EFFECT OF BORDEAUX MIXTURE ON TRANSPIRATION 



83 



consecutively in the day) at which the tests were made, and the 

 ordinates represent the index values for entire leaf surfaces. 

 The heavy black line indicates the march of the transpiring 

 power of the sprayed leaves, the narrow unbroken line and the 

 broken line represent the march of corresponding indices for the 



.35 - 

 .30 - 

 .25 



.20 

 .15 - 

 .10 - 

 .05 



August 18 





August 14 



9 iO 11 12 13 14 15 15 17 18 



-I I I I I 1 I I I I 



Fig. 1. Graphs showing the march of average foliar transpiring power of 

 sprayed and unsprayed leaves of tomato plants, from hour 5 to hour 18, of August 

 10 and 14, and from hour 9 to hour 18, of August 18. Series A, sprayed leaves; 

 series B, unsprayed leaves on the same plant as the sprayed leaves; secies C, 

 leaves of an unsprayed plant. 



THE PLANT WORLD, VOL. 20, NO. 3 



