Jan. i2,1924 
Water Requirement of Rust-Infected Wheat 
“3 
each culture, great reliance can not be placed on these results; yet, taking 
mto account the extent of agreement within each culture indicated by the 
computation of the probable error, certain significant differences appear 
to result from some of the treatments. 
Table II.— Yield and water requirement of Marquis wheat plants grown in each of ten 
cultures, consisting of four replicate crocks, in rusted and rust-free series 
Culture. 
OO: 
Stem rust... 
Leaf rust 
Control. 
OA: 
Stem rust... 
Leaf rust 
Control. 
OB: 
Stem rust... 
Leaf rust 
Control. 
IA: 
Stem rust... 
Leaf rust.... 
Control. 
IB: 
Stem rust... 
Leaf rust.... 
Control. 
IIA: 
Stem rust... 
Control. 
IIB: 
Stem rust... 
Control. 
IIIA: 
Stem rust 
Leaf rust.... 
Control. 
IV: 
Stem rust 
Leaf rust. 
Control. 
VB: 
Stem rust 
Leaf rust. 
Control. 
Yield. 
Water requirement. 
Tops. 
Grain. 
Water used. 
Tops. 
Grain. 
Per cent rust. 
Gm . 
19- 484 ±0. 893 
Gm . 
2. 304±o. 230 
Cc . 
6> 524±307 
336± 5-0 
3>°79± 389 
“25 rb 6.9 
20. 751 ± . 812 
2. 638± . 527 
6,822±3o8 
6, 625±2o8 
328± 5.9 
2,6761b 254 
b 8 db 1. 7 
I9-2I9± .763 
3*320± .220 
346 rb 6.8 
2,044± • 131 
Tr. 
16. 8i7±i. 4 
1. 4io± . 238 
6, 226^247 
380±20. 0 
7*64 5± 275 
35 ±13 
4 
18. 884i ■ 067 
1. 797 ± • 2S6 
6,451 ±244 
342± 3.5 
4>300=b 192 
8± .94 
17. 063 ± 1. 82 
I- 9x1 ± . 560 
6,348 ±163 
3 2 7± 8.6 
3i5i8± 53 
18. 123 ± .36 
1. 7I7± .283 
6,865 ±169 
379± i- 7 
5, 630 ±i ,646 
40± 11 
si- 550±i- 26 
i- 862± .345 
6, i 67 ±i 63 
293 ±17- 5 
4, 735± 1,019 
9±i*3 
Tr. 
20. 972 ± .491 
2* 453 i .246 
6, 706± 43 
3 2 4± 5- 1 
2,964 ± 369 
Tr. 
21. 2 3 s± .378 
I. 67o± .337 
7>552±i59 
357±i2-o 
6,146^2, 713 
65 ± 5-4 
2 4- 496± .307 
2-3SS± -503 
7ti45±2i9 
291 ± 7-2 
3>094± 154 
x8i 1. 3 
23. 7x1 ± • 797 
2.868db .323 
6,625^129 
259 ±i 3 .o 
2,9481b 266 
Tr. 
21. i38± . 122 
1. 263 ± .339 
6,785± 71 
327±I5- 0 
9) 749 ±2,120 
3odb 4. 9 
23- 953 ± -423 
1. 744i • 288 
6,633 ±161 
277± 3-9 
4)97i±i) 178 
Tr. 
32 i I. 6 
25-824± .433 
i. I23± . 258 
1 , 022 ±164 
272i 2.9 
8,148db 1, 275 
Tr. 
19- S63 ± 1. SS 
l-93i± .215 
6,3S8±294 
333 ±i6- 0 
4,357± 987 
25± 1.6 
23-43<>± -507 
I *375± -242 
6 , 9 I 9 ±ii 7 
309± 3- 5 
6,252 ±2,169 
Tr. 
Tr. 
16.9241b .31 
0. 893 db .46 
6, io9± 8 
362 ± 7.6 
7>973± 180 
45± 6.8 
i9-677± -332 
1. 256± . 396 
6>443± 20.4 
328± 9. 1 
5;5 i 8± 624 
1 
19- 307± .824 
x-S 98± -534 
6, i 89±29 i 
320± 5.3 
4, X59± 410 
3± .67 
18. 379± .888! 
I- 394± • 266 
5t983± 88 
3 2 7± 6.8 
5>598± 976 
Tr. 
2 db • 06 
21. 635± .671! 
1. 738± • 392 
6,646± 150 
3°7± 2.0 
4’ 2 59± 874 
Tr. 
20. 122 ± .535 
3*356± .315 
6 ,oi 6 ± 2 I 5 
209± . 18 
i,937± 257 
I5± 2.9 
i9-i2i± .520 4. o(>9± .390 
5 , 445 ±242 
285 ± 10. 0 
i,4o6± hi 
b 4± -67 
1 
23. 020± .373! 
j 
5. 605 db .212 
6,8o8±n6 
286± 4. 2 
i)223 A 31 
Tr. 
20. 562i I. 72 j 
2. 236± . 442 
5 )8 i6±iii 
293 ± 5-7 
2,6551b 756 
8± 1. 3 
6± .94 
1 
14. 288±I. 32 ! 
22.155± • 573 1 
0. 986± • 438 
i.885± *402 
4> 588 ±33 7 
6,657±i78 
327±I4 .o 
301 ± 4-5 
5) 293 db 795 
3?6 i9± 210 
- xiiuicctLcs stem-rust miection. 
6 Indicates leaf-rust infection. 
Table III.--Influence of stem rust and leaf rust on yield and water requirement of 
Marquis wheat, based on average results from ten different nutrient cultures , each con¬ 
sisting of four crocks a ’ 
Culture. 
Stem rust: 
Tops. 
Grain. 
Control: 
Tops.. 
Grain. 
Leaf rust: 
Tops.. 
Grain. 
Dry weight, mean. 
Gm. 
i 9 - 327±°-345 
i.838± .139 
2 I.6S2± .526 
2 - 353 ± -272 
2o.i78± .801 
2.oi5± .219 
Water used. 
6,444± 109 
6,679dt 41 
6, i54±io6 
Water requirement. 
Cc. per gm. 
339 ± 6.5 
S. 333 ± 59 i 
306± 5.8 
4 .° 04±459 
3o8± 8.7 
4>o°9±386 
Per cent rust. 
3°±5 
• 5 ± -2 
iodh 1 
ITB dthi S ms" i “ I r r e e omiUc-d inClUdin " eahm IIIB “ aU serks ' “ d «“ “ culture HA and 
73431—24-4 
