Barley seed coating with urease and phosphatase to improve N and P uptake
Autor: | Beaufray Gilaime Mvila, María Concepción Pilar-Izquierdo, María Dolores Busto, Manuel Perez-Mateos, Natividad Ortega |
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Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
Rok vydání: | 2020 |
Předmět: | |
Zdroj: | Scientia Agricola, Vol 77, Iss 6 (2020) |
Druh dokumentu: | article |
ISSN: | 1678-992X 1678-992x |
DOI: | 10.1590/1678-992x-2018-0227 |
Popis: | 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. |
Databáze: | Directory of Open Access Journals |
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