8 BULLETIN 441, U. S. DEPARTMENT OF AGRICULTURE. 
For the 1914 crops, lime (CaC0 3 ) was added to all the plats at the 
rate of 2,000 pounds per acre, except the timothy and bean plats, 
winch received an application of 500 pounds per acre. To the timothy 
plats lime was added on the surface to the sod; on the other plats the 
lime was applied to the surface and well harrowed, so as to thoroughly 
mix the lime with the soil to a considerable depth. The reaction of 
the soil was tested four weeks after the lime was applied and period- 
ically during the growing season. The soil hi all the plats showed 
no acidity during the entire season. 
The manganese sulphate was applied and the crops were grown in 
1914 as before. The yields for the year are given in Table VI. 
Table VI. — Effect of manganese sulphate on the yields of wheat, rye, timothy, beans, 
corn, cowpeas, and potatoes in 1914- 
Area and treatment. 
Wheat. 
Eye. 
Timo- 
thy. 
Beans. 
Corn. 
Cow- 
peas. 
Pods. 
Vines. 
Stover. 
Ears. 
Per square rod: 
Untreated 
Treated with 
MnS04 
Lbs. 
23 
28 
3,680 
4,480 
Lbs. 
37 
57 
5,920 
9,120 
£6*. 
38 
43 
6,080 
6,880 
Lbs. ; Lbs. 
17 20 
20 24 
2,720 : 3,200 
3 200 3 840 
Lbs. 
28 
31 
4,480 
4,960 
Lbs. 
14 
16 
Bush. 
32 
36 
Lbs. 
23 
27 
3,680 
4,320 
21 
Bush. 
Per acre (calculated): 
Untreated 
Treated with 
MnS0 4 ... 
61 
56 
Table VI shows that the manganese-treated plat with each crop 
except potatoes produced a larger yield than its check. The largest 
increase was with the rye crop. The grain was thrashed in this case, 
the check plat yielding' 4 pounds of gram and the manganese plat 
7i pounds. The straw was increased 3,200 pounds per acre. The 
rye growing on the check and manganese plats is shown hi figures 
1 and 2 and the harvested straw and grain in figure 3. In the case 
of the other crops wheat was increased 800 pounds, timothy 800 
pounds, bean vines 640 pounds, bean pods 480 pounds, corn stover 
480 pounds, corn grain 4 bushels, and cowpea hay 640 pounds per 
acre. With potatoes, there was no increase; hi fact, a decrease of 5 
bushels per acre is shown. 
For the 1915 crop all the plats were again linied at the rate of 
2,000 pounds per acre, the lime being applied in the fall of 1914. 
The manganese was applied as usual. Acidity tests of the soil were 
made periodically, and again the soil was found not to become acid 
during the growing season of 1915. The yields fcr 1915 are given 
in Table VII. 
