998;Polyakova, 1976Polyakova, , 1978Seybold, 1994;Stewart, 1975;Terry and Nelson, 1986;Wallace, 1998a,b;Wallace and Terry, 1998;Wallace, 1986a,b, 1995). In the 1980s and 1990s there were many laboratory column and mini-tray studies that investigated polymer effects on soil structure, infiltration, hydraulic conductivity, and related phenomena, often focusing on surface sealing, runoff, and soil aggregate dispersion.…”

Section: Overview Of Current Pam Usementioning

confidence: 99%

Polyacrylamide in Agriculture and Environmental Land Management

Sojka

Bjorneberg

Entry

et al. 2007

Advances in Agronomy

355

240

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“…Interest in these interactions stems from the potential use of these polymers as soil conditioners (de Boodt, 1990). One such polymer, poly(vinyl) alcohol, has been shown to improve the physical properties and the aggregate stability of clayey soils (Painuli and Pagliai, 1990).…”

Section: Introductionmentioning

confidence: 99%

Some Colloidal Properties of Beidellite: Comparison with Low and High Charge Montmorillonites

Hetzel

Doner

1993

Clays and clay miner.

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Abstract--Recent evidence of the occurrence of beidellite in many soils around the world necessitates a better understanding of the role of charge location on the colloidal behavior of this smectite as compared to the more frequently studied montmorillonites. Clay suspension stability and sorption of an organic polymer, two properties sensitive to surface charge characteristics, were selected to examine the differences in colloidal behaviors of these smectites. The Otay montmorillonite was shown to have a higher charge than either the beidellite or the SWy-1 montmorillonite. Even though structural formulae resulted in a higher permanent charge for the beidellite as compared to the SWy-1, effective charge of these two smectites is the same. The pH dependency of the critical coagulation concentration of the smectites could not be explained based only on edge charge considerations, and it is proposed that tetrahedral charge location enhances the pH effect on the CCC. Decreased poly(vinyl) alcohol sorption with either increasing surface charge or tetrahedral charge location was observed. Both parameters affect the ease of replacement of water molecules by PVA on the surface of smectites.

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Applications of Polymeric Substances as Physical Soil Conditioners

Cited by 20 publications

References 16 publications

Effects of natural and synthetic soil conditioners on soil moisture retention and maize yield

Effects of natural and synthetic soil conditioners on soil moisture retention and maize yield

Polyacrylamide in Agriculture and Environmental Land Management

Some Colloidal Properties of Beidellite: Comparison with Low and High Charge Montmorillonites

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