Write any three plant diseases and their mode of transmission
Answers
Bacterial Canker. ...
- Black Knot. ...
- Blossom End Rot. ...
- Brown Rot. ...
- Cedar Apple Rust. ...
- Club Root.
The club root pathogen may survive in infested soil 10 years or more. The disease is spread from one area to another by diseased transplants, infested surface-drainage water, manure, crop refuse, and soil on shoes, tools, and equipment. Clubroot is most severe in cool, poorly drained, acid to neutral soils.
Bacterial canker. infections occur during fall, winter and early spring (during cool, wet weather) and are spread by rain or water, and pruning tools. The bacteria overwinter in active cankers, in infected buds and on the surface of infected and healthy trees and weeds.
Answer: there are some type of plant diseases
(1) Tobacco mosaic virus,
(2) Tomato spotted wilt virus,
(3) Tomato yellow leaf curl virus.
Explanation:
Ring rot and Brown rot of potato caused by bacteria are carried internally through the tubers. The well known whip smut and red rot of sugarcane are fungal diseases carried internally in the planting sets. Mosaic and leaf roll of potato which are viral diseases are also carried inside the infected tubers.