Efficacy of tebuconazole embedded in biodegradable poly-3-hydroxybutyrate to inhibit the development of Fusarium moniliforme in soil microecosystems.

Autor: Volova TG; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia., Prudnikova SV; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia.; Siberian Federal University, Krasnoyarsk, Russia., Zhila NO; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia., Vinogradova ON; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia., Shumilova AA; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia., Nikolaeva ED; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia., Kiselev EG; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia., Shishatskaya EI; Institute of Biophysics, Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russia.
Jazyk: angličtina
Zdroj: Pest management science [Pest Manag Sci] 2017 May; Vol. 73 (5), pp. 925-935. Date of Electronic Publication: 2016 Aug 30.
DOI: 10.1002/ps.4367
Abstrakt: Background: An important line of research is the development of a new generation of formulations with targeted and controlled release of the pesticide, using matrices made from biodegradable materials. In this study, slow-release formulations of the fungicide tebuconazole (TEB) have been prepared by embedding it into the matrix of poly-3-hydroxybutyrate (P3HB) in the form of films, microgranules and pellets.
Results: The average rates of P3HB degradation were determined by the geometry of the formulation, reaching, for 63 days, 0.095-0.116, 0.081-0.083 and 0.030-0.055 mg day -1 for films, microgranules and pellets respectively. The fungicidal activity of P3HB/TEB against the plant pathogen Fusarium moniliforme was compared with that of the commercial formulation Raxil Ultra. A pronounced fungicidal effect of the experimental P3HB/TEB formulations was observed in 2-4 weeks after application, and it was retained for 8 weeks, without affecting significantly the development of soil aboriginal microflora.
Conclusion: TEB release can be regulated by the process employed to fabricate the formulation and the fungicide loading, and the TEB accumulates in the soil gradually, as the polymer is degraded. The experimental forms of TEB embedded in the slowly degraded P3HB can be used as a basis for developing slow-release fungicide formulations. © 2016 Society of Chemical Industry.
(© 2016 Society of Chemical Industry.)
Databáze: MEDLINE
Externí odkaz: