| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Barley seed coating with urease and phosphatase to improve N and P uptake
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| Autores: |
Mvila,Beaufray Gilaime
Pilar-Izquierdo,María Concepción
Busto,María Dolores
Perez-Mateos,Manuel
Ortega,Natividad
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| Data: |
2020-01-01
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| Ano: |
2020
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| Palavras-chave: |
Soil enzymes
Seed encapsulation
Plant nutrients uptake
Humic acids
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000601401
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/1678-992x-2018-0227
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.77 n.6 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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