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Efficacy of tebuconazole embedded in biodegradable poly‐3‐hydroxybutyrate to inhibit the development of Fusarium moniliforme in soil microecosystems
Author(s) -
Volova Tatiana G,
Prudnikova Svetlana V,
Zhila Natalia O,
Vinogradova Olga N,
Shumilova Anna A,
Nikolaeva Elena D,
Kiselev Evgeniy G,
Shishatskaya Ekaterina I
Publication year - 2017
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4367
Subject(s) - tebuconazole , fungicide , poly 3 hydroxybutyrate , fusarium , degradation (telecommunications) , materials science , pellets , pesticide , chemistry , biodegradation , food science , chemical engineering , horticulture , composite material , agronomy , biology , organic chemistry , biochemistry , computer science , telecommunications , engineering
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