EFFECT OF DATE OF SEEDING ON CORN. 5 
TABLE 2.—E ffects of seeding on different dates upon the germination, growth, and develop- 
ment of corn, in experiments conducted at Arlington Experimental Farm, near Wash- 
ington, D. C., during the 6-year period from 1915 to 1920, inclusive. 
[The symb o] F indicates that the crop was killed by frost before reaching maturity. In 1918 the first 
(April) seeding, delayed by weather conditions, was actually made on May 7.] 
Number of days from— 
gia? ot cas 
E Seeding toemer-| Emergenceto | Emergence to ESP 
Name of variety. gence. first silks. ripening. 
sella) stad Fie SA a Satay RE Sa (SS aoe ae a pl 
a|oa|& | Siete ce list | ey fre Wl Site a a SS 
Sse }e ass lst 4 Ss Sf oe eee es 
j i] fs hie: aise a = 3 Nia ere ata | 
| fey | | 
Season of 1915: ae | 
Northwestern | 
Deribe ses es P22 | e1 08 8" [7507 C4le |" 33" 1°33 99 | 82 82 96 DD 5.5 4.5 5.5 
Brown County | 
Vellow.s 25 3% Set 2e-10-{ $82 05074437135. |; 33° | 99°} 82°] 83 |* 96 1 623"|- Gad | 5-3 | 57 
U. S. Selection 133-; 12 | 12} 10} 8} 50} 45] 37} 41 | 107| 86] 8&5]! 98 feOl es TRETN OSh 
Minnesota 13...... 12!'12)10} 8 | 50) 45 | 36 | 37 | 107 | 86) 85] 98 GO tes TeOwertao 
M = ens White 
Sees Ske IZ 12'|=10") *8 | 53) 46 |°37 142") 107 | 86 | 85) 98] 5.7-] 6.3 6.5] 6.0 
R 2 s Stl ler White | 
CHG Ee Ss P2612 LO 8 | 50! 41 | 33! 35] 105! 82 79: 96 5.0 TB? See, 6.0 
Australia White 
eae Se re A210 Hoss | Ok | 47937-1409)" 112"). 90} 288i] 2-2-) > 65> p620' | 5: 71 6.0 
Gehu Yalow Flint.) 13 | 12 | 104 8 | 41 | 39] 30) 31} 104} 80| 78| 98] 3.7) 4.0] 4.0] 3.5 
Disco 90-Day...... R22 SCO |S | Hd. ("48519399 |°40 190") 86 |. 85/22 <2) > 6205: 6.0 | 5.57 6:0 
Disco 85-Day au ee TSE AsO GS rOO Nl 40 eot oes lOG! + 8a fe ssoqe 9S lo Osos OO) | a0 ie O.0 
Blue equa Flour.| 13 | 12 | 10 | 8 | 41 | 39 | 31! 31 OST SOU 6h Ole 420 it aaa aoe 
Idaho Flint ....... Gri ael OME S| oOre4onieoo 40 1927/86.) (Soule ee | 4a gee aoe | Os Ohi ond. 
Cornforth Dent....| 14 | 12 | 10} 8] 50| 43! 33] 31/105] 82); 78| F Adee) 4) ete ee 
Early Huron...... 15 | 12}10;} 8} 58} 51 | 40} 41 | 112 90 | 90} F 6.5 6.2 6.2 1577 
Rocky Mountain 
Dantes st fee 16}12;10| 8 | 56| 48 | 39 | 41| 112] 90|] 88) F Tea N ak bso aed ee CO 7.0 
Stickney Flint....| 16 | 12 | 10} 8 | 56| 51 | 40/ 41 | 112 93 88 | F EE dedi 6.5 6.0 
Fairfield Yellow 
elu a5. 2 es 165/712 || 8 | 57 |-51 | 39} 41] 114} 90); 88] F 682522622 TBE nd BTID 
U.S. Selection 193.} 13 | 12 | 1 8 | 56 | 52 | 41 | 41 | 117 93 92] F 7.0 6.2 oven te O 
Davis Yellow Dent} 14 | 12} 10)| 8 | 58 | 54| 44] 43) 118 93 92) F TS 8.7 9.0 rev 
Wilson WhiteCap.| 12 | 12| 10} 8 | 54} 49} 39 | 41 | 112] 90; 88] F hen SO ae onlo tate 
Long Island Yel- 
low Dent =~... - 04210 8) 58452 1-40 W435 17 | 93) 88 | EF GSEs SOR enone Od, 
Woods Northern 
White Dent.....| 13 | 12 | 10| 8 | 60] 57 | 46} 45/119} 98; 93| F 6:5.) - 8.2 1 > “Gan =7.0 
100-Day Bristol...| 13 | 12 | 10! 8 | 61] 58 | 46 | 47 | 117 | 101 93 | F 8.2 oa al bance ol dasl be aid Ft 
U.S. Selection 119.| 14 | 12 | 10) 8 | 70} 66} 53) 51 | 121 | 106 | 102) F 920) |) 9250 LOS2 ae 8s0 
Average (24 va- ; 
rietieS). =... 13 | 12 }16} 8 | 54) 48] 39 | 40} 110.) 89 87 |a96| 6.2 6.4 6.5'| 6.3 
Season of 1916: 
Northwestern 
Dent. 2 8 FY: 15 Oar | 54 148418 35 89 84 Ee 79 5.0 Ze eee 4.0 
Brown County 
Yellow 22... 2: 15} 9 Ey atioor 4951". 2|"a2 |" Soule 95 Fel haded te, 520: [> 4800 eo 4.0 
US. Selection tea IGH 9 Ot ef DS |e: |= 38 | 103 | 97 E 83 GE5 lt One e 23 4.7 
Minnesota 13...... AGebe Mees) <7| GO A292. = A354" 103s! +99) |: ==. 8 83 4'~ 6s5~|: -£.0)-2202- 4.7 
PENS: White 
pe ee i 16+}:49" jee. 7% | GO" 53°12 = 5°43 7 103 OSEAN SS he 5:5: frac Omens = s|) Ace 
Rus ae er White 
CHGs 6. 1 AS Oe eee ee | 555] 487 ]0---) 35: 89} > 99 Le <. Sore Sooo eee 4.0 
Disco 90-Day...... LGAMeLO Rss ee | 557] 5208 -= 21°38 "71°106"| 103 |. S. 2 SS > 6374 Apt Pe eee 4.3 
Disee Bothy ase) 2) 46-1107 222) 921 58 | 51)... 88 1105] 101 1. g...| 83 | 4.0 | B71: 5.3 
EGON beth ke? « 16} 91}... el oOn POs ea. se4t Te 10 05 eo. 8S Pe Sail} RANG ae a 4.5 
Cornforth Dent....| 15 | 91}... BoD >|) 48512 3 89 | 105 : 88 |? 5:0: | 40042 = 4.7 
Early Huron...... AG: ft 9 tote 4) 662|° G1 "12 2° 40 | 107 | 108 d O39 527th CS o reo aus 
Rocky Mountain 
Den Gs 222282. Gel F94 | - 52 7 | 69 | 63 |. 45° (lO ald 2 58 F i 6. ON oes 6.3 
Fairfield Yellow 
Paine eee oes for soes- |e | Gort oS | cI at a 8a pelt Crees pp! burial. 2 Sun bes oes 6.7 
U.S. Selection 193.| 16) .9|....| 7 | 69 | 63 |....| 48 | 114] 114].....| F | 5.7|] 4.5 ]...... 6.3 
Davis Yellow Dent} 16] 9 |... 7 | 71 | 64 |. ALS LISS EPS |e S.. 2 F 6: 0°} 4.5) se S035 6.5 
Wilson WhiteCap| 16] 9/... 7 | 69 | 63 |.. 40 | 107 | 112 a5 F Seta Poe One ak 6.7 
Long Island Yel- 
low Dent........ 1G WP Oslo oh d |: 69 [2644-25 P49 119}. 415 Joo. : F Cal Mee: ad foe ae 5.3 
Woods Northern | 
White Dent.....| 16 | 9 |....| 7 | 75 | 66}. | OU) etoerlalds Pesce F G20) “425ale-52_- | 6.0 
100-Day Bristol...'16!) 9.0...) 7/75! 63 '-272) 50. 133 | 133 127227 Tes eG | ce eens 6.5 
a Average of 9 varieties that matured. The same 9 varieties from the April, May, and June seedings 
averaged 104, 83, and 81 days, respectively. - 
68201°—21—Bull. 1014-2 
