34 BULLETIN 1276, U. S. DEPARTMENT OF AGRICULTURE 
and humid areas. Jn very unfavorable seasons, hot winds ripen, or 
rather “‘deaden,”’ all varieties of wheat at almost the same time, re- 
gardless of their relative normal periods of development. Thus, 
there is a wide variation in the time of maturity of the same variety 
of wheat in different seasons, due to environmental conditions at 
both the seeding and ripening periods. 
In many seasons the wheat did not emerge until late in the fall, 
and the period from emergence to maturity thus was shortened. Dur- 
ing five station years the winter wheat did not emerge until spring, 
but still produced a crop. The data from these five years are not 
included in the tables here presented. The average number of days 
from emergence to maturity of all varieties for which data for three 
or more years are available are presented in comparison with Kharkof 
in Table 19. 
Satisfactory data on the number of days from emergence to ma- 
turity were obtained for the Kharkof variety during 89 station 
years. The average length of the period between emergence and 
maturity of Kharkof was 286.2 days. This period varied from 187 
days at Lind, Wash., in 1918, to 354 days at Moccasin, Mont., in 
1913. When Kharkof did not emerge until spring the period from 
emergence to maturity has varied from 106 to 149 days. 
TABLE 19.—Average time from emergence to maturity of 86 varieties and strains 
of winter wheat grown at 15 experiment stations in the Great Plains and Great 
Basin areas during 3 or more of the 15 years from 1908 to 1922, inclusive, com- 
pared with that of the Kharkof variety for the same station years 
Average time from emergence to matur- 
ity (days) 
: Station 
Class and variety C.1.No. years ry Difference in days 
Variety tana : 
named years 
Earlier Later 
Hard red winter: 
IKERATROT oe ee he a Ay le ae ad 89 286.2 Wine ee ee ee ee 
MibertacKeds 27_ re PA 943 et 2979 36 287. 0 2867 7) | 2131s 0.3 
Altara (Kansas No.'2048)._._..-_-___ 5797 10 277.7 PAE Roe eee .4 
PRE OTIS oh co ne a ee ae Oe 3 ane aE 1438 46 277.7 DSK O=}2 FA 4 
Argcentinewerct Pee se) Poe ee Ue 1569 11 256. 1 Pw oon a .4 
JT TARE p ree a eae eae se peony eater oe) 1355 12 266. 5 2602 Ui) aoe ee 1 bag 54 
Armavir (selection)-_ ~-____--=_---L___- 1355-2-2 9 306. 7 307. 2 Ob i22= ete. 
183s Y ool ds Wes gin use teen Woe ORR cen Aeron, ieee’ 1562 7 278. 9 218.0 jes eee 9 
BST ab Me ae BSA oe Sere ee 1560 4 276. 0 277.3 Rt. 2/1 
Beloglina a2 srz..o be rites wee SS 1543 35 301.3 301. 4 1 i ee Sas Se 
OB iS ee RS ee ee 1544 9 288. 8 75 aks BN le, Mba be Te 5 
Pots Bid 1 Berar By tee 1667 17a LAB 270. 7 2Z7E Bara 2 
OE eT i ee le 2239 15 DIT DATA fe | OS 4 
1B Ere sc abd ae ait Eee a eae es 6251 12 267.6 268. 8 V2. eee 
1eyoU Eat as Ree eee eR F< A atic t bp 2048 6 216.5 276. 0 Bila ates 
C@rimeane.. —_.. .-2 . eee ee 1432 17 303.8 R(t? bel ere cee iiRy 
DD Or ee es Sa es a ne 1433 7 302. 9 S025 4h Stan 5 
UD) Cg Eo 5 Se ae gS ge ee ee 1435 14 305. 3 303; 42202 ee 1.9 
Dotto? BNA 1 YSPC ie 1436 29 281. 1 281.3 2 Te £ aed Re 
LD tote 29 Ds CO SS stokes ee Te ee 1437 40 287.8 pny ee | pene ene" 4 
O32. BtesT eS. SR A Ns 1559 32 299. 5 299. 8 3S |e 
Weflanceys 22 ov} evdeudk . ease ee steven 6214 3 258. 0 258. 3 Sire eee 
WV CrSOlG ak eer eee 3011 3 325. 3 326. 7 Aa 2 eee 
Hungamanz lit) tis (27 Ost ivrt? eo 2034 3 275.47 277.3 MG [eto 
Kenta ee ee a es Ee 5146 38 273.7 274.8 TRE gi MO er, 
ICOPINIOI oe wt SANE RENE SERA eRe 6700 12 288. 6 ») 1 Ng PS Ae > Sa 5 
Kharkonss. «rent Ack = See ee 1442 59 281623) oni eectoclkct geces <p ae 
Kharkof (Selection No. 6P2)-_ _---__- 1442 9 258. 9 DERN Mee oe 1 
DY Feiliiph FUE shee 1583 42 300. 2 30012315. Joe east eae 
1D Oe eta Sete ae 2193 3 319. 3 319. 7 SD eo 
TO ee SE SDR RAY ee OR een 4207 20 286. 0 BEG O 1h J22biE AS ee AA. 
Kharkot:(Hsys INO. 2) 22ers 6686 7 264. 3 264. 4 Ls. Se ee 
ia aol oe er oe re Ee ee oe 2208 28 282. 9 283. 0 1 ek See 
