Abstract
The biodegradable polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) has been used to design experimental sustained-release formulations of the herbicide Zellek Super in the form of films and microgranules. The kinetics of polymer degradation and the dynamics of herbicide release show that the rate and extent of herbicide release from the polymer matrix into the soil depends on the geometry of the carrier and the proportion of the pesticide loaded into it (polymer/pesticide mass ratio). Experiments with the creeping bentgrass (Agrostis stolonifera L.) show that the formulations of the herbicide Zellek Super constructed as microgranules and films can be successfully used to suppress the growth of grasses. This study is the first to demonstrate that biodegradable polyhydroxyalkanoates can be used effectively to construct environmentally friendly sustained-release PHA-herbicide systems that can be placed into the soil together with seeds.
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Acknowledgment
We thank Dr. Christopher Brigham for critical review of the manuscript prior to submission. The study was supported by the project initiated by the Government of the Russian Federation for governmental support of scientific research conducted under the guidance of leading scientists at Russian institutions of higher learning (Agreement No. 11.G34.31.0013).
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Prudnikova, S.V., Boyandin, A.N., Kalacheva, G.S. et al. Degradable Polyhydroxyalkanoates as Herbicide Carriers. J Polym Environ 21, 675–682 (2013). https://doi.org/10.1007/s10924-012-0561-z
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DOI: https://doi.org/10.1007/s10924-012-0561-z