Plants in the rainforest tend to grow at an optimal pH of 5-6, therefore that is around the average pH level of the soil found in tropical rainforests.
6
pH 4
Soil pH is the pH value of the particular soil mixture.AnswerIt is a measure of the degree of acidity or alkalinity in the soil. 7 is neutral on the scale.
The pH value may be very variable.
Depending on the type of soil, the value of pH and the type of pH paper. For an acid soil the pH paper from Merck (art. 9565) this color will be probable green.
I'm not sure about this, but I think if you know the pH value of the soil, then you can plant specific plants and crops and they will not be harmed by the soil. ;)
While I can't find a specific pH value - it is certainly acidic - as it's used to 'neutralise' alkaline soil.
soil fertility increases soil PH
6-6.5
Knowing the pH value, enables the farmer to treat the soil to make it more acidic or alkaline - in order to make it suitable for the crops he wants to grow.
The pH value of a soil is influenced by the kinds of parent materials from which the soil was formed. Soils formed from basic rocks have a higher pH than soil formed from acidic rocks. Water passing through soil leach nutrients such as calcium and magnesium. These nutrients are replaced by acidic elements such as aluminum and iron. Therefore soil that is formed under high rainfall are more acidic than soil that is formed under arid conditions.
to change the pH of soil
Average pH of soil is between pH 4.0 and 8.5.