(1) Do not contact or mix with other alkaline fertilizers or alkaline substances to prevent reducing fertilizer efficiency.
(2) It is not advisable to apply ammonium sulfate on the same farmland for a long time, otherwise the soil will become acidic and cause compaction. If it is necessary to apply it, some lime or organic fertilizer can be applied in an appropriate amount. However, care must be taken not to mix with lime to prevent ammonium sulfate from decomposing and causing nitrogen loss. Generally, the combined application of the two will be separated by 3 to 5 days.
(3) Not suitable for application on acid soil. It is obtained by crystallization, centrifugal separation and drying after neutralization of ammonium hydroxide and sulfuric acid.