Vol. 7, Special Issue 2, Part B (2023)

Foldscope is a paper microscope based on origami which is easy to use and extremely portable. Paper microscope doesn’t require any special laboratory facilities or high-cost chemicals. The present research study is how foldscope can be used as an efficient and easy tool for farmers to be get known about plant pathogens by seeing symptoms on plant parts. For optical visibility of pathogen glass slides were used along with small diseased plant part and for staining methylene blue or lactophenol have been taken. Various samples from field were observed under foldscope in which various plant pathogens were visible i.e., Alternaria, Fusarium, Rhizoctonia, Helminthosporium and Curvularia from class Deuteromycetes; Albugo candia from class Oomycetes; Aspergillus and Penicilium from class Eurotiomycetes; Ustilago and Uromyces from class Basidiomycetes; Mucor and Rhizopus from class Zygomycetes; Erysiphe, Leveillula and Oidium from class Ascomycetes which causes spots, rotting or blights.