WHEAT. 



129 



able to do and the result is a lessened yield of wheat, 



very much in proportion to the vigor of the rust plant. 



Anything which will favor the growth of the wheat, 



without favoring the growth of the rust plant in 



Red rust spores of wheat 

 rust. 



W^''w: 



m 



m 



Black rust spore of wheat 

 rnst. 



a corresponding degree, enables the wheat plant to 

 resist the ravages of the rust plant. 



About the time the wheat is in the milk, elongated, 

 orange colored spots appear upon the leaves and stems 



