The Effect of Borax in Fertilizers. 



117 



stunted and yellowed appearance similar to that of badly injured 

 plants in the field. Undoubtedly, if allowed to grow, it would 

 have shown the partial recovery that was observed with those 

 plants in the field which produced roots that started near the 

 surface of the ground and penetrated the soil remote from the 

 fertilizer. 



Root injury was less severe where fertilizer was mixed 

 with the soil above and below the seed-piece than where it was 

 placed in drills above and below. Little or no root injury could 

 be found where the fertilizer was mixed with the upper six 

 inches of soil in the pots. However, as has already been stated, 

 it was where the fertilizer was mixed with the soil that most of 

 the tip and marginal injury of the leaves was obtained. The 

 root system of one of the plants where the fertilizer was mixed 

 with the upper six inches of soil is shown in Fig. 26. The ap- 



Fig. 26. Root system of plant shown in Fig. 22. The fertilizer, 

 No. 5549, was mixed with the upper six inches of soil in the pot. The 

 root injury was slight but the leaf injury was marked. 



