Brak in its Relation to Irkigation. 



15 



Plate I. 



Photograph of part of a field of mealies. The mealies in the foreground and in the 

 background have grown well, and have tasselled. The dark line running 

 . thnjugh the centre of the mealie field marks the boundary of an area of very 

 slow and inferior growth resulting from bad texture of the soil prr.duced by the 

 action of exi'ess of water. This area of poor growth is seen to beiter advantage 

 in Plate II, which is reproduced from a photograph taken from a point at right 

 angles to the position from which the above photograph was taken. 



Plate II 



Another view of the field of mealies which appears in Plate I. The plants in dark 

 area are of poor growth and have not yet tasselled. Many of them are also 

 yellowish in colour. Note area of superior fully tasselled growth surrounding 

 this patch. 



