Pedosphere 33(5): 765--775, 2023
ISSN 1002-0160/CN 32-1315/P
©2023 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Effects of nanofertilizer and nano-plant hormone on soil chemical properties and microbial community in two different soil types
John Lester Viscara PIDE1, Nolissa Delmo ORGANO1, Andre Freire CRUZ2, Lilia M. FERNANDO3, Lucille C. VILLEGAS4, Evelyn F. DELFIN5, Michelle Ann Magat CALUBAQUIB6, Roselle Estera MADAYAG1, Erlinda S. PATERNO1
1 Division of Soil Science, Agricultural Systems Institute, College of Agriculture and Food Science(CAFS), University of the Philippines Los Baños(UPLB), College, Laguna 4031(Philippines);
2 Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606-8522(Japan);
3 Crop Biotechnology Division, Institute of Crop Science, CAFS, UPLB, College, Laguna 4031(Philippines);
4 Microbiology Division, Institute of Biological Sciences, College of Arts and Sciences, UPLB, College, Laguna 4031(Philippines);
5 Institute of Plant Breeding, CAFS, UPLB, College, Laguna 4031(Philippines);
6 Isabela State University Cabagan Campus, Isabela 3328(Philippines)
Corresponding Author:John Lester Viscara PIDE
ABSTRACT
      Application of nanotechnology in agriculture has been expanded to improve crop production. The impact of nanomaterials (NMs) on factors that influence the survival and function of beneficial microorganisms is a less studied aspect that needs to be better understood. Only a few studies have assessed the effects of NMs on beneficial soil microorganisms. This study was conducted to assess the effects of nanofertilizer FertiGroe® N (FG-N) and nano-plant hormone HormoGroe® auxin (HG-A) on the chemical properties and microbial communities of two contrasting soils, Lipa clay loam (CL) and Sariaya sandy loam (SL), over a 35-d incubation period in the laboratory. Bacterial and fungal communities were evaluated using amplicon sequencing analysis within the 16S and internal transcribed spacer regions, respectively. The application of FG-N significantly decreased soil pH, but did not affect total N and available P for both soil types. A significant increase in exchangeable K was observed only in Lipa CL. The application of HG-A had no significant effect on soil chemical properties. Regarding the bacterial community after incubation, the relative abundances of Acidobacteriia, Chthonomonadetes, and Saccharimonadia decreased, whereas Acidimicrobiia, Chloroflexia, and Gemmatimonadetes increased with FG-N application in Lipa CL. The application of HG-A increased the relative abundance of Rubrobacteria, Chthonomonadetes, and Chloroflexia in Lipa CL. For the fungal community, FG-N application increased the relative abundance of Sordariomycetes, Agaricomycetes, and Eurotiomycetes, whereas Dothideomycetes and Mortierellomycetes decreased in Lipa CL after incubation. In Sariaya SL, FG-N application increased the relative abundance of Dothideomycetes, Eurotiomycetes, and Mortierellomycetes, but decreased that of Sordariomycetes and Agaricomycetes. Fungal classes observed in the control samples were not detected in the HG-A treatment, but were recovered after incubation in Lipa CL. The microbial diversity in both soil types showed slight changes with FG-N and HG-A application. Principal coordinate analysis illustrated the clustering of bacterial and fungal taxa between Lipa CL and Sariaya SL. Pearson correlation analysis showed that several bacterial and fungal communities were positively or negatively correlated with soil pH. The results suggest that FG-N can be safely used in crop production and HG-A may be used mainly for vegetative propagation.
Key Words:  amplicon sequencing,bacterial community,crop production,fungal community,microbial diversity,nanomaterial,nanotechnology
Citation: Pide J L V, Organo N D, Cruz A F, Fernando L M, Villegas L C, Delfin E F, Calubaquib M A M, Madayag R E, Paterno E S. 2023. Effects of nanofertilizer and nano-plant hormone on soil chemical properties and microbial community in two different soil types. Pedosphere. 33(5): 765-775.
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