What is the pH value of a water-logged field, if the top soil has become alkaline and water logged?

When, pH = 7 to 8.5 normal yields. (Best suited pH for maximum yields)
When, pH = 8.0 to 9.0 yield decreases and partially infertile
When, pH = 11 soil becomes more alkaline and infertile
Note: –
Water logging may be defined as the increase in water-table which lead to decreased productivity of the land. Whenever there is water-logging, there will always be salinity. And hence soil becomes alkaline.
Causes of water logging: –
Over and intensive irrigation
Seepage of water from adjoining high lands
Seepage of water through canals.
Inadequate natural drainage.
Excessive rainfall
Submergence due to floods.
Kye point –
Crop Logging: Tracking crop growth and development.
Crop Lodging: Plants falling over due to environmental factors.
Water Logging: Soil saturation with water, affecting plant health.