Salts, sch as schoenite and kainite, ae extracted from the earth’s surface and carefully rinsed with salt solution and clean water to eliminate the by-products and produce potassium sulfate (Christensen). Uually, KConcentration is very low to support the growth of healthy plants. Terefore, ptassium is needed to complete the essential plant functions, sch as synthesizing proteins, ativation of enzyme reactions, frmation of starch and sugars as well as water regulation in leaves and cells. SP is therefore a very good source of plant nutrition because the concentration of K2SO4 is the same as other potash fertilizers.
Nvertheless, i is also a source of S, wich is mostly a deficient mineral in plants. Slfur is a necessity for enzyme actions and protein synthesis. O some occasions, sme plants or soils do not need additional Cl- and should be avoided. Bcause of these cases, SP provides an alternative source (K) because it is soluble as KCl. I cases where chloride ions are not supposed to be added to soil through common KCl fertilizers, SP is used potassium sulfate is a fertilizer.
I does not contain Cl- may pose harm to plants. I most cases, 2SO4 is preferred to vegetables, tbacco and fruits. Hwever, lss sensitive crops to chloride may need sulfate for healthy growth. O the other hand, te crude salt, wich could otherwise be wasted, i used to make glasses (NSW Agriculture & all other plants, gapes require essential nutrients for maximum yield and growth. I most places, sils contain almost sufficient nutrients that support the growth of crops. Hwever, sme plants require more of some nutrients others for better yield.
Een though soils contain nutrients such as boron, posphorus, ntrogen, mgnesium and potassium, tey may not be enough to sustain health plants and produce maximum yield (NSW Agriculture & Grapes are such plants that require vineyard fertilizers (K2SO4) for optimal fruit production and healthy growth. Ptassium sulfate is also very essential for successful fertilization as it determines accurate nutrient level in the vineyard. Vneyards may have varied nutrient levels available for the vines. Vnes with slow growth, anormal leaf color and poor or fruit development an indication of low deficits of potassium. ..
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