Preparation and Foliar Application of Oligochitosan - Nanosilica on the Enhancement of Soybean Seed Yield

Preparation and Foliar Application of Oligochitosan - Nanosilica on the Enhancement of Soybean Seed Yield



Dang Van Phu, Bui Duy Du, Le Nghiem Anh Tuan, Hoang Van Tam, Nguyen Quoc Hien



Oligochitosan with weight average molecu-lar weight
(Mw) of 5000 g/mol was prepared by gamma Co-60 radiation degradation of
4% chitosan solution containing 0.5% H2O2 at 21 kGy. Nanosilica with
size of 10 – 30 nm was synthesized by calcination of acid treated rice
husk at 700o C for 2 h. The mixture of 2% oligo-chitosan-2% nanosilica
was prepared by dispersion of nanosilica in oligochitosan solution.
Oligochitosan, nanosilica and their mixture were characterized by gel
permeation chromatography (GPC), transmission electr-on microscopy
(TEM), X-ray diffraction (XRD), energy dispersive x-ray spectroscopy
(EDX), Ultraviolet-visible spectroscopy (UV-Vis), and Furrier transform
infrared spectroscopy (FT-IR). Effect of foliar application of
oli-gochitosan and oligochitosan-nanosilica on soybean seed yield was
conducted in experimental field. Results indi-cated that soybean seed
yield increased 10.5 and 17.0% for oligochitosan and
oligochitosan-nanosilica, respect-tively for the control. Radiation
degraded oligo-chitosan and its mixture with nanosilica can be
potentially used for cultivation of soybean with enhanced seed yield. 



10.22161/ijeab/2.1.53



http://ijeab.com/upload_document/issue_files/53%20IJEAB-FEB-2017-7-Preparation%20and%20Foliar%20Application%20of%20Oligochitosan.pdf



http://ijeab.com/submit-paper/


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