Black rust of wheat   Host Triticum aestivum Pathogen Puccinia graminis-tritici Symptoms Rust infection is observed in leaves, leaf sheaths, stems, floral structures in the form of rust pustules. Reddish brown pustules appear during the formation of urediniospore. Black pustules appear during the formation of teliospore. On maturity, the teliospore …

For diagnosis of plant disease, it is essential to determine whether the disease is caused by a pathogen or an environmental factor i.e. abiotic factor. It is also important to know whether the disease is infectional or non-infectional. Diagnosis of a disease caused by either a virus, viroids, rickettsia or …

Plant diseases affect the existence, adequate growth and productivity of all kinds of plants. A diseased plant is a plant that cannot carry out all the physiological functions. So, the importance of plant diseases in the agriculture sector is very significant. In the developing countries, 50-80% of the population is …