26 BULLETIN 219, 17. S. DEPARTMENT OF AGRICULTURE. 



AMARILLO FIELD STATION. 



Table XVII presents the results in the growth of corn during 

 seven years by different methods at Amarillo, Tex. No data are 

 presented for 1910, as the station was moved and only one method 

 was on trial that year. Fodder was produced each year by all 

 methods, but in only one year was there a creditable production of 

 grain. 



Table XVII. — Yields and cost of production of corn by different methods at the Amarillo 

 Field Station, 1907 to 1914, inclusive, except 1910. 





Fall plowed. 



Spring plowed. 















Yields, values, etc. (average 

 per acre). 



After corn 

 (1 plat). 



After 



small 



grain 



(11 plats). 



After corn 

 (1 plat). 



After 



small 



grain 



(3 plats). 



Subsoiled, 

 after corn 

 (1 plat). 



Listed, 

 after corn 

 (2 plats). 



Summer 



tilled 

 (1 plat). 



■i 



.a 



03 



Sh 



o 



*4 



o 

 m 



.3' 



03 



5 

 > 

 o 

 +^> 

 m 



.3 



03 



o 



IS 



> 

 o 



m 



.a 



03 



u 



o 



> 

 o 



m 



.3 



03 



o 



ffl 

 | 



.3 



03 

 u 



o 



> 

 o 



m 



.3 



03 



o 



> 

 o 



Yields: 



1907 



Bu. 



1.4 



Lbs. 



3.270 



Bu. 



2.3 

 19.8 







8.9 



1.7 







5.1 



Lbs. 



2,997 

 3,107 

 1,596 

 2,145 

 1,848 

 773 

 3,641 



Bu. 



3.1 



20.3 



.6 



8.1 



2.6 







1.1 



Lbs. 



3, 280 

 3,300 



560 

 1,945 

 2,160 



700 

 1,500 



Bu. 

 2.1 



14.7 

 



9.5 

 1.1 







2.8 



Lbs. 

 3,010 

 2,863 

 1,383 

 1,960 

 1,829 

 383 

 2,733 



Bu. Lbs. 



1.13,490 



Bu. 

 2.2 



Lbs. 



?, 935 



Bu. Lbs. 

 5.7 3,710 



1908 



22. 9 14,580 

 2.7 1,310 

 9.2 2.075 



25.7:3,810 

 1.7 990 

 7.1! 1,720 

 1.0,2,080 

 430 

 5.14,850 



24.7|2,390 

 5.41,043 

 7. 8; 1,998 

 1.7 2,015 

 1 225 

 7.0 2,870 



27. 6 3, 700 



1909 



6.41,890 



1911 



9.3 2,050 



1912 



.7 



1, 680 



3.3 2,840 

 1 1,750 



1913 





 3.6 



380 

 4,140 



1914 



8.0 5,320 









5.8 



2,491 



5.4 



2,301 



5.1 



1,921 



4.3 



2,023 

 $4.05 



6.0 2,481 

 $2. 40'$4. 96 



7.01,925] 8.6 3,037 





Value 



$2.32 



$4.98 



S2. 16 



$4.60 



$2. 04 



$3.84 



$1.72 



$2.80'$3.85$3.44'S6.07 



Total value 



$7.30 

 7.49 



$6.76 

 7.49 



$5.88 

 7-H 



$5.77 

 7.11 



$7.36 

 8.18 



$6.65 $9.51 



Cost 



5.98 12.36 









— .19 



— 72 



— 1 93 



— 1 34 



— .82 



67 



-2. 85 

































The yields by different methods show comparatively small differ- 

 ences. Summer tillage shows a small increase in yield of both grain 

 and stover over all other methods of preparations. Fall plowing was 

 a somewhat better preparation than either spring plowing or listing. 

 Subsoiling failed to increase yields over fall plowing similar land 

 without subsoiling. Listing shows a small profit of 67 cents per acre. 

 All other methods show losses ranging from 19 cents per acre by fall 

 plowing after corn to $2.85 on summer-tilled land. 



GENERAL DISCUSSION OF RESULTS. 



In the foregoing pages the results of growing corn by different 

 methods of land preparation have been discussed in more or less 

 detail for each individual station. It yet remains to take a broader 

 view of the problem, and the relative merits of different methods will 

 be considered for the Great Plains area as a whole. Some compari- 

 sons of station with station as representatives of different sections of 

 country whose results are indicative of the comparative value of corn 

 to such sections will also be made. ? 



