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Cassava starch-graft- poly( acrylonitrile)-coated urea fertilizer with sustained release and water retention properties

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Title Cassava starch-graft- poly( acrylonitrile)-coated urea fertilizer with sustained release and water retention properties
Not Available
 
Creator Alummoottil N. Jyothi1 | Swetha S. Pillai1 | Mancharyamkunnath Aravind1 | Salma A. Salim1 | Susan John Kuzhivilayil2
 
Subject cassava starch, controlled release urea, grafted starch, soil incubation, water absorbency
 
Description Not Available
Cassava starch-graft-
poly(
acrylonitrile) samples were synthesized by a free radical-initiated
polymerization reaction, and urea fertilizer was coated with these grafted
starches to obtain the dual benefit of sustained release and water retention properties.
A response surface design was used to optimize the synthetic conditions of starch-graft-
copolymers
to maximize the slow nutrient release and water absorbency. The
FT-IR
analysis confirmed the grafting reaction, and scanning electron micrographs
revealed the ultrastructure of polymer coating. The release of nitrogen in soil from
coated urea was more sustained than that from uncoated urea and it varied with
grafting level of the polymer. The uncoated urea showed almost complete release of
nitrogen by 1 month, whereas %N release was in the range of 69.8%–78.3% from the
grafted starch-coated
urea even after 108 days of incubation. The water retention
capacity of the coated urea ranged from 74.2% to 426.6% and it decreased with
increase in % grafting of the coating material.
Not Available
 
Date 2021-08-04T06:23:56Z
2021-08-04T06:23:56Z
2018-01-02
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/52859
 
Language English
 
Relation Not Available;
 
Publisher Wiley