| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000435712 |
| ISSN: | 0001-3765 |
| Authors: | Gomes, Mateus P1 Zonta, Everaldo2 Stafanato, Juliano B2 Pereira, Ariana M3 |
| Institutions: | 1Universidade Federal de Vicosa, Departamento de Solos, Vicosa, Minas Gerais. Brasil 2Universidade Federal Rural do Rio de Janeiro, Departamento de Solos, Seropedica, Rio de Janeiro. Brasil 3Universidade Federal de Vicosa, Departamento de Fitotecnia, Vicosa, Minas Gerais. Brasil |
| Year: | 2018 |
| Season: | Dic |
| Volumen: | 90 |
| Number: | 4 |
| Pages: | 3685-3692 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | he objective of this study was to evaluate NBPT, zeolite and humic acid in different concentrations as inhibitors of the activity of the enzyme urease. The activity of the urease enzyme was quantified by the methods proposed by May and Douglas (1976) and Witte and Medina-Escobar (2001). For this reason, two experiments were conducted in a completely randomized design in split plots, in which the incubation periods are the plots and the fertilizers with the inhibitors at the different concentrations are the subplots with three replications. Fifteen fertilizers based on NBPT-coated urea, humic acid and zeolite were used in different concentrations. The two methods of analysis used in the experiment confirmed the efficiency of NBPT in inhibiting the enzymatic action even at low concentration, with 0.02% (m/m) being sufficient to inhibit urease, with no difference between inhibitor concentrations. The addition of humic acid reduced the activity of urease after 36 hours of reaction when the activity of the enzyme was evaluated by the method proposed by May and Douglas (1976). Zeolite did not influence the activity of the urease enzyme when analyzed by the May and Douglas method (1976) |
| Disciplines: | Agrociencias |
| Keyword: | Suelos, Nutrición mineral, Zeolitas, Acidos húmicos, Ureasa, Actividad enzimática |
| Keyword: | Soils, Mineral nutrition, Zeolites, Humic acids, Urease, Enzymatic activity |
| Full text: | https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703685&lng=en&nrm=iso&tlng=en |
