COMMON VETCH AND ITS VARIETIES 
15 
oats when the two are used in combination (fig. 8). In California a 
lower rate of seeding is advised, because there is less winter damage 
there than in Oregon and Washington. For California 60 pounds of 
common vetch seed when sown alone and 50 pounds of vetch and 
Fig. 5. — Plats of Oregon vetch in rate-of-seeding experiment 
30 pounds of oats or other small grain are recommended. The best 
rate of seeding for the South Atlantic and Gulf Coast States is yet to be 
determined, but on account of the usual winter injury as heavy a 
rate as is used in Oregon likely will be required. 
Table 7. — Yields per acre of hay, seed, and straw from Oregon vetch when sown 
alone and in combination with oats at different rates of seeding 
[Computed from duplicate twentieth-acre plats. The asterisk (*) marks a year of crop failure] 
Product and rate of seeding 
1915-16 
1916-17 
1917-18 
1918-19 
1919-20 
Total 
Aver- 
age 
Hay (dry-matter basis) : 
40 pounds 
60 pounds 
80 pounds 
100 pounds 
40 pounds oats with— 
40 pounds vetch.. 
60 pounds vetch.. 
80 pounds vetch.. 
100 pounds vetch. 
Seed: 
40 pounds... 
60 pounds 
80 pounds. 
100 pounds 
Straw: 
40 pounds 
60 pounds 
80 pounds 
100 pounds 
Pounds 
5,180 
5,480 
6,100 
5,880 
6,240 
7,580 
6,840 
1,220 
1,333 
1,420 
1,267 
Pounds 
6,120 
6, 500 
6,940 
6,760 
7,220 
7,960 
7,440 
7,500 
1,240 
1,460 
1,814 
1,865 
SEED AND STRAW 
40 pounds oats with— 
fVetch. 
40 pounds vetch./ Oats. _ 
[Straw. 
fVetch. 
60 pounds vetcWOats_. 
(Straw. 
[Vetch. 
80 pounds vctch<Oats._ 
(Straw. 
fVetch. 
100 pounds vetcWOats.. 
[Straw. 
1,140 
1,120 
1,700 
1,010 
1,520 
1,040 
1,940 
920 
1,680 
1,000 
1,790 
795 
1,200 
1.000 
1,420 
555 
Pounds 
4,460 
4,860 
5,560 
5,300 
4,740 
5,040 
5,180 
5,980 
1,550 
1,850 
2,005 
2,050 
4,740 
5,740 
4,600 
4,440 
1,520 
1,148 
6,160 
1,750 
1,130 
5,220 
1,940 
940 
3,620 
1,870 
810 
5,420 
Pounds 
2,100 
2,420 
2,480 
2,560 
3,200 
3,740 
3,580 
3,320 
(*) 
(*) 
(*) 
(*) 
Pounds 
5,880 
7,540 
7,800 
7,640 
7,260 
8,700 
8,040 
7,760 
1,619 
2,075 
2,120 
2,340 
7,520 
7,040 
7,560 
1,040 
1,880 
8,860 
1,220 
1,580 
8,700 
1,420 
1,520 
7,660 
1,380 
1,360 
7,860 
Pounds 
5,440 
6,120 
6,220 
5,660 
5,800 
7,000 
6,240 
6,280 
1,160 
1,259 
1,360 
1,090 
5,440 
5,320 
5,680 
6,080 
840 
1,660 
5,200 
1,000 
1,380 
5,160 
1,180 
1,301 
5,620 
1,080 
1, 060 
5,520 
Pounds 
29, 180 
32, 920 
35, 100 
33, 800 
34, 300 
38, 680 
38, 060 
37, 680 
6,789 
7,977 
8,719 
8,612 
16, 660 
18, 580 
17, 320 
18, 080 
6,240 
6,818 
20, 220 
7,430 
6,050 
19, 080 
8,010 
5,556 
16, 900 
6,950 
4,785 
18, 800 
Pounds 
4,863 
5,486 
5,850 
5,633 
5,716 
6,446 
6,343 
6,280 
1,131 
1,329 
1,453 
1,435 
5,553 
6, 193 
5,773 
6,026 
1,040 
1,136 
6,740 
1,238 
1,008 
6,360 
1,335 
926 
5,633 
1,158 
797 
6,266 
