40 University of New HAMrsHiRE [Sta. Bull. 522 



of potatoes. The present layout, as can be noted from the map, has 

 resulted from the combination of two farms. (Fig. 20). 



Fields on the upper farm are especially suitable for potatoes and 

 so the tillage land is reserved for a four-year potato rotation — 

 potatoes, oats, and two years of hay. A total of about 30 acres 

 would make 7.4 acres available for potatoes each year. If less acre- 

 age in potatoes is desirable, the least favorable parts of the Held 

 can be sown to millet. The remaining- good tillage land totaling 27 

 acres would be operated as a six-year rotation for hay production, 

 one field being sown to oats and seeded down to clover and grass 

 each year. Lime and superpht»sphate would be applied to fields in 

 this rotation. 



Farm C represents a more complicated situation, since the opera- 

 tor has over 90 acres of tillage and has been able to grow silage on 

 some of the fields. (Fig. 21.) Twent\-six acres have been ap- 

 propriated for a four-year potato-hay rotation system. Forty-two 

 acres have been reserved for a six-year silage-hay rotation system 

 and the remaining 22 acres of tillage land are used for permanent 

 hay production. Some portion of this might be plowed occasional!}' 

 and reseeded but much of it would be left productive by top-dressing. 

 Some of it is wet or ledgy and difficult to plow. This plan reserves 

 a limited acreage of the best tillage land for potatoes on which little 

 or no lime would be applied. It incorporates the remaining good 

 tillage land into a rotation including silage and attempts to carry 

 the more difficult land with as little plowing as possible. 



