48 



part of the kainit was donated by the German Kali Works, 

 New York City. 



In each experinient two plots were left unfertilized, these 

 being plots 3 and 8. The following table shows what kinds 

 and amountis of fertilizers were used on certain plots; the 

 number of pounds of nitrogen, phosphoric acid, and potash 

 supplied per acre by each fertilizer mixture; and the per- 

 centage composition and cost per ton of each mixture, the 

 latter being given in order that these mixtures may be 

 readily compared with various brands of prepared guanos: 



Pounds per acre of fertilizers^ nitrogen^ phosphoric acid, and 

 potash used and composition of each mixture. 



o 

 "A 



o 



1 



2 



4 



Fertilizers. 



o 



a 



3 



o 



ifts. 

 200 



240 



200 



200 

 240 



200 

 200 



240 

 200 



200 

 240 

 200 



200 

 240 

 100 



Kind. 



Cottonseed meal 



In 100 lbs,, c. s. meal.* 

 Acid phosphate 



In 100 lbs. acid phos. 

 Kainit 



In 100 lbs. kainit. 



Cottonseed meal 



Acid phosphate 



In 100 lbs, above mixt. 



Cottonseed meal 



Kainit 



In 100 lbs. above mixt. 



Acid phosphate 



Kainit 



In 100 lbs. above mixt. 



Cottonseed meal 



Acid phosphate 



Kainit 



In 100 lbs. above mixt. 



Cottonseed meal 



Acid phosphate 



Kainit 



In 100 lbs. above mixt. 



MIXTURE CONTAINS 



c 



to 

 o 



Lbs. 

 13.58 

 6.79 



13.58 

 3.09 



13.58 

 3.39 



13.58 

 2.12 



13.58 

 2.59 



09 



o . 



3.2 



> & 



Lbs. 



5.76 



2.88 



36.12 



15.05 



41.88 

 9.52 

 5.76 

 1.44 



8.21 

 41.88 



6.54 

 41.88 



7.75 



o 



Ah 



Lbs. 

 3.54 

 1.77 



24.60 

 12.30 



3.54 



.80 



28.14 



7.03 



5.59 

 28.14 



4.39 

 15.84 



2.93 



o 



3 



a. 



43 



o 



$19.00 

 11.00 

 13.75 



14.60 



16.38 



12.26 



14.38 



14.44 



* Average of many analyses. 



t Counting all of the phosphoric acid in cottonseed meal as 

 available. 



