An example of a plant with discoloured foliage and poor growth which could be caused by strongly alkaline soils. (above image)
Soil pH and the role it plays in plant growth can be very confusing. It is dealt with here because a common response to poor growth is to apply extra water and / or fertiliser when the problem may actually be due to the soil's pH level.
Soil pH can be made worse when irrigating from ground water bores which in recent times have begun to deteriorate in quality due to overuse.