K2SO4


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K2SO4

Formula for potassium sulfate.
CAS # 7778-80-5
References in periodicals archive ?
K was given to the crop through K2SO4 fertilizer (50% K2O) as per treatment plan.
Foliar application of 2 and 5% K2SO4 before silking can significantly improve grain number and grain yield in drought-stressed maize.
A 40 g sample of moist soil was split into two portions shaken at 250 rev/min with 100 ml K2SO4 and filtered.
Soil NH +-N was extracted by 1M KCl and was determined following the procedure of Anderson and Ingram [8] while NO --N was determined colorimetrically after extraction by 0.5 M K2SO4 [9].
All of P, K, S and half of N was applied at the time of sowing in the form of DAP, K2So4, and urea, respectively.
Schoenite is a mixed potassium magnesium mineral, with a formula of K2Mg(SO4)2.6(H2O), which is likely to be an intermediate product from this brine, which then requires treatment to extract the potassium sulphate (K2SO4, which is a saleable product).
The composition of solution was: 5 mM Ca (NO3K 1.75 mM K2SO4, 1.25 mM MgSO4, 0.25 mM HCl, 1.5 [micro]M Fe (III)-EDTA, 25 [micro]M [H.sub.3]B[O.sub.3], 1.5 [micro]M ZnS[O.sub.4], 0.5[micro]M CuS[O.sub.4], 0.025[micro]M [(N[H.sub.4]).sub.6][Mo.sub.7][O.sub.24] and 0.25 mM K[H.sub.2]P[O.sub.4].
Nitrogen was determined using mocr-Kjeldahl method using K2SO4 and CuSO4 mixture as digestion catalyst and phosphorus was determined in a spectrohotometer (model Novaspect II).
The nutrient medium with K+ contained the following macronutrients: 0.6 mM NH4NO3, 0.2 mM NH4H2PO4, 0.34 mM K2SO4, 0.34 mM KCl, 0.38 mM Ca(NO3)2, and 0.2 mM MgSO4, and the following micronutrients: 4 uM MnCl2*4H2O, 8 uM H3BO3, 0.12 uM CuSO4*5H2O, 0.3 uM ZnSO4*7H2O, 0.07 uM MoO3, and 20 uM Fe-EDTA.
A uniform fertilizer dose of 200 kg N, 90 kg P2O5 and 90 kg K2SO4 was applied.