338 



FARM MANAGEMENT AND CROP ROTATIONS 



The plan of rotation and fertilization for this farm is sum- 

 marized in the following lotation chait 



Rotation Chart for Problem III 



Year 



Field I 

 (12 acres) 



Cowpeas 



Oats (cowpeas 

 to plow under) 



Com (500 lbs 



acid phosphate 



+ available 



manure) 



Cotton (500 

 lbs acid phos- 

 phate + 600 

 lbs cotton-seed 

 meal) 

 Cowpeas 



Field II 

 (12 acres) 



Corn (500 lbs 



acid phosphate 



per acre) 



Cotton (500 

 lbs acid phos- 

 phate + 600 

 lbs cotton-seed 

 meal) 

 Cowpeas 



Oats (followed 

 by cowpeas) 



Corn (500 lbs 

 acid phosphate 

 per acre) 



Field III 

 (12 acres) 



Cotton (800 

 lbs acid phos- 

 phate 4- 600 

 lbs cotton-seed 

 meal per acre) 

 Cowpeas 



Oats (followed 

 by cowpeas to 

 be plowed un- 

 der) 



Corn (500 lbs 



acid phosphate 



per acre) 



Cotton (phos- 

 phate fertilizer) 



Field IV 

 (12 acres) 



Oats (followed 

 by cowpeas) 



Corn (manure 



-f- 500 lbs acid 



phosphate per 



acie) 



Cotton (500 

 lbs acid phos- 

 phate -h 600 

 lbs cotton-seed 

 meal per acre) 

 Cowpeas 



Oats (followed 

 by cowpeas) 



Problem IV. — Sometimes it becomes necessary to produce much 

 more hay than either corn or grain. This does not necessarily- 

 mean that a definite rotation is not possible. For example, on a 

 certain farm 125 acres are under cultivation, and 115 acres are 

 permanent pasture. The farmer wishes to raise each year in rota- 

 tion twenty-five acres of oats, thirty-five acres of corn and sixty 

 acres of hay. 



One hundred twenty acres may be laid out into three forty-acre 

 fields, and each field cropped as is shown m Figure 221. 



Problem V, — ^Plan a system of cropping on a 160-acre farm 

 in Wisconsin, which consists of twtoty acres of drained peat, 

 twenty acres of fine sand, twenty acres of permanent pasture, and 

 the remaining portion of the farm consists of silt loam. All soils 

 are sufficiently supplied with lime. 



The following crops are to be grown: Forty acres of corn, about 

 thirty acres of hay (about ten of alfalfa), thirty to thirty-five acres 



