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Article

Effective and Sustained Control of Soil-Borne Plant Diseases by Biodegradable Polyhydroxybutyrate Mulch Films Embedded with Fungicide of Prothioconazole

1
Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, China
2
Henan Haonianjing Biological Development Co., Ltd., Yangjin Industrial Park, Jinshui District, Zhengzhou 450000, China
*
Authors to whom correspondence should be addressed.
Molecules 2021, 26(3), 762; https://doi.org/10.3390/molecules26030762
Submission received: 7 January 2021 / Revised: 27 January 2021 / Accepted: 28 January 2021 / Published: 2 February 2021
(This article belongs to the Special Issue Advanced Biodegradable Polymers)

Abstract

Soil-borne diseases and plant rhizosphere nematode have caused many crop yield losses. Increased environmental awareness is leading to more restrictions on the use of certain fumigants and root irrigation methods due to their impact on human health and soil system. Therefore, it is necessary to find alternative treatments to maintain crop economic yields and environmental sustainability. In the present work, biodegradable antifungal mulches were prepared by blending poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (PHB) with fungicide of prothioconazole (PRO), which were used for effective and sustained control of soil-borne plant diseases. To reveal the application prospect of the PHB/PRO composite films in the management of soilborne plant diseases, some physical and biological properties were evaluated. The proper mulch film of PHB/PRO was assessed based on its mechanical and optical properties, while water solubility and the film micromorphology was further characterized. The release patterns of composite films under different pH levels were investigated. Moreover, the in vitro antifungal bioassay and pot experiment showed satisfactory bioactivity of the PHB/PRO films against Sclerotium rolfsii Sacc., a soil-borne disease in peanut fields. This study demonstrated that the biodegradable mulch films containing PRO fungicide are capable of inhibiting soil-borne plant pathogenic fungi effectively, and this facile but powerful strategy may find wide applicability in sustainable plant and horticulture protection.
Keywords: antifungal mulch film; prothioconazole; polyhydroxybutyrate; controlled release; soilborne plant diseases antifungal mulch film; prothioconazole; polyhydroxybutyrate; controlled release; soilborne plant diseases
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MDPI and ACS Style

Chen, G.; Cao, L.; Cao, C.; Zhao, P.; Li, F.; Xu, B.; Huang, Q. Effective and Sustained Control of Soil-Borne Plant Diseases by Biodegradable Polyhydroxybutyrate Mulch Films Embedded with Fungicide of Prothioconazole. Molecules 2021, 26, 762. https://doi.org/10.3390/molecules26030762

AMA Style

Chen G, Cao L, Cao C, Zhao P, Li F, Xu B, Huang Q. Effective and Sustained Control of Soil-Borne Plant Diseases by Biodegradable Polyhydroxybutyrate Mulch Films Embedded with Fungicide of Prothioconazole. Molecules. 2021; 26(3):762. https://doi.org/10.3390/molecules26030762

Chicago/Turabian Style

Chen, Ge, Lidong Cao, Chong Cao, Pengyue Zhao, Fengmin Li, Bo Xu, and Qiliang Huang. 2021. "Effective and Sustained Control of Soil-Borne Plant Diseases by Biodegradable Polyhydroxybutyrate Mulch Films Embedded with Fungicide of Prothioconazole" Molecules 26, no. 3: 762. https://doi.org/10.3390/molecules26030762

APA Style

Chen, G., Cao, L., Cao, C., Zhao, P., Li, F., Xu, B., & Huang, Q. (2021). Effective and Sustained Control of Soil-Borne Plant Diseases by Biodegradable Polyhydroxybutyrate Mulch Films Embedded with Fungicide of Prothioconazole. Molecules, 26(3), 762. https://doi.org/10.3390/molecules26030762

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