It is one of the most important nutrients in plant and is present in various plant organs in almost the same amount of phosphorus, which is a sign like phosphorus, is effective in plant nutrition and growth. Adding it in relatively pure powder or with chemical fertilizers, especially fertilizers that are added to the soil as sulfate, such as ammonium sulfate, potassium sulfate, and even simple superphosphate and triple is common.

It is soluble in water and is the source of potassium and sulfur for the plant. Potassium and sulfur are the most important elements needed by plants. Potassium is a mobile element in the plant. Potassium deficiency causes tree branches to wither and nuts, including pistachios, to shrink, and reducing it weakens the tree against diseases, pests and environmental stresses. Sulfur increases the oil of oily plants such as sunflower, canola and.. Lack of sulfur causes yellowing of leaves of trees and plants. Uzbek potassium sulfate fertilizer is one of the best sources of fertilizer for plants, which is used to feed garden and greenhouse plants.

Introduction: Elemental sulfur is byproduct of natural gas refining which during this process, HS is removed from sour gas and after changes to solid sulfur, it is stored in large block forms. Continuous precipitation of sulfur and its oxidation causes soil acidification and as a result, nutrient cations such as Ca+, Mg+, Na+ and K+ will leach from the soil profile. Also, sulfate accumulation led to soil acidification and accelerates the silicates weathering in upper layer of the soil profile. Accumulation of water soluble sulfate in the soil and increase the nutrient cations leaching from the soil depend on sulfate resistance rate. Also, addition of sulfur to the soil for a long time can cause calcium sulfate formation that will cause problems such as increase in soil salinity. Shahid Hashemi Nezhad gas refinery is located about km south of Sarakhs city and about km east north of Mashhad. In addition to exploiting, refining and producing × m.day- natural gas, recovered sulfur with %/ purity and tons per day production capacity is one of the byproducts of this gas complex.

واحد سولفات آمونیوم پتروشیمی ارومیه در سال با ظرفیت هزار تن در سال، برای تولید سولفات آمونیوم پودری راه اندازی شد؛ این واحد در مرحله اول توسعه از ظرفیت هزار تن در سال به هزار تن و در مرحله دوم به هزار تن در سال افزایش یافت. در مرحله سوم توسعه واحد گرانول سازی نیز به این مجموعه اضافه شد.

گوگرد به صورت آزاد و به صورت ترکیبی، موارد مصرف زیادی دارد ولی بیشترین کاربرد آن برای تهیه ترکیبات شیمیایی و فرآورده های میانی در چرخه صنعت می‌باشد. بیشترین مصرف گوگرد در سال‌های اخیر در صنایع کشاورزی و تهیه کودهای فسفاته بوده که برای پائین آوردن PH خاک کشاورزی و تولید اسید سولفوریک، کبریت سازی، سمپاشی قارچ‌ها، سپیدک‌ها و حشره کش‌ها معمولاً به صورت مستقیم مصرف می‌شود.