PHYSIOLOGY AND MINERAL NUTRITION 



105 



Courtesy Florida Agricultural Experiment Station 



Figure 5— Dixie Runner peanuts showing the effect of 10 pounds per acre of copper 



chloride applied to Arredonda loamy fine sand before seeding. Right, complete 



fertilizer, including microelements ; left, complete fertilizer, only copper omitted. 



Courtesy Florida Agricultural Experiment Station 



Figure 6. — Foliage of G. F. A. Spanish peanuts grown on soil treated before seeding 

 with a complete fertilizer and all microelements, except copper. Note the extreme 

 copper deficiency symptoms. The few yellowish-white spots are associated with 

 the deficiency, but the relationship of the dark leaf spots has not been in- 

 vestigated. 



