16 



BULLETIN 242, U. S. DEPARTMENT OF AGRICULTURE. 



27.8 bushels per acre on fall-plowed land following small grain. 

 Kafir following small grain has, on the average, given slightly better 

 yields of both grain and fodder than it has following kafir. These 

 higher yields have doubtless been due to the repeated failure of the 

 small-grain crop, which has left the ground partly summer tilled. 

 There has been very little difference in the average grain yield by the 

 different methods under study. From no method has this average 

 yield been sufficient to cover the cost of its production. All methods 

 have produced four good crops of forage. The average yield of fod- 

 der after fall plowing is above the average of any other method. 

 The next highest yield has been after fall plowing following kafir. 



"Without exception the value of the forage has exceeded the value 

 of the grain produced under all methods studied, Kafir after kafir 

 on spring-plowed land has shown the lowest margin of profit, viz, 

 64 cents per acre. The greatest net profit per acre has been secured 

 by growing kafir after small grain on fall-plowed land. The profit 

 by this method is $3.78 per acre. The margin of profit from all 

 methods has been small and, on the average, much lower than at 

 Dalhart or Amarillo. 



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

 different tillage methods and crop sequences at Garden City, Kans., 1909 to 

 1914, inclusive. 





Fall plowed. 



Spring plowed 







Yields, values, etc. (average 

 per acre). 



After kafir 

 (lplat). 



After small 

 grain (2 plats). 



after kafir 



(1 plat). 



kafir (1 plat). 





Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Grain. 



Stover. 



Yields for the year: 



1909 



Bush. 

 



5.0 

 

 27.8 

 

 6.7 



Lbs. 



5,260 

 3,880 



680 

 5,970 



440 

 3,340 



Bush. 







9.6 





 25.1 





 C 1 ) 



Lbs. 



5,780 

 6,800 

 1,390 

 5,745 

 1,430 

 (•) 



Bush. 

 



2.2 







22.5 



Lbs. 

 4,310 

 3,550 

 580 

 5.400 



Bush. 

 



2.7 

 



20.6 

 

 3.8 



Lbs. 

 4,400 

 3,820 



1910 



1911 



580 



1912 • 



5,805 



1913 



i.sO 

 3.7 | 2,940 



300 



1914 



2,750 









6.6 



3, 262 



6.9 



4,229 



4.7 | 2,910 



4.5 



2,943 







Crop value, cost, etc.: 



$2.64 



SO. 52 



$2.76 



IBS. 46 



$1.88 1 $5.82 



1 

 $1.80 ! $5.89 













$9. 16 

 7.44 



$11.22 

 7.44 



$7.70 

 7.06 



S7. 69 



Cost 



5.93 







Profit 



1 72 



3-78 



64 



1 76 





















1 Discontinued in 1914. 



A rotation of small grain and kafir is impracticable on account of 

 the failure of small grain. Summer tillage should, therefore, be 

 given a thorough trial, as it may prove to be the most profitable 

 method. Experiments have been started to determine the most prac- 

 tical application of summer tillage for the growing of kafir. 



