Department of Agriculture 



35 



(I^lfaSjureEi'-'- 



6do 



appH 



Fig. 11. Graph showing average yields of the two most fertile acres (left) 

 and the two poorest acres, (right), of the WPA fertilizer test, Mad- 

 ison county, Fla., 193 6. 



On the fertile plats, heavy applications of 4-8-4 at planting 

 gave good returns, whereas the side application of nitrate of 

 soda gave poor returns. On the lighter soil, heavy applica- 

 tions of 4-8-4 at planting gave poor returns except v^here it 

 was supplemented by a side application of nitrate of soda. 



