Biosynthesised silver and copper nanoformulation as foliar spray to control bird's eye spot disease in tea plantations
| Autor: | Kolandasamy Manjukarunambika, Kolandaivel Hemalatha, Vishwanathan Elango, Sengottaiyan Eashwari Jeeva, Rajamanickam Mohanraj, Somasundaram Prathap, Ponnusamy Ponmurugan, Jyoti Prasad Kakati, Balasubramanian Mythili Gnanamangai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Silver
Biological pest control chemistry.chemical_element Metal Nanoparticles Pseudomonas fluorescens 02 engineering and technology 010402 general chemistry 01 natural sciences Silver nanoparticle Camellia sinensis Electrical and Electronic Engineering Plant Diseases biology food and beverages 021001 nanoscience & nanotechnology biology.organism_classification Copper Streptomyces sannanensis 0104 chemical sciences Electronic Optical and Magnetic Materials Fungicide Plant Leaves Horticulture chemistry Agronomy Mycoses Cercospora theae 0210 nano-technology Biotechnology Research Article |
| Zdroj: | IET Nanobiotechnol |
| Popis: | Tea leaves have economic importance in preparation of the popular beverage of the world "tea". Bird's eye spot disease of tea leaves creates significant revenue loss in tea trade of many tea plant cultivating countries. Management of this disease by silver (AgNps) and copper (CuNps) nanoparticles that are biosynthesised by efficient antagonists was studied. The biocontrol agents like Pseudomonas fluorescens, Trichoderma atroviride and Streptomyces sannanensis were evaluated for nanoparticle synthesis against Cercospora theae isolates namely KC10, MC24 and VC38. Initially, the freshly prepared extracellular AgNps showed high disease control (59.42 - 79.76%), but the stability of antagonistic property in stored nanoparticles were significantly high in CuNps (58.71 - 73.81%). Greenhouse studies on various treatments imposed also showed reduced disease incidence percentage of 13.4, 7.57 and 10.11% when treated with CuNps synthesized by P. fluorescens, T. atroviride and S. sannanensis respectively. Various treatment schedule in fields suggested the use of Bionanocopper@1.5 ppm for highest yield (3743 kg/ha) with 66.1% disease prevention. The results suggest the use of biosynthesised CuNps using Streptomyces sannanensis for controlling the tea plant pathogens causing foliar disease with higher stability in releasing the antagonistic activity during sporadic disease incidence of bird's eye spot disease in tea plants. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|