Soil water potential checking: a gypsum block may be inserted into the soil, and its electrical resistance can be measured to derive soil dampness.[forty eight] Gypsum is considered non-poisonous, but extended exposure to dust can cause respiratory problems like asthma. Inhalation of large quantities of dust over time may possibly https://www.propanraya.com/id/produk/eco-gypsum-ee-4050