GRAIN SORGHUMS IN THE TEXAS PANHANDLE. 



33 



which includes two good seasons and one poor one, there is practically 

 no difference in the average yields from the first, fourth, and fifth 

 rates. In the 4-year period, which includes two rates only, the 

 average yield is in favor of the 15 to 19 inch spacing. This same rate 

 leads in the first 5-year period, but is exceeded by the 11 to 13 inch 

 spacing in the second 5-year period. In the 6-year average, which 

 includes only two rates, the 15 to 19 inch spacing again has first 

 place. These results indicate that under such conditions a stand 

 with about 15 inches of row space to the plant is probably the safest 

 rate. 



Table XVII. — Data recorded in the spacing experiments with Dawn kafir grown in rows 

 spaced 7 feet apart at the Amarillo Cereal Field Statio7i during the 6-year period from 

 1914 to 1919, inclusive. 



[In the statement of yields per acre the bushel is rated at 60 pounds.] 



Year. 



Row space. 



Plants. 



Stalks. 



Inches . 



Inches. 



5.8 



4.6 



6.6 



4.6 



6.7 



4.9 



7.7 



5.2 



8.5 



5.8 



I 8.8 



4.9 



f 3.0 



2.6 



4.4 



3.0 



5.9 



3.4 



7.5 



4.4 



9.5 



4.9 



( 10.4 



5.1 



f 2.0 



1.9 



3.9 



2.6 



6.0 



4.0 



8.6 



5.1 



13.0 



6.6 



I 20. 5 



9.2 



f 3.3 



2.8 



1.7 



3.1 



7.8 



3.8 



12.7 



4.8 



15.8 



5.4 



I 32.9 



9.3 



f 1.5 



1.5 



3.0 



2.9 



4.5 



4.2 



1 6.0 



5.5 



7.6 



6.4 



I 15.6 



11.6 



f 4.3 



3.0 



5.9 



4.4 



9.5 



6.3 



1 12.3 



7.8 



21.0 



9.9 



I 47.1 



18.7 



Suckers 



Headed. 



Yields per acre. 



Total 

 crop. 



Grain. 



1914. 



1916. 



1917. 



1918. 



1919. 



Per cent . 

 21.0 

 31.1 

 26.5 

 32.1 

 31.3 

 44.5 



11.5 

 32.6 

 43.0 

 40.5 

 48.2 

 51.2 



9.2 

 31.2 

 33.4 

 40.3 

 50.0 

 55.3 



14.7 

 35.0 

 51.2 

 62.3 

 65.7 

 65.7 



0.0 

 3.3 

 7.5 

 9.0 

 15.5 

 26.1 



29.5 

 24.7 

 33.8 

 36.5 

 52.6 

 60.2 



Per cent . 

 96.8 

 88.4 

 86.5 

 92.7 

 92.7 



96.6 

 92.7 

 93.3 

 90.5 

 93.9 

 97.5 



19.7 

 54.1 



79.5 

 60.8 

 72.6 



86.4 

 82.1 

 85.5 

 89.8 

 90.8 

 94.2 



15.4 

 18.0 

 36.6 

 28.0 

 50.4 

 66.5 



100 

 100 

 100 

 100 

 100 

 100 



Pounds. 

 4,300 

 4,120 

 3,480 

 3,600 

 3, 320 

 4,140 



8, 500 

 8,170 

 8,290 

 7,370 

 6,770 

 6,450 



1,660 

 3,360 

 3,120 

 1,920 

 1,940 

 2,440 



4,640 

 5,020 

 5,700 

 4,840 

 4,420 

 3,480 



1,440 



1,060 



940 



640 



900 



1,240 



6,400 

 5,225 

 4,600 

 4,020 

 3, 340 

 2,000 



Pounds. 

 1,500 

 1,410 

 1,140 

 1,170 

 1,090 

 1,490 



2,860 

 2,880 

 2, 980 

 2,830 

 2,630 

 2,450 



100 

 510 

 640 

 320 

 370 

 650 



1,060 

 1,300 

 2,030 

 1,530 

 1,400 

 1,220 



120 

 115 

 180 



70 

 180 



70 



2,225 

 1,888 

 1,640 

 1,420 

 1,200 

 713 



Bushels. 

 25.0 

 23.5 

 10.0 

 19.5 

 18.2 

 24.8 



47.7 

 48.0 

 49.7 

 47.2 

 43.8 

 40.8 



1.7 

 8.5 



10.7 

 5.3 

 6.2 



10.8 



17.7 

 21.7 

 33.8 

 25.5 

 23.3 

 20.3 



2.0 

 1.9 

 3.0 

 1.2 

 3.0 

 1.2 



37.1 

 31.5 

 27.3 

 23.7 

 20.0 

 11.9 



SECOND SECTION, ROWS 7 FEET APART. 



Table XVII shows the data recorded with Dawn kafir in rows 

 spaced 7 feet apart (fig. 11) in the spacing experiments. In this 



