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Effect of nanosilica from rice husk on the growth enhancement of chili plant (Capsicum frutescens L.)

Results showed that the fresh weight, dry weight, and chlorophyll content increased with the treatment of nanosilica. The optimal concentration of nanosilica was found to be of 60 ppm. Thus, treatment of nanosilica was beneficial in enhancing the growth of the chili plants. | Journal of Science and Technology 54 (5) (2016) 607-613 DOI: 10.15625/0866-708X/54/5/7034 EFFECT OF NANOSILICA FROM RICE HUSK ON THE GROWTH ENHANCEMENT OF CHILI PLANT (Capsicum frutescens L.) Pham Dinh Dung1, Le Si Ngoc1, Nguyen Ngoc Thuy2, Lu T. Minh Truc2, Bui Van Le2, Dang Van Phu3, Nguyen Ngoc Duy3, Nguyen Quoc Hien3 1 2 3 Research and Development Center for Hi-Tech Agriculture, Cu Chi, Ho Chi Minh City University of Science, Vietnam National University in Ho Chi Minh City, Ho Chi Minh City Research and Development Center for Radiation Technology, Vietnam Atomic Energy Institute, Ho Chi Minh City * Email: ngocduy158@yahoo.com Received: 17 September 2015; Accepted for publication: 19 June 2016 ABSTRACT Nanomaterials hold great promise of improved plant disease resistance, controlled release of agro-chemicals, enhanced plant growth, etc. In this study, the effect of nanosilica (10 – 30 nm) prepared from rice husk on the growth promotion of chili plant in green house was carried out. The experiment of nanosilica treatment by foliar spraying was arranged in a factorial design with 3 replications at various nanosilica concentrations of 0, 40, 60 and 100 ppm. Plant growth characteristics and chlorophyll content were assessed. Results showed that the fresh weight, dry weight, and chlorophyll content increased with the treatment of nanosilica. The optimal concentration of nanosilica was found to be of 60 ppm. Thus, treatment of nanosilica was beneficial in enhancing the growth of the chili plants. Keywords: nanosilica, rice husk, growth, chili plant. 1. INTRODUCTION Nanotechnology opens up a wide applicability in various fields like medicine, pharmaceutics, electronics and agriculture. Nanomaterials hold great promise of improved plant disease resistance, controlled release of agro-chemicals, enhanced plant growth, etc [1, 2]. Silica and nanosilica from rice husk have been applied in various fields such as adsorbents, carriers, fillers, blending in Portland .