93 



Fi:utilizi:hs ioh Sov Beans 



III \\H)l and I'Mli; IVrlilizcr tests \\c>ic made by Pro- 

 fessor J. V. l)iii*i*ar on sandy loam lo dc'tcrminr the 

 value of |)h()S|)lu)iic aeid. potasli. and nitrogen on soy 

 beans. Tbe 11)01 test followed an expeiiment in erim- 

 son clover wbicb failed. Tbe 1906 test (A) followed 

 crimson clover cut for bay, and test (H) followed a 

 cro|) of peanuts. Tlie beans were planted about May 

 20, and mowed for bay a])out Septeud)er 10. 

 Tahij-: I. — Fertilizer Test fur Hay 



Yield of Soil Ilcdii Uai; W^hen the Folloiviiuf Ferlilizcr Was 



Used Per Acre. 



From tbe yield of bay in tbe tbree experiments re- 

 corded in Table 1. acid pbospbate gave an average in- 

 crease of ,101 pounds, and potasb gave no increase. 

 Wben tbe potasb was combined witb acid pbospbate, 

 no appreciable increase attributable to tbe kainil was 

 secured. From tbe addition of 48 pounds of nitrate 

 of soda lo kainit and acid [)bosi)bate. no increase at- 

 tributable to eitber potasb or nitrate of soda was 

 secured. 



In tbe above experiments acid pbospbate was tbe 

 only fertilizer Ibat i)ai(l for its use. 



Wben tbe amount of acid pbospbate in cond)ination 

 witb tbe 210 pounds of kainit per acre was doubled, 

 tbe increased yield of bay (\\\v to tbe |)bospbate was 

 sligblly more tban doubled; but wben tbe amount of 

 kainit witb 240 i)ounds of acid pbospbate was doubled 

 tbe increased vield due to i)()lasb was ni'gligible. 

 Fi:iniMzi:H Tkst i-oh Skkd and IIav 



Tbe experiments recorded in Table 11 sliow in a 

 general way tbe ell'ects of fertilizing elements on soy 



