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Provedor de dados:  Scientia Agricola
País:  Brazil
Título:  Barley seed coating with urease and phosphatase to improve N and P uptake
Autores:  Mvila,Beaufray Gilaime
Pilar-Izquierdo,María Concepción
Busto,María Dolores
Perez-Mateos,Manuel
Ortega,Natividad
Data:  2020-01-01
Ano:  2020
Palavras-chave:  Soil enzymes
Seed encapsulation
Plant nutrients uptake
Humic acids
Resumo:  ABSTRACT: In this work, barley seed coating with urease and phosphatase, free and immobilized in humic acids, was studied as a tool to enhance the use efficiency of N and P by plants. The seeds were encapsulated in gels of Ca-alginate by a method that allows gelation of the polymer, containing enzymes, from the surface of seeds outward. The coating process did not affect seed germination. A pot experiment with the coated seeds was carried out. The seed coating with free enzymes increased soil ammonium-N (NH4+-N) and inorganic P up to 39 and 54 %, respectively, and up to 62 and 64 %, with the immobilized enzymes, in comparison with control pots. Seed coating improved N (47-137 %) and P (29-61 %) uptake by plants. Moreover, a synergistic response in N and P uptake with both urease and phosphatase was observed. It can be concluded that the seed coating with urease and phosphatase exerted a positive effect enhancing the use of N and P by plants, which could lead to the development of natural fertilizers, minimizing the application of chemical fertilizers.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000601401
Editor:  São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação:  10.1590/1678-992x-2018-0227
Formato:  text/html
Fonte:  Scientia Agricola v.77 n.6 2020
Direitos:  info:eu-repo/semantics/openAccess
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