12 
BULLETIN 39, TJ. S. DEPARTMENT OF AGRICULTURE. 
The average yield of the bluestem wheats at Brookings is 1.8 
bushels to the acre higher than the yield of this group at Highmore, 
as shown in Table IV. The average yield of the beardless fifes is 
2.7 bushels, that of bearded fife 3.6 bushels, and that of the durums 
1.1 bushels higher at Brookings than at Highmore. Plant diseases, 
particularly rust, have lowered the yields at Brookings, while 
drought has been the cause of low average yields at Highmore. 
These results indicate that there is not as great a difference in the 
producing power of the two sections of the State as has been gen- 
erally supposed. The quality of the wheat at Highmore has invari- 
ably been excellent, while that at Brookings has been affected at 
times by rust or wet weather in harvest. 
CULTURAL METHODS. 
In Table V the results of an experiment to determine the possible 
gain by the use of better seed and by alternating wheat with a 
cultivated crop are reported. The work was done at Highmore in 
1910. The best seed which was possible to separate with an ordinary 
fanning mill was sown on land previously used for cultivated alfalfa 
in rows. For comparison, ordinarily well-cleaned seed similar to 
that used in all other field experiments was sown on fall-plowed land 
previously in wheat. The experiment was conducted with a repre- 
sentative variety of each group. 
Table V. — Results obtained at Highmore, S. Dak., in 1910, from solving well- 
graded seed tcheat on well-prepared land in comparison with ordinary seed 
sown on land prepared in the ordinary manner. 
Good methods. 
Ordinary methods. 
Differences. 
Group. 
Days 
to ma- 
ture. 
Weight 
per 
bushel. 
Yield. 
Days 
to ma- 
ture. 
Weight 
per 
bushel. 
Yield. 
Days 
to ma- 
ture. 
Weight 
per 
bushel. 
Yield. 
Grain. 
Straw. 
Grain. Straw. 
1 
Grain. 
Straw. 
Bluestem . . . 
Bearded fife . 
Fife 
95 
93 
94 
97 
Lbs. 
58.0 
59.5 
57.0 
60.5 
Bush. 
11.7 
11.6 
15.0 
17.7 
Cwt. 
18.7 
22.5 
17.2 
26.6 
102 
96 
100 
95 
Lbs. 
54.0 
60.0 
54.5 
58.0 
Bush. 1 Cwt. 
8.9 7.6 
6.5 5.7 
11.3 1 7.8 
5.6 ' 11.6 
-7 
-3 
-6 
2 
Lbs. 
4.0 
— .5 
2.5 
2.5 
Bush. 
2.8 
5.1 
3.7 
12.1 
Cwt. 
11.1 
16.3 
9.4 
Durum 
15.0 
Average. . . 
95 
58.8 
14.0 
21.3 
9S 
56.6 8.1 S.2 
-3 
2.2 5.9 
13. i 
It will be seen from Table V that the yield of grain and of straw 
was increased in each case by the use of the better methods, while 
the weight per bushel was higher, with one exception. These re- 
sults were so conclusive that the experiment w r as not repeated. It 
is now becoming common practice to grow as much as possible of 
the w r heat crop on land previously used for an intertilled crop. 
