18 



BULLETIN 242, U. S. DEPARTMENT OF AGRICULTURE. 



KAFIR AT AMARILLO. 



The results of seven years with kafir at Amarillo, Tex., are avail- 

 able. During this time only two complete grain failures have been 

 recorded. While the net profits shown at Amarillo are not as large 

 on the average as those obtained at Dalhart, Tex., they are consider- 

 ably above those at Garden City, Kans. Kafir after summer tillage 

 is the only method that shows a loss, but, as this method has been 

 carried on for only three years, it is possible that this loss does not 

 represent what might reasonably be expected by this method if it 

 were tested for a longer time. The value of kafir following kafir 

 on fall-plowed land exceeds that of kafir after kafir on spring-plowed 

 land by $1.26 per acre. The largest profit by any method used has 

 been obtained with kafir after small grain. For the seven years 

 under study this method shows an average profit of $8.21 per acre. 



Table XII. — Summary of yields and digest of the cost of production of kafir by 

 different tillage methods and crop sequences at Amarillo, Tex., 1901 to 1914, 

 inclusive. 





Tall plowed. 



Spring plowed 



Listed after 







Yields, values, etc. 



(average per 



acre). 



After kafir 

 (1 plat). 



After small 

 grain (2 plats). 



after kafir 

 (1 plat). 



kafir 

 (2 plats).* 



(1 plat). 





Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Yields for the year: 

 1907 



Bush. 



13.3 



30.8 



1.4 



Lbs. . 

 7,040 

 5,360 

 1,513 



Bush. 



16.7 



38.4 



4.6 



Lbs. 

 7,355 

 7,020 

 3,908 



Bush. 



10.7 



29.2 



1.6 



Lbs. 

 4,630 

 4,820 

 2,026 



Bush. 



11.8 



27.2 



5.3 



Lbs. 



4,730 

 4,940 



2,684 



Bush. 



Lbs. 



1908. 







1909 







1910 2 ... 







1911 



21.8 

 





 12.0 



7,280 



5,660 



170 



3,940 



18.9 

 

 

 6.9 



8,310 



6,020 



755 



4,340 



21.7 

 

 

 8.3 



4,350 



6,870 



280 



3,790 



8.0 











12.5 



1,500 



5,215 



620 



2,760 







1912... 





 

 7.0 



6,160 



1913 



2,240 

 4,880 



1914 







Average 



11.3 



4,423 



12.2 



5,387 



10.2 



3,824 



9.3 | 3,207 



2.3 

 $0.92 



4.427 



Crop value, cost, etc.: 



$4.52 



88. 85 



$4.88 



810. 77 



$4.08 



37. 65 



$3.72 $6.41 



$8.85 













Total value 



Cost 



$13.37 

 7.44 



$15.05 

 7.44 



$11. 73 

 7.06 



$10. 13 

 5.93 



S9. 77 



12.31 







Profit or loss . . 



5.93 



8.21 



4.67 



4.20 



-2.54 



Only one plat used until 1912. 



2 Station site changed in 1910; yields not used. 



GENERAL DISCUSSION. 



With the exception of the rainfall, which is less at Dalhart. Tex., 

 than at Garden City, Kans., and Amarillo, Tex., the climatic condi- 

 tions at the three stations under study are very similar. The soils 

 of the three stations are of different types, but they are fairly repre- 

 sentative of the more important agricultural types of soil to be found 

 in the southern Great Plains area. 



