Amount of applied K (kg/ha)

Agronomic Use Efficiency of Potassium (kg grain/kg K)

Salima

Dedza

Lilongwe

Mean

Change

Mean

Change

Mean

Change

10

109.01

98.77

13.83

20

79.69

−29.32*

73.90

−24.87*

14.26

0.42

30

51.86

−57.15*

52.50

−46.27*

9.59

−4.24

CV (%)

25.41

21.57

61.46

P (0.05)

0.00

0.00

0.28

Critical D Value

2.38

2.42

2.36