66 BULLETIN 698, U. S. DEPARTMENT OF AGRICULTURE. 
was the same. The difference in these factors does not seem suffi- 
cient to explain the difference in ripening. It is said that under 
humid conditions the Red kafir is naturally earlier than the Black- 
hull. The season of 1915 approximated a humid condition in the 
Texas Panhandle and the early ripening in that year may have been 
the natural response of this variety to those conditions. 
TaBLe XXIV.—Agronomic data for Red kafir grown at the Amarillo Cereal Field Station 
during the 9-year period from 1908 to 1916, inclusive. 
[In the statement of yields per acre the bushel is rated at 60 pounds.] 
| Row space.| Length of period | | = Seed in— | Yields per acr2. 
aes 3 | § | 
Year and C. I. | Je = is 5 = 
No. =| 81s rob ag ets og Reese) Mee = = 
, 3} eS) S428) § Ss |e Se) a ieee 
|e) e183 (20 tsap Sele Se econ 
| 7) > Se is R = = 7 Ss = = = 3) 
1908: Ins. | Ins. |Days.|Days.| Days. | Per ct (Pert Feet. | Per ct.| Per ct. pas Lbs. | Lbs. eee: 
Baste te | 8016.5 CS SE 1a eee | Ses ey [ee pall feces ER Ee = 42.7 
aE. ete OT O ee Sls, 30 | tat, Aiea Rocky eee Beteam ci 0s 52 ae feeee ee 30.1 
cv Gg Bel Be) | as EEE BI? SP pias eee oe FAT bafesae Ph PEER) Mia =) oe o> 22 Beers 5.56 = 
eee [12.4 ) 7.1| 90] 28) 118 | 42:7 |-._.. 5-5 |...... eae ee le scose|s ae 7.0 
eet e® ties j-th a We man sl (ae el cas Pls ee Te | soe pepe palates Pe daa e228 | 97.7 
74 ae a 1122) 7.0) Sth. s/he 26 eee 5.5 | a ee Bee eee Eee oe 28.7 
Bets | 12:1] 7.2] 91] 33| 124 | 40.5 |-2222 7g ee fees tas Wass Bese. | 32.0 
Average | 11-5 | 6.9 | 89.7 | 31.5 [121.3 | 37.9 |---..- eases g foe Sees Rice ees oe | 33.0 
1909: | | BEES | 
“iN weenie Leola a) S92 ach Sees Ay ay Pens Wee oe) cee Pee oes he 2.0 
co oY eo os Wad 3 tak a cae He Heer ce Brg Rees Sis ite Pee es | 2.0 
Eee ae ria) age Tel eget leptin [S03 | DAT Yoo aoe eae | 2.0 
2. is Sine fe7 Oe Sa eal Be  i ene Meters bebe es S| PF ee i so / 10.0 
GRE ee Se 16.074, 12.5l oy SENT ca eae 22.31 58.0.0: <7 Ano ES ae ee | 10.7 
GOK Eo, TAC Sot fay Wel 1 ae! lta Ne SAS dy Re iy (ese REY Cet peel pa) AS eee) 
pa ee res el Be (a (Pe Pp a Oe Gee ae Sle [i a a Se ee 3 ees | 4.6 
Bin ste he ae CWT Pal hy A Dean Ses ee a yl 27k ol eee nent oe Pb eee | eS cee ee aR 
Average.| 11.6 | 8.7 | 93.4 |__..__|......| 26-1 | 28.0 |... [Lo Size [Sees aoe | 49 
1910: | | | | 
E> OA eS eee | 46.5117.6| 103] 40| 143 16.8} 9.6 | 58.0 |3,216| 531] 5.2 
Soe) 157.0} 19.5| 103] 40 143 12.5] 7.6 | 60.8 |3,326| 416] 4.2 
OO ie. ets | 40.5 | 16.8] 290] 38) 128 7.5 | 4.1 | 53.8 |3,526 | 266 | 2.4 
1 Pe ES: | 45.7 | 16.3) 103] 40] 143 12.4 | 7.3 | 58.7 |3,653 | 454| 4.4 
ihe ee ( 53.0} 16.5| 290] 33] 123 8.7 | 5.0 | 57.7 )3,438 | 300) 2.9 
eee | 27.3] 9.1] 106} 37] 143 | 65.5 | 42.5 | 4.2 ]..2... fees Bees ae RE. 7.5 
66. ose 24.4|13.0| 290] 28| 118] 46.8|38.5| 4.5 |... [ese eaeees a ees 10.7 
ee ee eee SSE EE EEE 
Average.| 42.1 | 15.5 | 97.8 | 36.6 |134.4 8.2| 6.7 | | 5.3 
1911: | | | 
Si oete) ae S. | 16.7| 10.9|° 86| 46] 132 39.1 | 25.7 } i8.7 
GS ie. eS lie | 15.4] 10-0] 86| 46] 132 35.5 | 23.4 15.8 
692. 3A ee 12.5] 8.0] 88] 44| 132 33.9 | 21.2 | 17.5 
BED ee al 11.9 7.6] 88| 44] 132 36.8 | 23.6 | 19.0 
FRE ALIS G7 1".6.8 1 88 [441 132 35.3 | 21.0 | 15.6 
Sift save: 2 ee 11.3} 7.8] 86] 46] 132 42.3 | 27.3 24.3 
5 ER Lae 16.3|10.4] 86] 46| 132 660.3 | 32.5 | 20.0 
Average.| 13.4| 8.8|86.8| 45| 132 40.5 | 24.9 18.7 
1912: We ee | 
Ey a iat |} 16.8| 7.4] ¢88| 51] 139 6.2] 3.6 | | 3.0 
GS24+2 “eae | 16.8] 6.7} 488) S51] 139 6.8} 4.0) | 3.8 
GOs sor Ss 20.0| 8.2] 490) 49] 139 7.0} 4.3 | [Sse 
DIge7F SOUS 15.9| 6.7| 492] 47}, 139 4.4] 2.4 2.2 
es ie | 17.1] 7.1] @92| 47] 139 5.3 | 3.4 | 3.1 
Beene se }16.2| 7.1] 99] 35] 134 33.8 | 14.7 11.2 
Saree kee (16.8 | 7.4] 104] 34] 138 10.9 6.0 | 5.8 
re A Mee Se | 48.0|12.6] 95| 44] 139 5-54) 1-6) 1.1 
Average.| 21.2 | 7.9 | 93.5 | 44.5 | 138 9.9| 5.0| 5 4.3 
a First and only heads. b Machine headed. 
