|
PAS 1
|
"The study was conducted in major 20 maize growing districts of Bangladesh for analysis of maize diseases. In this study, twenty farmers per district were interviewed through pretested questionnaires for collecting data on maize diseases. Diseased sample were collected for identifying causal organism. Isolations of causal organism were done in the M.S. laboratory, Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka. The major and minor diseases were determined by observing the prevalence of diseases in the field and opiniosn expressed by the farmers. Considering their opinion and field observations, 21 diseases of maize were identified including seedling blight, stalk rot, root rot, sheath blight, sheath rot, ear rot, bacterial leaf blight, may disleaf blight, Brown spot, tarcicum leaf blight, gray leaf spot, sugarcane mosaic, downy mildew, maize streak, maize stripe, maize dwarf mosaic, anthracnose, cob rot, store grain rot, cob sheath rot and cob sheath blight. The prevalent major diseases were stalk rot, leaf spot, root rot, cob rot, sheath blight, sheath rot, cob sheath blight, cob sheath rot, leaf blight, bacterial leaf blight, maize dwarf mosaic virus, corn stunt, leaf virus, and maize streak virus. Seedling and reproductive stages were found to be more vulnerable to diseases. There was a positive and high degree of relationship among insect pest and disease incidence with weed infestation. The probable sources of maize diseases were seed borne diseases from outside of the country (cross boundary), imported hybrid seeds and infested soil. According to the opinion of the participants, proper training on quarantine diseases, improvement of quarantine laboratory and strengthening of quarantine law could be the best way for improvement of quarantine disease situation of maize." https://www.jscimedcentral.com/PlantBiology/plantbiology-5-1076.pdf
|
