76 BULLETIN 699, U. S. DEPARTMENT OF AGRICULTURE. 
Lime was also applied at the rate of 2,000 pounds per acre every 
four years. The first fertilizer applications were made in 1908, but 
in 1907 a crop of cowpeas was grown on the entire tract in order to’ 
compare the drained and undrained areas. 
The results of five years’ work with the fertilizer treatments men- 
tioned above are given in Table XLIII. 
TABLE XLIII.—Yields of corn, oats, wheat, and cowpeas obtained on tiled and 
untiled land at Vandalia, Mo. (1908-1912). 
Yield of various crops per acre. 
Appli- 
“ee cation Corn (1908). _ Oats (1909). Wheat (1910). 
Fertilizer. per 
acre. 
: Un- = Un- ae Un- 
Drained. drained. Drained. drained. Drained. drained. 
Tons 
Manure it tee ee ao ee os ee 18 
prior Bushels. Bushels. | Bushels. | Bushels. | Bushels. | Bushels. 
Rock phosphate ey ees eee eee 1 600 | 33. i 31. 6 63. 54. 8 16. 4 aR Is 9 
ILE SUIMCG Sas aot es tees eee a esas es 
Manure 5 sere ee LN Ie 8 
Pian ae eae See \ 34.4 26.5 58.5 57.4 12.4 10.2 
| BNR R ot? Se oh aaltepet epg ste 31.6 26.3 56.9 | °= 52:2 9.0 5.1 
DOtastoac ce eee ees eee a = =e 
REO as aati arA \ 33.9 31.8 52.6 45.5 12.4 9.6 
NFO UNI ORs ates oa ee gee a eae 
One Meals Se tae eee 2150 Tote 28.6 52.9 47.6 11.9 io 
Potassium chloride............- 2 50 
INO fertihZer <2 5! eee eee ee 32.4 25.5 47.9 38.8 8.5 4.5 
Legume. ES a Pee IRN: eee ! 
Bone:wmeg es sa eee eee 2150 
Potassium chloride. : 1.2.0... 2 50 38.2 31.0 56. 2 51.1 10.2 10.2 
TA Vii( Sa © enn te La 2, 000 
Yield of various crops per acre. 
Applica- 
Fertilizer. tion per Cowpea hay (1911). Corn (1912). 
acre. 
Drained. | Undrained.| Drained. | Undrained. 
Tons | 
Manures 23 22 ere eae cone wesc ered oe 18 | 
| Pounds. Pounds. Bushels. | Bushels. 
Pounds 4 1 AAT 2 2 f. 
‘Rock phosphatesssiqa-a. tee to eee 1 600 1,372 1, 467 47.8 43.6 
WON CS hee a Peer ee ented oe Seine nie See a eee eee 
Manure. ££ iy. Soest a ge fl i eee 8 ; 
peng tivo Se eae enmeaetied darters \ 1,227 1,199 44.9 41.0 
D0. 1 a ee Oe Ee Haass + Fine | 2,018 1,171 40.6 33.2 
ID) Obes 2 SEAR ESE EEE pera ene Ee Bh: Se aS Pee aera a ees — 
Bone scale 2 eee bas ae 2 150 1,772 1,691 43.6 41.7 
Dah S34 (epee ei ah 8 ill ok Sailr ys rape etl | Noe eal cage 
Bone;meal: 2055555 Seer soe ee os ee ae 2 150 1, 603 1, 548 44.5 40.8 
Potassium chloride...........--. seh Se Fae ncaa 250 
Novsertilizerns: © Cee Steir aes 2-5 hey}. Ce es | 1, 492 1, 152 42.9 40.8 
ORIG oe aca 2s Sat ees Se ee rae ae ea eee eee 
BOnEMeARS? Se pe Be ee oe eee 2150 | = : 
Poigsstpmschlorid Gs...) ae ee 250 | 1, 949 1,315 47.2 52.6 
Biniece. S-> be oe hy eee 2, 000 | 
1 Once every four years. 2 Applied before corn and again before wheat. 
d 
