Table 69. Summary by Age and Primary Occupation of Principal Operator: 2012 (continued) 
[For meaning of abbreviations and symbols, see introductory text.] 
Total farming 
and other 
occupations 
Farming 
Item 
Total 
Age of operator (years) 
Under 25 
25 to 34 
35 to 44 
45 to 54 
55 to 64 
65 and over 
FERTILIZERS AND CHEMICALS 
Commercial fertilizer, lime, and soil 
conditioners used 
farms 
54,093 
37,847 
273 
2,339 
3,799 
8,843 
11,526 
11,067 
acres treated 
19,641,333 
17,520,448 
69,770 
937,903 
2,001,652 
5,138,144 
5,943,652 
3,429,327 
Manure used 
farms 
19,443 
14,686 
84 
1,056 
1,808 
3,998 
4,540 
3,200 
acres treated 
2,347,716 
2,110,093 
8,660 
130,522 
293,546 
667,631 
682,468 
327,266 
Acres treated to control- 
Insects 
farms 
27,915 
20,544 
159 
1,411 
2,311 
5,050 
6,139 
5,474 
acres 
9,204,573 
8,206,488 
45,485 
476,185 
977,473 
2,403,380 
2,690,457 
1,613,508 
Weeds, grass, or brush 
farms 
53,988 
37,629 
266 
2,304 
3,761 
8,791 
11,461 
11,046 
acres 
23,200,379 
20,765,188 
74,691 
1,041,217 
2,323,507 
6,006,095 
7,130,841 
4,188,837 
Nematodes 
farms 
4,353 
2,917 
46 
274 
307 
624 
895 
771 
acres 
1,045,726 
884,115 
9,596 
94,206 
92,471 
218,323 
299,035 
170,484 
Diseases in crops and orchards 
farms 
5,302 
3,740 
51 
399 
471 
969 
1,106 
744 
Chemicals used to control growth, 
acres 
1,702,624 
1,508,509 
10,159 
157,042 
205,127 
488,345 
430,889 
216,947 
thin fruit, ripen, or defoliate 
farms 
352 
204 
3 
13 
22 
43 
55 
68 
acres on which used 
13,981 
9,080 
(D) 
(D) 
1,071 
2,150 
2,687 
2,501 
LAND USE PRACTICES 
Land drained by tile 
farms 
40,926 
28,013 
206 
1,762 
2,728 
6,609 
8,681 
8,027 
acres 
12,631,135 
11,213,409 
43,516 
557,057 
1,218,435 
3,305,595 
3,908,782 
2,180,024 
Land artificially drained by ditches 
farms 
10,084 
6,129 
49 
373 
530 
1,328 
1,825 
2,024 
acres 
1,669,073 
1,413,687 
8,778 
72,949 
171,477 
385,205 
470,963 
304,315 
Land under conservation easement 
farms 
3,301 
2,028 
12 
85 
171 
473 
628 
659 
Cropland on which no-till practices were 
acres 
332,222 
256,479 
1,092 
18,764 
34,193 
61,891 
81,689 
58,850 
used 
farms 
22,621 
16,431 
113 
1,069 
1,645 
4,064 
5,016 
4,524 
Cropland on which conservation tillage, 
including no till, practices were 
acres 
6,950,836 
6,238,242 
22,092 
359,305 
708,594 
1,772,249 
2,109,636 
1,266,366 
used 
farms 
24,911 
18,887 
111 
953 
1,675 
4,670 
6,181 
5,297 
Cropland on which conventional tillage 
acres 
8,760,348 
7,921,720 
21,245 
292,633 
730,415 
2,375,013 
2,887,945 
1,614,469 
practices were used 
farms 
25,559 
17,613 
162 
1,365 
2,144 
4,150 
4,909 
4,883 
Cropland planted to a cover crop 
acres 
7,882,556 
6,985,289 
32,825 
391,869 
924,681 
1,968,302 
2,265,081 
1,402,531 
(excluding CRP) 
farms 
7,195 
5,064 
28 
309 
637 
1,226 
1,521 
1,343 
acres 
379,614 
326,532 
1,295 
21,443 
42,785 
98,846 
96,858 
65,305 
ENERGY 
Renewable energy producing systems 
farms 
2,463 
1,536 
3 
74 
149 
357 
523 
430 
Solar panels 
farms 
406 
225 
- 
25 
30 
44 
58 
68 
Wind turbines 
farms 
916 
674 
- 
29 
50 
159 
257 
179 
Methane digesters 
farms 
2 
1 
- 
- 
- 
1 
- 
- 
Geoexchange systems 
farms 
1,172 
665 
3 
27 
68 
156 
224 
187 
Small hydro systems 
farms 
18 
7 
- 
- 
3 
1 
1 
2 
Biodiesel 
farms 
1 
1 
- 
- 
- 
1 
- 
- 
Ethanol 
farms 
1 
1 
- 
- 
- 
1 
- 
- 
Other 
farms 
13 
7 
" 
2 
1 
- 
1 
3 
Wind rights leased to others 
farms 
899 
655 
- 
17 
47 
147 
234 
210 
TENURE 
Full owners 
farms 
49,525 
19,043 
65 
711 
1,402 
2,889 
4,760 
9,216 
Part owners 
farms 
30,025 
23,423 
111 
1,339 
2,519 
6,327 
7,886 
5,241 
Tenants 
farms 
9,087 
5,483 
175 
874 
844 
1,231 
1,380 
979 
OWNED AND RENTED LAND 
Land owned 
farms 
80,149 
42,866 
176 
2,063 
3,945 
9,253 
12,758 
14,671 
acres 
18,076,106 
12,709,353 
14,168 
285,191 
885,307 
2,750,254 
4,063,058 
4,711,375 
Owned land in farms 
farms 
79,550 
42,466 
176 
2,050 
3,921 
9,216 
12,646 
14,457 
acres 
14,379,151 
10,988,546 
12,719 
251,424 
803,975 
2,534,822 
3,643,497 
3,742,109 
Land rented or leased from others 
farms 
39,303 
29,012 
286 
2,215 
3,372 
7,574 
9,294 
6,271 
acres 
16,333,494 
14,726,607 
74,311 
976,938 
1,959,440 
4,589,482 
5,044,726 
2,081,710 
Rented or leased land in farms 
farms 
39,112 
28,906 
286 
2,213 
3,363 
7,558 
9,266 
6,220 
acres 
16,243,580 
14,658,898 
74,311 
974,846 
1,944,760 
4,583,008 
5,019,949 
2,062,024 
Land rented or leased to others 
farms 
21,581 
9,296 
18 
249 
497 
1,390 
2,438 
4,704 
acres 
3,786,869 
1,788,516 
1,449 
35,859 
96,012 
221,906 
444,338 
988,952 
NUMBER OF OPERATORS 
Total operators 
Farms by number of operators: 
number 
131,535 
70,957 
522 
4,298 
6,945 
15,459 
20,834 
22,899 
1 operator 
53,202 
29,315 
224 
1,772 
2,941 
6,409 
8,516 
9,453 
2 operators 
29,863 
15,359 
91 
999 
1,562 
3,314 
4,513 
4,880 
3 operators 
4,454 
2,612 
31 
115 
199 
567 
813 
887 
4 operators 
787 
461 
3 
24 
46 
115 
135 
138 
5 or more operators 
331 
202 
2 
14 
17 
42 
49 
78 
Total women operators 
Farms by number of women operators: 
number 
32,907 
15,326 
66 
883 
1,488 
3,221 
4,423 
5,245 
1 operator 
30,451 
14,264 
55 
837 
1,382 
2,994 
4,110 
4,886 
2 operators 
948 
400 
1 
12 
41 
79 
127 
140 
3 operators 
133 
55 
3 
6 
3 
10 
11 
22 
4 operators 
21 
9 
- 
1 
- 
2 
4 
2 
5 or more operators 
12 
9 
- 
- 
3 
3 
2 
1 
See footnote(s) at end of table. -continued 
200 Iowa 
2012 Census of Agriculture - State Data 
USDA, National Agricultural Statistics Service 
