CEREAL EXPERIMENTS AT THE AKRON FIELD STATION, © 17 
duced. These are Crimean (C. I. No. 1559) and Malakof (C. I. No. 
2908). In the six years they have been grown these two varieties 
have given higher average yields than any of the others. Ghirka 
Winter (C. I. No. 1438) and Crimean (C. I. No. 1436) have tied for 
third place in the 6-year period. 
In Table X agronomic data are given for five varieties which have 
been grown during the 8-year period. These data include average 
dates of heading and ripening, height, weight per bushel, and yield of 
erain. There is very slight difference shown in the average dates of 
heading and ripening, but there is a difference in the average length of 
straw, Ghirka Winter (C. 1. No. 1438) having an average height of 39 
inches and Crimean (C. 1. No. 1436) an average height of 32 inches. 
The difference in weight per bushel is slight. 
TABLE X.—Average dates of heading and ripening, height, weight per bushel, and yield per 
acre of five leading varieties of winter wheat grown at the Akron Field Station, Akron, 
Colo., during the 8-year period, 1908 to 1915, inclusive. 
Average date— 
Variety. LON os | Ramanan nian Umar Cre nU-|) ner per 
Headed. Ripe. bushel.| acre. 
Inches. |Pounds.|Bushels. 
Chiang e inte JERE Bo See one ae ee ear eee oe 1436 | June 18 | July 13 32 58. 4 22.0 
SEG Tes OL eye et re ee eee i eerie ne ata Silas Saree 1583 | June 17 | July 14 35 58.3 21.6 
Gravina), \WAbSIG aes aeaseeo. sons OP Aar eae eee ae 1488 | June 18 | July 16 39 58.8 25 
INCHEON Selb o SE ROSELE Se Gee Cue See See era as 8 ete 1571 | June 17 | July 15 35 58. 2 20.6 
IXTRIIROIS SSS Sa ee ee ee a a ae ae ee me 1442 |...do.....| July 14 35 58.3 20. 4 
NURSERY EXPERIMENTS. 
The cereal nursery has made possible the testing of a large number — 
of varieties and strains. Sixty-three varieties have been tested in 
nursery rows, most of which have not shown sufficient promise to 
warrant advancing them to field tests. A much larger number of 
pure-line selections have been tested in the nursery and most of them 
discarded. One of the strains has been increased and is worthy of 
mention. It is a selection of Kharkof (C. I. No. 1442) and has been 
designated Kharkof 6P4 (C. I. No. 4207). 
Nursery sowings have suffered from soil blowing to such an extent 
that the results are not entirely comparable. In 1914 several rows 
were almost entirely killed. Soil blowing follows as a consequence 
of the special soil preparation necessary in order to sow by hand or 
with garden tools. In order to prevent soil blowing it is necessary 
to have an uneven and, if possible, a lumpy surface. 
RATE-OF-SEEDING EXPERIMENTS. 
Rate-of-seeding tests of Kharkof winter wheat have been conducted 
at Akron for five years. During that time four rates of seeding have 
been used each year. The seed has been sown on summer-fallowed 
50400°—Bull. 402—16——3 
