106 Proceedings of Indiana Academy of Science 
Crop Value, 1920 
COlie wen ted one ane git eee een eet e eet eee teen ees $119,647,000 
OCA COGS eee re rere Kerra tre TEMG Kage Ue role: Shenson 8,448,000 
Sweet Mota tOCS mare ee ores eusbots ene Co yacetetch tuck cPedeast oc eee 396,000 
TOD ACCOR nse cae Oe elo Cee te te Soayely Suatee Ie aeere omen meal 2,160,000 
(Os auUai tts), optics Pate Oe Dir eet CPR PCIe Pea MORE hameeeet ce OO cee 1,456,000 
perewum Cuneiicial \eStiMAbe) = .. <s/..le ere alanis 5 2 dete eee 738,000 
Sabet sitchen i os oak pls chive Raya ale Oe to hse: ARs © 114,000 
ID ROOIIA CORN: Reser yaar. oh 3s TEA Re tS Mad es Rete tau Aeon: aerate 17,000 
Diryabeaiiss 1) ils sete oe. iewias)- ess AB ae ole fete Len 6 OAR Sea 91,000 
Soy beans (based on 80% of crop cultivated).............. 97,600 
Cowpeas (based on 40% of crop cultivated).............. 100,800 
Total value of tilled crops in Indiana (1920).......... $1338,265,400 
One-sixth of total value (cost of cultivation)............. $22,210,900 
Tillage loss (one-half of cost of cultivation).............. 11,105,450 
Loss Due to Reduced Crop Yields Caused by Weeds—The presence 
of weeds has been estimated to reduce the yield of corn 10 per cent; 
tame hay, 3 to 16 per cent; potatoes, 6 to 10 per cent; spring grain, 
12 to 15 per cent; and winter grain, 5 to 9 per cent.’ The total value 
of farm crops in Indiana during 1920 was $274,150,000. Assuming 
that the presence of weeds caused a 10 per cent reduction of crop yields, 
the loss would be $27,415,000. 
Discount Losses—The presence of weed seeds in small grains is 
estimated to cause an average discount of 1 per cent. The discount 
may be considered as a measure of the damage due to the presence of 
the weed seeds. The total value of wheat, oats, barley, and rye during 
1920 was $80,272,000, henee the discount loss in these crops was $802,720. 
The discount loss caused by weed seeds in clover seed is estimated 
at 10 per cent. The value of the clover seed crop in 1920 was $1,392,000, 
hence the discount loss was $139,200. Figures are not available for the 
value of the grass seed crop during 1920. 
The presence of weeds in hay is estimated to cause a diseaumat of 
5 per cent. The total value of the 1920 tame hay crop was $49,060,000, 
consequently the loss was $2,453,000. 
The total discount loss can then be figured: 
STEALS nn SULT sel -a'fah s+, aso fays EA Deed taps. <a SE Arete oes ae tt ae, eA $802,720 
GOV Clin aagccetae at ot a ond, stegeinguia n= #2 alm eae ea ace apie: Eee 139,200 
ERNST Sad andi my nce oh ena Aine a DAG (es Gis: 4 de tnlate he’ eon ace 2,453,000 
$3,394,920 
Loss Due to Land Rendered Incapable of Profitable Cultivation— 
The presence of the Canada thistle, wild garlic and other noxious peren- 
nial weeds has made certain areas incapable of profitable cultivation. 
Although the amount of land abandoned to weeds is not large in In- 
diana, it is a factor worthy of consideration. Land of this character 
occurs for the most part as small areas on a number of farms. The 
1 Cates, H. R.—‘‘The Weed Problem in American Agriculture.’ Separate from year- 
book of the Department of Agriculture, 1917, No. 732, p. 3. 
