Clay, loam
Available K : 120-280 kg ha-1
apply  K2O @ 30 kg ha-1 (67 MOP ha-1) 
Available K< 120 kg ha-1
Apply 25 % more K2O
Available K>280 kgha-1  Apply 25 % less K2O
Single
basal application 
Available K : 120-280 kg ha-1
apply  K2O @ 30 kg ha-1 (67 MOP ha-1) 
Available K< 120 kg ha-1
Apply 25 % more K2O
Available K>280 kgha-1  Apply 25 % less K2O
Single
basal application