WHAT WE FIND IN SOILS 31 



soil under cultivation and when given certain crops that 

 seem to fancy these special types best. 

 Bear these things in mind : 



1. That sand areas, when properly reenforced with 

 humus, water, and plant food, are peculiarly adapted to 

 all kinds of truck crops. 



2. That early truck crops are more safely produced 

 when a maximum of sand and a minimum quantity of clay 

 prevail. 



3. That general or late truck crops are most safely pro-* 

 duced when the sand type carries the minimum of the 

 coarser and the maximum of the finer sand grades. 



CROP ADAPTATION 

 An apple orchard extending from loam to clay 



4. That fruit growing calls for considerable clay as a 

 part of the sand type. 



5. That the best corn crops are produced where neither 

 sand nor clay predominates the silt materials producing 

 the best results. 



6. That the general grain crops are best suited when 

 furnished a silt type of soil. 



