CITRIC-SOLUBLE PHOSPHORIC ACID AND POTASH. 



11 



Table VII. — Relative green weights of wheat plants grown for a period of three 

 weeks in Hagerstown loam untreated and treated with various quantities 

 of potassic and phosphatic fertilizers. 





Application per acre. 



Relative 



green 



weights. 



Average. 





K 2 0. 



P2O5. 



Check 



Pounds. 



Pounds. 



100 

 101 

 107 

 106 

 122 

 129 

 130 

 101 

 102 

 101 

 111 

 116 

 136 



100 



Slag (33SB) 



50 

 100 

 200 



50 

 100 

 200 



60 

 120 



240 



\ 105 



Do 



Do 





1 



Do 





I 127 



Do 





J 





60 

 120 

 240 



60 

 120 

 240 



1 



Do 





)■ 101 



Do 





J 





50 

 100 



200 



J 



Do 



I 121 



Do 



J 







Table VIII. — Relative green weights of wheat plant grown for a period of three 

 weeks in Volusia silt loam, untreated and treated with various quantities of 

 potassic and phosphatic fertilizers. 



Treatment. 



Application per acre. 



Relative 



green 

 weights. 



Average. 



K 2 0. 



P2O5. 



Check 



Pounds. 



Pounds. 



100 

 113 

 114 

 109 

 124 

 117 

 107 

 109 

 113 

 128 

 116 

 119 

 109 



100 



Slag f 33SB i 



50 

 100 

 200 



50 

 100 

 200 



60 

 120 



240 



1 



Do 



\ 112 



Do... 



J 





1 



Do 





\ 116 



Da. 



60 

 120 

 240 



60 

 120 

 240" 



J 







Do.. 





\ 117 



Do 





J 





50 

 100 

 200 



) 



Do : 



\ 115 



Do 









Table IX. — Relative green weights of wheat plants grown for a period of three 

 weeks in limed Volusia silt loam, untreated and treated with various quanti- 

 ties of potassic and phosphatic fertilizers. 



Treatment. 



Application per acre. 



Relative 



green 

 weights . 



Average. 



K 2 0. 



P 2 O s . 



Check 



Pounds. 



Pounds. 



100 

 104 

 110 

 135 

 99 

 142 

 100 

 129 

 124 

 116 

 110 

 118 

 103 



100 



Slag (33SB) 



50 

 100 

 200 



50 

 100 



200 



60 



120 

 240 



1 



Do 



[ 116 



Do 





Potassium sulphate 



I 



Do 





]■ 114 



Do 





J 



Acid phosphate 



60 

 120 



240 

 60 

 120 

 240 



1 



Do 





[ 123 



Do 





1 



Potassium sulphate and acid phosphate 



50 

 100 

 200 



1 



Do 



\ 110 



Do 









