PLATE VI. 



CAL CARBONATE 9 GRAMS 

 MftlNITE A B GRAMS 

 J'JhWSfWATE 4 5 



CAL CARBONATe 9 GRAMS 

 KAINITE 4 S 

 PHOSPHATE 4 S 

 NITRATE 4 S 



44 



CAL CARBONATE 9 GRAMS 

 KAINITE 4 S GRAMS 

 PHOSPHATE 4 S 



NITRATE 4 5 



OIHYOROXYSTEARIC 



ACIO 3 GRAMS 



Fig. 1. 



Immediate effect of dihydroxystearic acid on oats 

 wlien used in connection with a complete fertilizer. 



CHECK 



TO pwv'iOMn r''iv 



KAINITC 4 S GRAMS 

 PHOSPHATE 4 S 



NITRATE 4 S 



T CORN K PS N 



CAL 



CARBON dTE 



HAINITC 4 S 

 PHOSPHATE 4 S 

 NITHATE 4 S 



"'O rnPN -K pj( N 



K&'NITC 4 e CRAMS 

 PHOSPHATE 4 S 



N'TRATC _ A 6 

 OIHYDRDXYSTEAHIC 



ACID 9 GRAMS 

 nnN-K Pi N 



Fig. 2. Hesidual effect on corn of diii\ droxystcaric acid ap- 

 plied to previous crop of oats. 



