Parametric evaluation using mechanistic model for release rate of phosphate ions from chitosan-coated phosphorus fertiliser pellets

Ahmad, Norhaiza; Fernando, W.J.N.; Uzir, Mohamad Hekarl

doi:10.1016/j.biosystemseng.2014.09.015

Cited by 49 publications

(25 citation statements)

References 36 publications

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“…The release of P from the polymer-coated fertilizer when in contact with the soil may also be influenced by the biodegradability of the polymer (Ao et al, 2013;Lubkowski et al, 2015) and by the characteristics of the soil solution surrounding the granule (ionic strength; temperature; pH conditions) (Hanafi et al, 2000;Tyliszczak et al, 2009;Ahmad et al, 2015). This fact contributes to the delayed release of the coated P fertilizers.…”

Section: 2greenhouse Pot Experimentsmentioning

confidence: 99%

“…However, the hydrophilicity of the polymer coatings may depend on the pH of the surrounding solution (Ahmad et al, 2015).…”

Section: Kinetics Of Fertilizer P Release In Watermentioning

confidence: 99%

“…Thus, issues such as porosity (Tomaszewska and Jarosiewicz, 2004;Silva et al, 2012), thickness of the coating layer Lubkowski, 2014;Lubkowski et al, 2015), and composition of the organic polymer (Wu and Liu, 2008;Tyliszczak et al, 2009;Hana et al, 2009) determine the P diffusion coefficient from the granule to the soil (Du et al, 2006;Lubkowski, 2014;Ahmad, 2015).…”

Section: Kinetics Of Fertilizer P Release In Watermentioning

confidence: 99%

“…Although there are many studies that demonstrate the CSRF water dissolution rate (Bortolin et al, 2012;Lubkowski, 2014;Lubkowski et al, 2015;Ahmad et al, 2015) and agronomic efficiency (Pauly et al, 2002;Figueiredo et al, 2012;Silva et al, 2012;Chagas et al, 2015), little is known about the characteristics of organic polymers that could reduce the negative effects of previous fertilizer P contact time with soil on P availability and the consequent growth response by the plant.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is difficult to find a coating material that enables these features. Many researchers report that the molecular composition of coating materials used in CSRFs have influence over P release (Wu and Liu, 2008;Tyliszczak et al, 2009;Jia et al, 2013;Ahmad et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Organic acid coated-slow-release phosphorus fertilizers improve P availability and maize growth in a tropical soil

Teixeira

Silva

Sousa

et al. 2016

J. Soil Sci. Plant Nutr.

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In this paper, we report the results of studies on the solubility (water solubility trial) and the response by plants (greenhouse pot experiment using Zea mays) for four types of monoammonium phosphate fertilizers (Conventional MAP -MAP 1 , MAP coated with a natural organic acid -MAP 2 , MAP coated with a synthetic organic acid -MAP 3 , and MAP coated with a peat humic organic acid -MAP 4 ) applied at five increasing doses (0, 100, 300, 600 and 1200 mg P dm -3 ) and pre-incubated with the soil for five lengths of time before planting (0, 15, 30 and 60 d). The coating with organic acids reduced the water solubility of the P fertilizers -MAP 4 provided a more gradual release of P over time. In the soil pot experiment, it was found that MAP 1 required the highest dose to reach 90% of dry matter accumulation by the maize plant, followed by the Coated-Slow-Release Fertilizers (CSRF). The agronomic efficiency (AE) of P applied as the CSRF was 3 to 13% greater than that of MAP 1 . In addition, MAP 4 led to higher values of AE (+11%) and apparent P recovery by maize (+41%) in comparison to MAP 1 . The physicochemical properties imposed by the chemical composition of the organic acid coatings generated fertilizers with distinct release rates and improved agronomic efficiencies.

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Section: 2greenhouse Pot Experimentsmentioning

confidence: 99%

“…However, the hydrophilicity of the polymer coatings may depend on the pH of the surrounding solution (Ahmad et al, 2015).…”

Section: Kinetics Of Fertilizer P Release In Watermentioning

confidence: 99%

Section: Kinetics Of Fertilizer P Release In Watermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Organic acid coated-slow-release phosphorus fertilizers improve P availability and maize growth in a tropical soil

Teixeira

Silva

Sousa

et al. 2016

J. Soil Sci. Plant Nutr.

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Application of Organic Polymers in Agriculture

Kumar,

Sharma,

Tikoria

et al. 2024

Organic Polymers in Energy‐Environmental Applications

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Understanding hydrotropism: A chemical engineering perspective

2015

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The mechanism of root hydrotropism has been a mystery for many years, due to the complexity of the interactions between the external environment and plants themselves. To gain an engineering perspective, the time-dependent hydrotropism of a single root has been modeled, initially using a two-dimensional model. Based on the water and nutrient distribution in rhizosphere as computed with the conservation equations, together with a basic reaction-kinetics-type growth model and an intuitive root bending model, it has been found that the root already possesses the property of hydrotropism. For the first time, hydrotropism could be tracked by a process engineering model, which is a new idea based on chemical engineering concept, suggesting an alternative mechanism of hydrotropism. The effects of different initial root widths, lengths, and other growth/transport coefficients on root hydrotropism have then been explored.

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Parametric evaluation using mechanistic model for release rate of phosphate ions from chitosan-coated phosphorus fertiliser pellets

Cited by 49 publications

References 36 publications

Organic acid coated-slow-release phosphorus fertilizers improve P availability and maize growth in a tropical soil

Organic acid coated-slow-release phosphorus fertilizers improve P availability and maize growth in a tropical soil

Application of Organic Polymers in Agriculture

Understanding hydrotropism: A chemical engineering perspective

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