WHEAT CULTURE. 



353 



Distinction from Take-all. — The main naked-eye difference from Take- 

 all disease due bo Ophiobolus graminis are summarised : — 



Take-alt. 

 1. Base of stems blackened. 



( >ccurs in patches. 



Whiteheads rarely contain grain. 



Ears bleached white. 



Foot lint. 

 I . Base of stems brown or tobacco 



coloured, and, on dying, 



ashen-grey. 

 ■2. < Occurs in patches and scattered 



through a crop as well. 



3. Some of the ears contain grain 



in a pinched condition. 



4. Ears rarely bleached quite 



white, but have a faded dull 

 appearance, and may be more 

 or less Hat-sided. 



Fig. 20.— Another Plant affected by Foot Rot. 



Note again the poor root system and scanty stooling. The 

 straw is dark-brown at the ground level. 



I 54797 M 



