Rising soil acidity across many farms is dealing a heavy blow to crop yields that keep dwindling by the season. Soil analysis conducted across farms in 25 counties in 2014 revealed high acidity levels far beyond the acceptable limit. During the fermentation natural microorganisms break down the manure to produce biogas (in the form of methane gas). She says that while liming materials produce negative ions such as hydroxyl, bicarbonate or carbonates to neutralise soil acidity, inorganic materials such as bioslurry produce negative charges that bind and remove the ions causing the acidity. “If the soil does not have a negative charge it will not hold water or nutrients,” the soil expert explains.

Source: Daily Nation March 20, 2020 16:40 UTC