One of the important bacterial diseases of onion is slippy skin wich caused by the bacteria Pseudomonas alliicola. It controled by using antibacterial compound such as Agromycin.

Bacterial diseases are not much common in Indian varieties. But incidence is more in case of long day varieties. For control measures please read following link.

https://www.paorganic.org/bacterial-disease-management-of-onions

Bacteria is not causing severe diseases, cu fungicides are best solution, if pollution is not concern in the state where you are going to apply fungicides.

Thanks for the Suggestions.

Thanks for the Suggestions

Dear Mr. Gawande

please have a look these papers

http://webagris.inra.org.ma/doc/sadik01151.pdf

http://glexpo.org/summaries/2017summaries/Onion.pdf

Best wishes

Please take a look at the following links.

Article Biological Control of Bacterial Onion Diseases using a Bacte...

Article Management of Xanthomonas Leaf Blight of Onion with a Plant ...

Article Management of Xanthomonas Leaf Blight of Onion with Bacterio...

https://www.seminis.com/SiteCollectionDocuments/Onion-Disease-Guide.PDF

One of the important bacterial diseases of onion is slippy skin wich caused by the bacteria Pseudomonas alliicola. It controled by using antibacterial compound such as Agromycin.

Soft rot of onion also is one of the bacterial diseases of onion wich caused by several different bacterial pathogens and it controlled by harvesting the crop in dry conditions and reduced the irrigation.

You can see the attached paper

We can control bacterial diseases of onion by applications of copper-based bactericides mixed with an EBDC fungicide, such as mancozeb, can help slow infection and disease spread. Applications should begin two weeks before bulb initiation and continue at five to 7 day intervals until harvest.

Products used for pests, diseases and weed control should be reviewed individually by your organic certification authority. Certified products may be used only in the case of inadequate preventive, mechanical and physical practices to prevent or control crop, weed and disease pests. The operator shall document the conditions for the use of the substance in the organic system plan. Copper-certified bactericide products should be used in a way that reduces their accumulation in the soil.

Reduce potential sources of bacterial vaccine.

Disease Control. Destruction of cull piles and rotation out of onions for at least 2-3 years are important to help prevent the buildup of inoculum and reduce the likelihood of severe epidemics. Because these cultural practices are only partially effective, and no blast-resistant varieties are available, onion growers must rely upon repeated application of protective fungicides for acceptable disease control. Some farmers in Michigan use a weather-based computer program to schedule fungicide applications, thereby eliminating unnecessary sprays.

Sources

https://www.extension.purdue.edu/extmedia/BP/BP-23-W.html

Hi every one

Pseudomonas aeruginosa (brown rot)

It is very serious disease of onions in storage. The infection occurs through the wounds. The rot begins at the neck of the bulbs which later gives foul smell through the neck when squeezed. Control: Proper curing and rapid drying of the bulbs after harvesting is essential for controlling the disease. Affected bulbs should be discarded before storage. If rains occur during maturity, spraying of Streptocycline (0.02%) is recommended.

Thanks for the Suggestions