FAEM PRACTICE IN" THE CULTIVATION OF CORN. 



31 



Practically no cover crops are grown in this region. Both the 

 white and yellow dent varieties of corn are grown. The principal 

 troublesome weeds for this section are foxtail, smartweed, cocklebur, 

 morning-glory, and butt on weed. 



SURVEYS IN TAMA COUNTY, IOWA. 



Tama County is located in east-central Iowa and is a typical corn- 

 growing region. The soil is principally of the silt-loam type and is 

 very productive. The country generalty is gently rolling, but some 

 parts of this county are rather hilly. This rolling condition with a 

 loamy type of soil affords good natural drainage except in the bot- 

 toms, which are practically all tile drained. The land is usually not 

 too steep for the profitable use of improved machinery. (Table 

 XIV.) 



Table XIV. — Tillage practices with com in Tama County, Iowa, showing depth 

 of plowing, implements used in order of use, number of times each is used, 

 and normal yield of the crop. 



[In columns 3,4, and 6 to 9 the figures show the order in which the implement was used on the several 

 farms; as, 1 = first working or cultivation; 2 = second working or cultivation, etc.] 





o 



.5 



CJj 



a 



'%■ 



o 



o 



s< 



C9 



a 



Tillage after plowing 

 and before planting. 



Tillage after planting. 



"3 



3 





Harrow. 



CO 



be 



•S 



hi 



o 



is 



3 



o 



u, 



C3 



O 



O 



£ 



'ft 

 CO 



2-horse. 



Total cultivations. 



o 



Farm No. 



5 



o 



p 



<b 



CO 



Cultivator. 



co 

 1 



co 

 -d 



CO • 



II 



(-. O 

 M 



H 



co 

 ft 



d 



t, CO 



<» a 

 & 



o 



a 



s 



o 



3 



CO 



Ph 



-d 





'3 

 s> 

 o 

 a 



s 



'p. 

 "ca 



s 



o 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



n 



12 



13 



1 



5 

 5 

 5 

 4 

 5 

 5 

 4 

 5 

 5 

 5 

 5 

 6 

 t; 



4 

 6 

 5 

 4 



6 

 4 

 3 

 5 



7 

 4 

 « 



6 



3 

 2 

 3 

 1 



1,2 

 1 



1.2 

 3 

 3 



1.2 



1 

 1 

 1 

 1 



1.2 

 1 



1.2 

 1 



1 

 1,2 



1 



1 



i. ! 



1,2,4 



1,3 



1,2,4 



2 



3,4 



2,3,4 



3 



1,2 



1,2 



3,4 



1.2 



2 



2 



2 



2,3 



3,4 



2 



3,4 



2,3 



1,2 

 2,3 



3 



2 

 2 



■'., 1 



4 

 3 

 4 

 2 

 4 

 4 

 3 

 3 

 3 

 4 

 2 

 2 



2 

 3 

 4 



4 



3 

 3 

 2 

 2 

 4 



1,2 



1 



1,2 



1,2 

 1,2 

 1,2 

 1,2,3 

 1,2,3 

 1,2 

 1,2 

 1,2 

 1,2 

 1,2 

 1,2 

 1 

 1,2 

 1,2 

 1,2 

 1,2 

 1,2 

 1,2 



1 



1,2 



3,4,5 



2 to 5 

 3,4,5 



4,5 



3 to 6 

 3,4,5 



3 to 6 



4 to 7 

 4,5,6 

 3,4,5 

 3 to 6 

 3,4,5 

 3 too 

 3 toO 

 3 to 6 

 2,3,4 



3,4 



3 toe 

 3 to 6 



3,4,5 



8,4,5 



1 to 4 

 2,3,4 

 3 to 6 







2 

 1 

 2 

 3 

 2 

 2 

 2 

 3 

 3 

 2 

 2 

 2 

 2 

 2 

 2 

 1 

 2 

 2 

 2 

 2 

 2 

 2 

 

 1 

 2 



3 

 4 

 3 

 2 

 4 

 3 

 4 

 4 

 3 

 3 

 4 

 3 

 4 

 4 

 4 

 3 

 3 

 4 

 3 

 4 

 3 

 3 

 4 

 3 

 4 



5 

 5 

 5 

 5 

 6 

 5 

 6 

 7 

 6 

 5 

 6 

 5 

 6 

 6 

 6 

 4 

 5 

 

 5 

 6 

 5 



•1 

 4 

 (> 



45 



2 







40 



3 







45 



4 





1,2,3 



65 





63 



o 







60 



7 







45 



X 







40 









45 



10 







45 



11 







35 



12 







48 



13 







30 



14 







35 



Ifi 







45 









20 



17 



5 





40 



IS 



50 



19... 







45 



■u 



50 



_■] 







55 



22 







30 



23 







40 



24 







40 









60 











Farms usIjik, 





92 



100 





92 



100 



4 



4 



90 









A : ■ 



:, i 





8 





3. 1 



6.3 



46.6 









1 







