26 BULLETIN 836, U. S. DEPARTMENT OF AGRICULTURE. 
Acme stands first, with an average of 88 per cent, while the Dwarf 
(C. I. No. 535), is a close second, with an average of 87 per cent. 
This selection leads the next highest selection, Dwarf (C. I. No. 442), 
by 4 per cent, while the other two varieties, one Standard and the 
other Dwarf, grown in that period, tie for fourth place, with 80 per 
cent each. The percentage of good brush produced by the Standard, 
Acme, and Dwarf varieties is shown graphically in figure 7. 
TABLE VIII.— Annual and average acre yields of all lots of broom corn groien in 
varietal experiments at the Woodward (Okla.) Field Station during periods 
of varying length in the five years from 1914 to 1918, inclusive. 
Annualacre yields (pounds). Average yields. 
f ~ 2 '2years,1917 5years, 1914 
ae ae 1918 | and 1918. | “to 1918. 
SSS SSE SSS SE SSE 
j | | } 
|Good. Poor Good Poor. Goa Poor.| Good. Poor. Good. Poor, Good. Poor. ood. Poor. 
| | | iz 
Standard: 
C. 1. No. | | | | | 
556...... 225| 75} 440} 235] 366| 39 | 3501 31} 275] 30} 312] 30] 331]- 82 
C._I. No. | 
ET | pas eee pee (Pee Sl panies CASE! elo 160] 45 | 256 | i cael Ste Heese 
C. I. No. | | 
Baer eee Reza (Sel Hea ees jaune | -owdecas {Se Boyes es See beled ee 27 
Acme: | | 
C. I. No. | 
De eon 306 | 20 | 600] 155] 378] 55] 394 30 | 283 | 28) 338] 33 s | 59 
Dwart: i 
C: I. No: 
ose | 75) | sit] 83] 283| 117] 323| 72| 198] 37} 258] 54] 317| 66 
Pe oO. 
oo ag | 20 | 088 | a 433 | 50| 378] 72] 239] 50] 308/ 61] 392 63 
= No: | 
ay Ee 250/ 100} 630] 205] 361| | 378] 77| 204] 28] 336] 52| 387 98 
C. I. No. peees oe pase, 
Areas peeeee Cate, hes = Bees Bee os 444 = 45-]o 75> AO PO be Ste eee 
C. I. No. | | | | 
7 Meena pepe eter Pe Petes Rese i Fe aes | 17, pd OS eset tai Mieltrs (Ss = 
C. I, No. | | | 
i ae) (Seo WB TS dS i Paes preys nes 36551 == 80-1) 278") af a) 62 | eee 
C. I. No. | | 
i pleas | Rise S el CRs aa Pees Pecos (Seer 411° 50:3 2044 = 5-37 ee 
DATE-OF-SEEDING EXPERIMENTS. 
A date-of-seeding experiment with Acme broom corn was con- 
ducted each year during the 5-year period from 1914 to 1918, in- 
clusive. The plats used in this experiment were one-tenth acre in 
size. Seeding was done at intervals of one to two weeks. In 
1914 the experiment included only three different dates. These 
were increased to four dates in 1915, to six dates in 1916, and to 
seven dates each in 1917 and 1918. 
Table IX shows the agronomic data for Acme broom corn in the 
date-of-seeding experiment. It will be noted in this table that the 
stands obtained in the different dates of seeding in the same year 
and in the different years are comparable in almost all cases except 
those of the last date, July 3, 1917, and the first three dates in 1918. 
The thin stand in the former case was due to the dry condition of 
the soil and to high temperature at and following the date of seed- 
