Data/hora: 08/06/2024 09:57:00

Provedor de dados: | 63
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
Fonte: | info:eu-repo/semantics/openAccess