88 BULLETIN 699, U. S. DEPARTMENT OF AGRICULTURE. 
Taste LIII.—Yields per acre of corn, wheat, and hay—average for the 18-year. 
period, 1897-1915. 
Corn. Wheat. 
Plot 
num- Treatment. Sa | |e 
ber Grain. | Stover. | Grain. | Straw. 
Bushels. | Pounds. | Bushels. | Pounds. | Pounds. 
Ji PANONG Sees 2k eo Seen Seer Dnesloce ees 40. 62 2,365 13. 28 1, 543 3,020 
2| Yard manure and raw phosphate............- 63.40 3, 464 24. 94 2, 674 4,357 
8 | Stall manure and raw phosphate............- 66. 75 3,677 26. 46 2, 869 4,765 
Ge BNONOR Secs cee Son oa ate ene PREIS aise eee 32. 38 2,050 ial, 75) 1,370 2, 299 
5 | Yard manure and acid phosphate............ 63. 69 3,372 26. 57 2, 907 4, 260 
6 | Stall manure and acid phosphate............. 67. 04 3,578 27. 06 3,031 4,851 
el NON GHeS face Se cr ba se ok aie eeteyas be ree se 31. 16 1, 982 16. 90 1,319 2,314 
Si vardimanureand) Kainite oc ceceeseeceseece ne 56. 67 3, 232 21. 52 2, 423 3, 547 
9 | Stall manure and kainit..........:......0.-.- 61. 54 3,475 23. 13 2,691 4, 238 
LOS BINGO age a eee eens cclnclo soon ee conan es 34. 14 2,049 11. 14 1,364 2, 488 
We eee GO eee Sesh eee ec edi eos me Pe 38. 97 2,375 14. 40 1, 732 3, 251 
P22 Yard manure and ey psums <2. seeenee este eee 60.62 |. 3,400 24.39 2,712 3, 885 
13 | Stall manure and gypsum...................- 61.48 3, 498 24. 31 2,695 3, 909 
4a NONE ce eisae meee eee esac ran os dee Dae 31.77 2,037 11. 29 1,334 2, 354 
ible Yard manures aintreated sees ers - eens ee ae 52. 85 2,921 20. 72 2, 296 3,300 
16 Stall manure, untreatedo=2--o-- 5-0-2522 se. 2. 59. 37 3,271 - 22.03 2,494 4,000 
IN fa| PAN Karas See eR I NY Re ee Renee ae Ot 37. 94 2,331 11. 59 1,409 2,694 
18)/"Chemicalsfertilizenscassnoseec st iee esate ee 47.78 2,690 16. 16 1, 841 3, 163 
LOB eee Omerssiics a bce SRE NS See a ara as se 45. 20 2,494 15. 42 1, 885 3, 255 
20d NONE Metron bacis ee cee aecles Son eaee ce oe ee eae 33. 88 2,028 10. 72 1,382 2,679 
Average from manure and raw phosphate. 65. 07 3,570 25. 70 2,771 4,561 
Average from manure and acid phosphate. 65. 36 3,475 26. 81 2,969 4,555 © 
Average from manure untreated.......... 56. 11 3, 096 21.37 2,395 3, 668 
Average unmanured yields............... 34.77 2, 153 11. 76 1,395 2,536 
Taste LIV.—Barnyard manure on crops grown in three-year rotation. Average 
annual increase per acre for entire period of experiment figured first accord- 
ing to Thorne, by comparing treated plots with the two nearest check plots, 
and second by comparing treated plots with average of all check plots. 
Average annual increase according to Thorne. 
Plot 
num- Treatment. Corn, 18 crops. Wheat, 18 crops. 
ber. Clover 
—— hay, 15 
Grain. | Stover. | Grain. Straw. CHOPS. 
Bushels. | Pounds. | Bushels. | Pounds. | Pounds. 
Zi Viardumanurejand Moatseeseesseees see selene 25. 53 1, 204 12.17 1,189 1,578 
3) sotallemanunerand: floats see eee eee 30. 95 1,522 14, 20 1, 492 2, 225 
5 | Yard manure and acid phosphate ___......... 31.72 1,344 15. 09 1, 554 1, 956 
6 | Stall manure and acid phosphate............. 30. 48 1,572 15.68 | » 1,693 2,542 
87) Yard manureland: kainit sees. e ee eee 24.11 1 PBY/ 10. 54 1,089 1,176 
97 aStallinraniwme and skate ee seis see 28. 40 1,449 12. 07 1,343 1,807 
12} Yard manure and gypsum .....-2.....::.....- 23. 83 Up Ale 11. 02 1,113 931 
13 sstallmanure and gy psumics-- oeese eles eee ee 27.31 1,348 11. 97 1, 229 1,255 
15) | ard manure, untreated 5s s2ssesee 3s 19. 03 815 9. 33 939 870 
164 sStallimanureuntreatedsa epee cessor eee 23. 48 1,015 10. 46 1,110 1,419 
Spi Chemicalstentihizerlas Seay ea eae ee 10. 74 475 4, 22 394 482 
QE Pees CO KI PS a a a es Pe au 10. 48 400 4, 26 472 635 
1 Acid phosphate, 80 pounds; muriate of potash, 80 pounds; nitrate of soda, 160 pounds. 
2 Acid phosphate, 80 pounds; muriate of potash, 10 pounds; tankage (7-30), 109 pounds 
¢) 
