RT info:eu-repo/semantics/article
T1 Barley seed coating with urease and phosphatase to improve N and P uptake
A1 Mvila, Beaufray Gilaime
A1 Pilar Izquierdo, María Concepción
A1 Busto Núñez, Mª Dolores
A1 Pérez Mateos, Manuel
A1 Ortega Santamaría, Natividad
K1 Soil enzymes
K1 Seed encapsulation
K1 Plant nutrients uptake
K1 Humic acids
K1 Bioquímica
K1 Biochemistry
K1 Alimentos
K1 Food
AB 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.
PB Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
YR 2020
FD 2020-01
LK http://hdl.handle.net/10259/8193
UL http://hdl.handle.net/10259/8193
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024