Polyvinyl alcohol (PVA) nanofibre matrix encapsulated with tebuconazole fungicide: a smart delivery system against dry root rot disease of black gram

• Published in: Polymer bulletin (Berlin, Germany) Vol. 80; no. 9; pp. 9489 - 9505
• Main Authors: Latha, M., Raja, K., Subramanian, K. S., Govindaraju, K., Karthikeyan, M., Lakshmanan, A., Srivignesh, S., Kumuthan, M. S.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2023; Springer Nature B.V
• Subjects: Agricultural production; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Controlled release; Disease; Efficiency; Encapsulation; Fungi; Fungicides; Germination; Infrared spectroscopy; Kinetics; Nanofibers; Organic Chemistry; Original Paper; Pesticides; Physical Chemistry; Polymer Sciences; Polyvinyl alcohol; Productivity; Quantitative analysis; Scanning electron microscopy; Seeds; Soft and Granular Matter; India; PVA nanofibres; Electrospinning; Seed coating; Black gram; Tebuconazole
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-022-04509-3

In the present study, nanofibre has been developed from biodegradable polymer polyvinyl alcohol (PVA) and is utilized for tebuconazole fungicide molecule encapsulation for smart delivery of bioactive molecules against root rot disease caused by Macrophomina phaseolina (Tassi) Goid in black gram. The scanning electron microscope and transmission electron microscope results confirmed the loading of tebuconazole in PVA nanofibres. UV–Vis spectroscopy and FT–IR spectroscopy give functional characterizations and further established the tebuconazole loading in PVA nanofibres. The encapsulation efficiency study resulted in about 27% tebuconazole successfully infused in PVA nanofibre. The release kinetics of tebuconazole infused in PVA nanofibres was sustained and as a controlled release. The bio-efficacy test results of disc diffusion assay and poisoned food techniques demonstrated the effectiveness of tebuconazole-loaded nanofibre on dry root rot incidence as there was a maximum inhibitory growth zone of dry root rot observed. The artificial inoculation study supported the previous techniques as plants raised from seeds coated with tebuconazole-infused PVA nanofibres recorded minimum dry root rot incidence. Seed quality test results reveal the positive response of tebuconazole-infused nanofibre seed invigoration in recording germination, seedling growth, dry matter production, and vigour index.