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Chitosan-Urea Nanocomposite for Improved Fertilizer Applications: The Effect on the Soil Enzymatic Activities and Microflora Dynamics in N Cycle of Potatoes (Solanum tuberosum L.).
Kondal, Rohini; Kalia, Anu; Krejcar, Ondrej; Kuca, Kamil; Sharma, Sat Pal; Luthra, Karanvir; Dheri, Gurmeet Singh; Vikal, Yogesh; Taggar, Monica Sachdeva; Abd-Elsalam, Kamel A; Gomes, Carmen L.
Afiliação
  • Kondal R; Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Kalia A; Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Krejcar O; Center for Basic and Applied Science, Faculty of Informatics and Management, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic.
  • Kuca K; Malaysia Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia.
  • Sharma SP; Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic.
  • Luthra K; Department of Vegetable Science, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Dheri GS; Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Vikal Y; Green House Gas Laboratory, Department of Soil Science, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Taggar MS; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Abd-Elsalam KA; Department of Renewable Energy Engineering, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
  • Gomes CL; Agricultural Research Center, Plant Pathology Research Institute, Giza 12619, Egypt.
Polymers (Basel) ; 13(17)2021 Aug 27.
Article em En | MEDLINE | ID: mdl-34502927
The impact of polymer-based slow-release urea formulations on soil microbial N dynamics in potatoes has been sparingly deciphered. The present study investigated the effect of a biodegradable nano-polymer urea formulation on soil enzymatic activities and microflora involved in the N cycling of potato (Solanum tuberosum L.). The nano-chitosan-urea composite (NCUC) treatment significantly increased the soil dehydrogenase activity, organic carbon content and available potassium compared to the conventional urea (CU) treatment. The soil ammonical nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) contents and urease activity were significantly decreased in the NCUC-amended soil. The slow urea hydrolysis rate led to low concentrations of NH4+-N and NO3--N in the tested potato soil. Furthermore, these results corroborate the low count of ammonia oxidizer and nitrate reducer populations. Quantitative PCR (q-PCR) studies revealed that the relative abundance of eubacterial (AOB) and archaeal ammonia-oxidizing (AOA) populations was reduced in the NCUC-treated soil compared to CU. The abundance of AOA was particularly lower than AOB, probably due to the more neutral and alkaline conditions of the tested soil. Our results suggest that the biodegradable polymer urea composite had a significant effect on the microbiota associated with soil N dynamics. Therefore, the developed NCUC could be used as a slow N-release fertilizer for enhanced growth and crop yields of potato.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article