most spiders in the garden is a good thing
I hope you get your soil Ph figured out
17th Apr, 2020
Himanshu Verma
G. B. Pant University of Agriculture and Technology, Pantnagar
Natural reason of soil acidity or extremely lower pH is rainfall...in area recieving ample amount of rainfall whereby all the base forming cations like Ca Mg K and Na leaches down beyond the root zone and accumulation of hydrogen ions...but it take longer period of time to make soil acidic...another reason of low pH is type and kind of parent materials by which soil is being formed like basalt, granite etc accordingly soil will become acidic or basic
There are again some of the management aspects by which pH may get reduced or tends towards acidity ..addition of organic matter also bring down soil pH as after decomposition of organic matter, secretion of some acids lead to lowering soil pH...
Another might be type and kind of chemical fertilizers application in the soil, example if we are going to apply ammonical fertilizers, as its residual product is acid, which make soil acidic, however application of nitrate fertilizers cause enhancement of soil pH value towards basicity....
Another reason might be deficiencies of certain base forming cations like Ca, Mg K etc, by which there will be lack of hydrogen ions as well as Fe, Mn etc...and if soil is rich in Fe mineral, then Fe will compete with Ca and Mg compound, thereby they got precipitated...hence reduce soil pH...
Again there are many more factors which are responsible for lowering soil pH...