In a sol-gel process the sol is modified to the gel by the change of the pH-value of the sol, whereby in order to change the pH-value at least one salt is added to the sol.

The diversity of soil bacteria is largely dictated by the pH of the soil.

Making the decision starts with soil testing to determine the existing pH of the soil.

Making the decision starts with soil testing to determine the existing pH of the soil.

In particular, it relates to compositions comprising olivine for use as a soil p H neutralizer, soil conditioner and/or soil fertilizer.

The color of the flowers depends on the pH level of the soil.

Walnut is fairly versatile when it comes to soil pH.

Another issue related to soil drainage problems is soil pH.

The pH of soil is raised by adding dolomite lime to the soil.

It also tolerates a variety of pH levels, but prefers slightly acidic.

8. pH balance: The pH balance of soil can affect the color of certain flowers.

It tolerates most pH of soil, although it prefers an neutral to acid pH.

Soil analysis results also often contain the soil texture, organic matter content and the soil pH.

It specially modifies soil without affecting its pH.

Its use also helps in regulating the pH of the soil.