TENTH ANNUAL YEAR BOOK— PART X 531 



In the management oC the fields the following general plan will he 

 followed: One field of corn will be drilled in rows instead of check- 

 rowed, and with the corn will be planted about a peck of cowpeas. At 

 the last cultivation of the corn a mixture of rye and rape will be sown 

 in the corn to furnish additional green feed for the hogs in the fall. 

 With the aid of movable fences this field of corn, cowpeas, rye and rape 

 will be harvested by the hogs themselves, the hogs being turned into 

 the field early in September of each year. 



The following year this field of corn, enriched by the planting of cow- 

 peas, the pasturing off of the whole field with hogs, and the plowing 

 under of the excess stubble and straw, will again be planted to corn. 

 The third year the field will be seeded to oats and clover and the oats 

 cut for grain. The fourth year the field will be in clover. A part of the 

 clover will be pastured by hogs, part will be cut for seed, and a portion 

 of the field plowed and seeded to a mixture of sorghum and rape for 

 midsummer pasture, as outlined in detail farther along in this bulletin. 



COXDITIOXS ASSUMED. 



In this plan, as in the others, it is assumed, in accordance with rea- 

 sons previously stated, that by the use of 400 pounds of bone meal or 

 its equivalent per acre on the corn and the growing of clover or an 

 equivalent legume crop on the land once every three or four years in 

 systematic rotation, the corn yield can be made to average on the farm 

 in question 60 bushels and oats 40 bushels per acre. 



For this type of farm also, as in previous plans, about 4 work mares, 

 2 cows, 2 colts, 2 calves, and in addition 1 boar will be kept. The grain 

 required for this stock will be 23,940 pounds. In order to reserve as much 

 corn as possible for the hogs, this stock will be fed 6S0 bushels of oats — 

 reserving 40 bushels for seed — which falls short 2,180 pounds of the re- 

 quired quantity. It will take 40 bushels of corn to make up this defic- 

 iency. In addition, 15 bushels of corn for the boar should be added. 



NUMBER OF BEOOD SOWS THAT CAX BE KEPT. 



Thirty-six acres of corn are grown in all and only one acre of it is 

 required for seed and for extra feed for the fixed stock. It will therefore 

 be safe to calculate roughly on about 35 acres of corn that may be fed 

 to hogs. But it has been assumed that each brood sow and each of her 

 six pigs will consume on the average 15 bushels of corn; therefore the 

 total quantity consumed by one brood sow and litter — seven pigs in all — 

 will be 105 bushels. At 60 bushels of corn per acre, 105 bushels repre- 

 sents 1.75 acres of corn required for each brood sow and litter; 35 acres 

 of corn land, then, will support 20 brood sows and their litters. 



PASTURE FOB HOGS. 



From the time clover pasture is ready in the spring until about June 1 

 the hogs will be pastured on five acres of an eighteen-acre field of clover 

 fenced off with a temporary hog fence. Up to about June 1 the suckling 



