Symptoms :

• The symptoms appear on unripe fruits at the blossom-end.
• Infected fruits show small, conspicuous, white or light brown and circular spots.
• As the fruits ripen, the spots extend and cover the fruit surface.
• The infected tissues become softer and emit an undesirable odour.

Management:

• Bordeaux mixture – 0.4% or Copper oxychloride – 0.2 %, Zineb – 0.2%

Image source:

http://midh.gov.in/technology/IPM-GUAVA-Revised-Sept2011.pdf