Novel water-soluble polymer coatings control NPK release rate, improve soil quality and maize productivity

Mohsan Akhter; Ghulam Abbas Shah; Muhammad Bilal Khan Niazi; Saad Mir; Zaib Jahan; Muhammad Imtiaz Rashid

doi:10.1002/app.51239

Novel water-soluble polymer coatings control NPK release rate, improve soil quality and maize productivity

Mohsan Akhter
, Ghulam Abbas Shah
, Muhammad Bilal Khan Niazi^*
, Saad Mir
, Zaib Jahan
, Muhammad Imtiaz Rashid^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

We investigated different combinations of polymers (5% each) (i) starch, gelatin (polymer coating; PC-1), (ii) polyvinyl alcohol (PVA), gum Arabica (PC-2), (iii) PVA, gelatin (PC-3), (iv) starch, gum Arabica (PC-4), (v) gelatin, gum Arabica (PC-5), (vi) starch, PVA (PC-6), for coating NPK (17, 17:17) in a fluidized bed granulator. Morphological characterization indicated a uniform coating of all formulations on NPK granules. A slow release of N (PC-3), P (PC-6), and K (PC-3) was observed in water. In soil, high mineral N (63%), plant-available P (72%), and K (24%) were observed in PC-3, PC-5, and PC-6, respectively than uncoated fertilizer. Microbial biomass NPK was also higher in these treatment. This resulted in higher maize yield (66%), N (114%), P (164%), and K (137%) uptakes and apparent N (267%), P (196%), and K (358%) recoveries from applied fertilizer in these treatments. Among these, PC-3 resulted in an increase of 115% shoot N, 169% P and 138% K uptakes and 268% apparent N, 206% P and 361% K recoveries than uncoated fertilizer. Hence, coating of NPK with this biodegradable polymer combination controlled N, P, and K release and synchronized these nutrients availabilities with maize nutrients demand therefore resulted in higher maize crop yield and nutrient utilization efficiencies.

Original language	English
Article number	51239
Journal	Journal of Applied Polymer Science
Volume	138
Issue number	42
DOIs	https://doi.org/10.1002/app.51239
State	Published - 10 Sep 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Wiley Periodicals LLC.

Keywords

applications
biodegradable
biopolymers and renewable polymers
biosynthesis of polymers
coatings

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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Cite this

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title = "Novel water-soluble polymer coatings control NPK release rate, improve soil quality and maize productivity",

abstract = "We investigated different combinations of polymers (5\% each) (i) starch, gelatin (polymer coating; PC-1), (ii) polyvinyl alcohol (PVA), gum Arabica (PC-2), (iii) PVA, gelatin (PC-3), (iv) starch, gum Arabica (PC-4), (v) gelatin, gum Arabica (PC-5), (vi) starch, PVA (PC-6), for coating NPK (17, 17:17) in a fluidized bed granulator. Morphological characterization indicated a uniform coating of all formulations on NPK granules. A slow release of N (PC-3), P (PC-6), and K (PC-3) was observed in water. In soil, high mineral N (63\%), plant-available P (72\%), and K (24\%) were observed in PC-3, PC-5, and PC-6, respectively than uncoated fertilizer. Microbial biomass NPK was also higher in these treatment. This resulted in higher maize yield (66\%), N (114\%), P (164\%), and K (137\%) uptakes and apparent N (267\%), P (196\%), and K (358\%) recoveries from applied fertilizer in these treatments. Among these, PC-3 resulted in an increase of 115\% shoot N, 169\% P and 138\% K uptakes and 268\% apparent N, 206\% P and 361\% K recoveries than uncoated fertilizer. Hence, coating of NPK with this biodegradable polymer combination controlled N, P, and K release and synchronized these nutrients availabilities with maize nutrients demand therefore resulted in higher maize crop yield and nutrient utilization efficiencies.",

keywords = "applications, biodegradable, biopolymers and renewable polymers, biosynthesis of polymers, coatings",

author = "Mohsan Akhter and Shah, \{Ghulam Abbas\} and Niazi, \{Muhammad Bilal Khan\} and Saad Mir and Zaib Jahan and Rashid, \{Muhammad Imtiaz\}",

note = "Publisher Copyright: {\textcopyright} 2021 Wiley Periodicals LLC.",

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AU - Akhter, Mohsan

AU - Shah, Ghulam Abbas

AU - Niazi, Muhammad Bilal Khan

AU - Mir, Saad

AU - Jahan, Zaib

AU - Rashid, Muhammad Imtiaz

PY - 2021/9/10

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N2 - We investigated different combinations of polymers (5% each) (i) starch, gelatin (polymer coating; PC-1), (ii) polyvinyl alcohol (PVA), gum Arabica (PC-2), (iii) PVA, gelatin (PC-3), (iv) starch, gum Arabica (PC-4), (v) gelatin, gum Arabica (PC-5), (vi) starch, PVA (PC-6), for coating NPK (17, 17:17) in a fluidized bed granulator. Morphological characterization indicated a uniform coating of all formulations on NPK granules. A slow release of N (PC-3), P (PC-6), and K (PC-3) was observed in water. In soil, high mineral N (63%), plant-available P (72%), and K (24%) were observed in PC-3, PC-5, and PC-6, respectively than uncoated fertilizer. Microbial biomass NPK was also higher in these treatment. This resulted in higher maize yield (66%), N (114%), P (164%), and K (137%) uptakes and apparent N (267%), P (196%), and K (358%) recoveries from applied fertilizer in these treatments. Among these, PC-3 resulted in an increase of 115% shoot N, 169% P and 138% K uptakes and 268% apparent N, 206% P and 361% K recoveries than uncoated fertilizer. Hence, coating of NPK with this biodegradable polymer combination controlled N, P, and K release and synchronized these nutrients availabilities with maize nutrients demand therefore resulted in higher maize crop yield and nutrient utilization efficiencies.

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Novel water-soluble polymer coatings control NPK release rate, improve soil quality and maize productivity

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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