At harvest time he would first reap portion of his crop to secure a supply of horse feed for the following year, say, 10 acres:—

Reaping and haymaking, 2 men's wages for
three days at $1.92, food $0.48 per day
$14.40
Twine (for binding the sheaves)6.00
Harvesting the wheat crop: One man's wages
$1.92, food $0.48 per day for forty day
96.00
One hundred dozen bags at $1.68 per dozen168.00
Horsefeed, 5 tons chaff at $19.20 per ton96.00
Cartage, 1000 bags wheat at $0.18 per bag180.00
$560.40

This is reckoning the crop as averaging 15 bushels per acre, when the returns would be:—

15 tons of chaff (a low estimate)
at $19.20 per ton
$288.00
1200 bags of wheat, 3600 bushels
at $0.80 per bushel
2880.00
$3168.00
Less expenditure ($345.60, $560.40)906.00
Balance$2262.00

To be thoroughly correct we should allow for:—

Interest on plant, costing, say,
$1920.00 at 5 per cent.
$96.00
Depreciation of plant, 10 per cent.192.00
Rent on 250 acres at $1.20 per acre300.00
Total$588.00

And in addition allow for the value of the farmer's own labour:—