Treatment

A

gs

Ci

E

WUE

Ci/Ca

A/gs

DAP

42

47

42

47

42

47

42

47

42

47

42

47

42

47

CO2 level (A)

**

**

***

***

**

NS

***

***

***

*

***

NS

***

NS

Soil moisture (B)

*

**

NS

NS

NS

NS

NS

*

NS

NS

NS

NS

NS

NS

AXB

*

*

NS

NS

NS

NS

NS

NS

*

NS

NS

NS

NS

NS