BULLETIN 1174, U 
DEPARTMENT OF AGRICULTURE. 
Table 3. — Yield of Hungarian vetch and gray winter oats sown at Corvallis, Oreg. 
November 1, 1920, at different rates in fortieth-acre plats replicated four times. 
Rate of seeding per acre. 
Stand. 
Yields per acre. 
Per cent. 
Vetch, 20 pounds; oats, 40 pounds I 100 
Vetch, 40 pounds; oats, 40 pounds I 100 
Vetch, 60 pounds; oats, 40 pounds I 100 
Vetch, 80 pounds; oats, 40 pounds 100 
Vetch, 100 p -Hinds; oats, 40 pounds 100 
Tons. 
Pounds. 
Pounds. 
Tons. 
2.15 
320 
1,080 
3.36 
2.58 
600 
1,000 
3.06 
2.88 
680 
880 j 
2.94 
3.04 
840 
880 
3.04 
3.60 
960 
800 ; 
3.28 
VALUE FOR GREEN MANURE. 
Hungarian vetch makes a good green-manure crop. It is especially 
valuable for this purpose on heavy wet lands on which other legumes 
will not make a very large growth. On account of its semierect 
habit it can be turned down more readily than common vetch or other 
vetches of a viny nature. Because of its greater hardiness it also 
can be used in localities having winters too severe for common vetch. 
In regions having mild winter conditions and a well-drained soil, com- 
mon vetch and purple vetch can be used to better advantage than 
Hungarian vetch. Under such conditions they will make a larger 
winter growth, which is one of the essential features of winter green- 
manure crops in mild climates. 
Table 4. — Yield of Hungarian retch sown at Corvallis, Oreg., March 9, 1921, at different 
rates in du plicate fortieth-acre plats. 
Yields per acre. 
Rale of seeding per aero. 
Seed. 
Vetch. 
Oats. 
Pounds. 
770 
940 
640 
760 
Pounds. 
Tons. 
1.82 
1.83 
2,470 
2,300 
2.35 
2.25 
Table 5. — Yield of seed and straw of Hungarian vetch fall sown at Corvallis, Oreg., in 
duplicate twentieth-acre plats, 1916 to 1921, inclusive. 
Year harvested. 
Planting 
date. 
Stand Harvest- 
Stand - ing date. 
Yields i 
Seed. 
>er acre. 
Straw. 
1916 
Nov. 4 
Nov. 14 
Oct. 29 
...do 
Oct. 7 
Nov. 1 
Per cent. 
100 Aug. 8 
100 July 30 
100 July 15 
100 July 20 
100 July 22 
100 July 20 
1 
Pounds. 
1, 730 
1,450 
2,118 
2,540 
2,700 
2,560 
Tons. 
1917 
1918 
1919 
1920 
1921 
2.12 
2.74 
2.98 
3.28 
2.83 
