Fig. 11. At the beginning, rows 2, 3, 4, 5, 6, 7 and 8 are cut out. The rows 

 are replanted the same year to either evergreen or broadleaf trees. The original 

 trees in rows 1 and 9 are left temporarily for shelter and also to give some pro- 

 tection to the new crop of trees. 



f-f-frrft 



Fig. 12. After 5 years the trees in row 9 are cut out and replanted. The old 

 trees in row 1 preserve partly the effectiveness of the shelterbelt at some dis- 

 tance from the ground. If the interior trees are of the broadleaf class the 

 effectiveness of the shelterbelt would eventually be increased by planting ever- 

 greens in row 9. 



a market for this material except on the home place. Consequently, 

 it would entail a great waste of material, through decay, to store 

 up for a number of years a supply of fuel or posts made up of 

 undurable woods. 



At the beginning of the regeneration period, all except the two 

 outside rows of trees are removed and replanted. After five years' 

 time, the south row (no. 9) is removed and replanted. At the close 

 of another five-year period the last row of old trees (no. 1) is re- 

 placed. The outside rows being more thickly branched will give fair 

 protection against the wind. In case the trees are in such poor con- 

 dition that they will not last for even a few years, it would then be 

 desirable to take out all of the old trees at the first cutting. Under 

 such circumstances, a portion of the new growth should be made up 

 of the most rapidly growing trees available, in order that the grove 

 may become effective against the wind as soon as possible. 



The clear-cutting method, from a cultural standpoint can be more 

 generally applied than any of the other systems suggested. In a 

 pure plantation, established at one time, there is less danger of ex- 

 cessive crowding and overtopping, since the trees are equal in rata 

 of growth and shade-enduring qualities. If the new shelterbelt is to 



