5 M K2SO4
extractable NH4 N and NO3 N nitrogen were determined by colorimetry (Automated chemistry analyzer) only in extracts from the non-fumigated soil samples at 660 and 545 nm, respectively.
While, potassium treatments included foliar sprays of 0, 1, 2 and 5% K2SO4
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).
For no K+ treatment, K2SO4
and KCl were omitted from the nutrient medium.
A uniform fertilizer dose of 200 kg N, 90 kg P2O5 and 90 kg K2SO4
As smoke ages, KCl particles may react with gaseous acids to form K2SO4
and KNO3 [ 23 ] High chloride in this factor may be primarily from coal burning in power plants and in brick kilns [24 ] .
Phosphorus, potassium and nitrogen as per treatment were applied in the form of single super phosphate, K2SO4
soil application of K2SO4
@ 70 Kg ha-1 (T1), foliar application of KNO3 @ 0.
Five grams of catalyst mixture containing CuSO4 and K2SO4
(9:1) and25 ml of concentrated H2SO4 were added.
3 g potassium as K2SO4
one week after the first harvest.
2H2O and potassium sulphate as K2SO4
5 M K2SO4
and horizontal shaking at 200 revs min-1 shaking for 30 minutes.