Yes. When dissolving incremental amounts of ammonium sulfate (AMS) up to 17 pounds per 100 gallons (covering typical AMS recommended rates as herbicide adjuvant) water pH went gradually down from 7.67 to 6.30.
pH
Yes, it is possible to create a reservoir of sulfur through long-term application of elemental sulfur. Be aware, though, that elemental sulfur oxidation produces acidity. So, with time, it may gradually decrease soil pH to the point …
Even under calcareous conditions (soil pH 7.6-8.2), ammonium sulfate would still be less volatile than urea. This is because urea hydrolysis raises pH to significantly higher levels (as high as 9.0).
It depends on the rates used. Applied at rates that just cover a crop’s sulfur needs, neither one would do, regardless of the soil type. When thinking of these products as soil amendments, 200 to 400 pounds …
Assuming a soil of low buffering capacity (low clay and organic matter contents), and as long as you apply it at rates that cover all of your crop’s nitrogen needs, ammonium sulfate could indeed be a really …
As a matter of fact, ammonium sulfate is recommended more than other nitrogen sources on high pH soils (common in Texas) because of its acidifying effect. It temporarily increases the availability of micronutrients, such as iron and …
At rates of several hundred pounds of ammonium sulfate per acre, the acidifying effect of ammonium sulfate would be in the order of hundredths of a pH unit. Based on a nitrogen rate of 140 pounds per …
At the low rates required to satisfy a crop’s sulfur needs, the acidifying effect of ammonium sulfate is insignificant – in the order of thousandths of a pH unit. Based on a calculation, for a sulfur rate …
Based on the Association of Official Analytical Chemists’ (AOAC) adopted figures, in order to neutralize 200 pounds of ammonium sulfate per acre, 226 pounds of calcium carbonate (CaCO3) per acre would be required (5.4 kilograms of CaCO3 …