1902.] 



PUBLIC DOCUMENT — No. 33. 



35 



A. — Soil Test with Grass. (South Acre.) 

 This acre has been used in soil tests for thirteen years, 

 beginning in 1889. The crops in successive years have 

 been as follows : corn, corn, oats, grass and clover, grass 

 and clover, corn, followed by mustard as a catch-crop, rye, 

 soy beans, white mustard, corn, corn, and grass and clover 

 in 1900. The Held has not been ploughed this year but 

 received fertilizers as usual. During the entire thirteen 

 years four of the fourteen plots have received neither 

 manure nor fertilizer ; three plots have received yearly a 

 single important manurial element, viz., one of them nitro- 

 gen, another phosphoric acid and another potash, — every 

 year the same ; three have received each year two of these 

 elements ; one has received all three yearly ; and one each 

 has yearly lime, plaster or manure. Much of the field, 

 having been either entirely unmanured or supplied with 

 only a portion of the elements ordinarily considered as 

 essential, is now much exhausted. The four nothing plots 

 this year produced an average yield of 375 pounds of hay 

 to the acre at the first cut and 313 pounds at the second cut. 

 The table shows the rate of yield of the several plots : — 



Hay and Row en. — South Acre Soil Test, 1901, 



o 



l 



2 

 3 

 4 



5 

 6 



7 

 8 



9 

 10 

 11 



12 

 13 

 14 



Fertilizers used. 



Yield per Acre 

 (Pounds). 



Hay. 



Nitrate of soda 



Dissolved bone-black, 



Nothing 



Muriate of potash, .... 



Lime 



Nothing, 



Manure 



Nitrate of soda and dissolved bone- 

 black. 



Nothing, 



Nitrate of soda and muriate of potash, 



Dissolved bone-black and muriate of 

 potash. 



Nothing, .... . . 



Plaster, 



Nitrate of soda, dissolved bone 

 black and muriate of potash . 



900 

 300 

 400 

 600 

 500 

 300 

 3,600 

 1,200 



400 

 2,100 

 1,900 



400 



200 



3,300 



Rowen. 



550 

 370 

 240 

 700 

 360 

 270 

 2,700 

 530 



360 

 900 



1,500 



380 



200 



1,100 



Gain or Loss per Acre, 



compared with nothing 



Plots (Pounds). 



Hay. 



+500 

 —100 



+233.33 

 +166.67 



+3,300 

 +800 



+1,700 

 +1,500 



—200 

 +2,900 



Rowen. 



+310 

 +130 



+450 

 +100 



+2,340 

 +170 



+533.50 

 +1,126.67 



—180 

 +720 



