USE OF BIOBLEND POLYSTYRENE-POLY (3-HYDROXYBUTYRATE) AS THE COATING MATERIAL OF THE NPK SLOW RELEASE FERTILIZER USE OF BIOBLEND POLYSTYRENE-POLY (3-HYDROXYBUTYRATE) AS THE COATING MATERIAL OF THE NPK SLOW RELEASE FERTILIZER

The low-efficiency problem in fertilizer application can be overcome by controlling fertilizer solubility, i.e. by rendering the fertilizer to be released gradually; such material is also known as slow-release fertilizer (SRF). This research was aimed to formulate SRF by coating technique using acrylic and chitosan as the coating material, and to evaluate fertilizer resistance to too fast disintegration, and rate of nutrient release method. The results demonstrated that fertilizer formulation containing N, P, K, Fe, Cu, and Zn with granulation technique yielded 74% of granules with 2-5 mm in diameter. The SRFs (formulated fertilizer with acrylic or chitosan coating) were more resistant to water pounding than non-SRF. Furthermore, shaking test with distilled water or 2% citric acid, or by percolation test with distilled water showed that the SRFs had lower nutrient solubility than the non-SRFs. The results of shaking test also specifically indicated that coating with acrylic made the fertilizer more resistant to the citric acid,suggesting that this coating material would be more suitable in acidic soils. The SRFs formulated with the addition of chitosan during blending of micronutrients prior to mixing with macronutrients, granulation, and final coating exhibited lower nutrient solubility than the SRFs without the pre-coating chitosan addition. [How to Cite: Lili H, G Djajakirana, Darmawan, and CP Munoz. 2015. Slow- Release Fertilizer Formulation Using Acrylic and Chitosan Coating. J Trop Soils 19: 37-45. Doi: 10.5400/jts.2015.20.1.37][Permalink/DOI: www.dx.doi.org/10.5400/jts.2015.20.1.37]

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Utilization of Chitosan as Coating Material in Making NPK Slow Release Fertilizer

Macromolecular Symposia ◽

10.1002/masy.201900188 ◽

2020 ◽

Vol 391 (1) ◽

pp. 1900188 ◽

Cited By ~ 2

Author(s):

Muhammad D. Gumelar ◽

Moh. Hamzah ◽

Ade S. Hidayat ◽

Dita A. Saputra ◽

Idvan

Keyword(s):

Slow Release ◽

Coating Material ◽

Slow Release Fertilizer

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Application Research of Slow-Release Fertilizer in Plant Camouflage

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.941-944.956 ◽

2014 ◽

Vol 941-944 ◽

pp. 956-959 ◽

Cited By ~ 2

Author(s):

Nai Yan Zhang ◽

Xiao Qi Li ◽

Li Yong Qu

Keyword(s):

Nitrogen Fertilizer ◽

Slow Release ◽

Application Research ◽

Sodium Carboxymethylcellulose ◽

Socioeconomic Impacts ◽

Fertilizer Use ◽

Slow Release Formulations ◽

Slow Release Fertilizer ◽

Use Efficiency ◽

Short Time

Plant camouflage is one of the camouflage methods, which is conducted by using of planting and collecting plant and changing color of plant to conceal targets. It can be used to camouflage relatively big permanent fixed targets in peace time and also to camouflage relatively big permanent fixed targets in peace time and also to camouflage relatively small fixed or moving targets. However, in recent years, with the natural disasters occurring alternately, plant camouflage can be destroyed easily, and it is difficult to rebuild in a short time. To improve the effect of plant camouflage, more fertilizers are required, which may become an environmental hazard, unless adequate technical and socioeconomic impacts are addressed. A multifunctional slow-release nitrogen fertilizer has been developed to improve fertilizer use efficiency and reduce environmental pollution. In this paper, a series of slow-release formulations of nitrogen fertilizer were developed on the basis of natural attapulgite clay, ethylcellulose film, and sodium carboxymethylcellulose/hydroxylethylcellulose hydrogel. The structural of the product were examined. The slow-release profiles of ammonium chloride, ammonium sulfate, and urea as nitrogen fertilizer substrates were determined in soil.

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Study on Environmentally Friendly Slow-Release Fertilizer for Plant Camouflage

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.726-731.4521 ◽

2013 ◽

Vol 726-731 ◽

pp. 4521-4524 ◽

Cited By ~ 1

Author(s):

Nai Yan Zhang ◽

Xiao Qi Li ◽

Juan Zhang ◽

Liang Liang Dai

Keyword(s):

Nitrogen Fertilizer ◽

Slow Release ◽

Moving Targets ◽

Sodium Carboxymethylcellulose ◽

Socioeconomic Impacts ◽

Fertilizer Use ◽

Slow Release Formulations ◽

Slow Release Fertilizer ◽

Use Efficiency ◽

Short Time

Plant camouflage is conducted by use of planting and collecting plant and changing color of plant to conceal targets. It can be used to camouflage relatively big permanent fixed targets in peace time and also to camouflage relatively big permanent fixed targets in peace time and also to camouflage relatively small fixed or moving targets. However, in recent years, with the natural disasters occurring alternately, plant camouflage can be destroyed easily, and it is difficult to rebuild in a short time. To improve the effect of plant camouflage, more fertilizers are required, which may become an environmental hazard, unless adequate technical and socioeconomic impacts are addressed. A multifunctional slow-release nitrogen fertilizer has been developed to improve fertilizer use efficiency and reduce environmental pollution. In this paper, a series of slow-release formulations of nitrogen fertilizer were developed on the basis of natural attapulgite clay, ethylcellulose film, and sodium carboxymethylcellulose/hydroxylethylcellulose hydrogel. The structural of the product were examined. The slow-release profiles of ammonium chloride, ammonium sulfate, and urea as nitrogen fertilizer substrates were determined in soil.

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Effect of Temperature on the Behavior of Slow Release Fertilizer from ENR-50/RH/Urea Composites

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1021.308 ◽

2021 ◽

Vol 1021 ◽

pp. 308-316

Author(s):

Marwa N Al-Samarrai ◽

Rosniza Hamzah

Keyword(s):

Controlled Release ◽

Slow Release ◽

Coating Material ◽

Effect Of Temperature ◽

The Third ◽

Slow Release Fertilizer ◽

Urea Release ◽

Uv Visible ◽

Release Method ◽

Fast Release

Generally, chemical fertilizer is considered as a one of the most significant materials for increasing food production. However, the fast release of the conventional fertilizer could effect negatively on the plants. Thus, the idea of using controlled release method in the agriculture application has emerged recently due to the efficiency of fertilizers can be improved by the controlled-release method. The objective of this work is to synthesize a new Slow Release Fertilizer from three different materials; the first one is urea, which is the conventional fertilizer, the second one is the rice husk (RH), which represents the carrier material, and the third one is epoxidized natural rubber (ENR-50), which represents the coating material. This work was divided into three series. The first series is the production of RH/Urea beads. RH was treated with alkaline NaOH at 1wt.% according to the weight of RH. The treated RH was then mixed with urea that produced treated RH/urea beads. In the second series, 200 mg of ENR-50 was applied to produce thicknes of coating material for treated RH/urea beads. In the third series, treated RH/urea beads coated with 200 mg of ENR-50 were subjected to the released behavior at different temperature in the water. After that, the prepared samples were characterized using Scanning Electron Microscopy (SEM) and UV-visible spectroscopy. Results suggested that the increasing of temperature has increased the rate of urea release of SRF samples in the water. Furthermore, the SRF sample at 35, 45, and 55 °C showed shorter time of release at 40, 34, and 17 day as compared to 47 day of SRF at room temperature.

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