24 AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS. 



species, many have failed to grow as well as do those in sections to the 

 west and east. However, there are fine examples on the campus of the 

 Agricultural and Mechanical College and in neighboring towns of live, 

 water, red, overcup, burr and other oaks, bald cypress and pecan, as 

 well as trees from other sections of this country and abroad. Among 

 the most interesting of these are cork oak, Cedrus deodora, Lawson 

 cypress, and Japanese varnish. The most common trees through this 

 section are hackberry, American and cedar elms, post oak and red cedar. 

 Many trees which have not as yet been tried or the success of which 

 has not been fully demonstrated may in the future prove to be desirable. 

 It is not possible in this bulletin to discuss species for an area as large 

 as Texas and do ju&tice to many trees which are undoubtedly adaptable 

 to one region or another. 



WINDBREAK AND WOODLOT TREES. 



The main requisites in a species for windbreak planting are long life, 

 density of foliage and compactness of crown and root system. Since 

 the windbreak may be cultivated, thus conserving the available soil 

 moisture, the choice of species is fairly wide. Honey locust (the thorn- 

 less variety is easier cultivated), osage orange, Russian wild olive, green 

 .ash, American elm, Russian golden willow and cotton wood are com- 

 monly used. If conifers are desired one may plant Austrian pine, 

 ^Scotch pine, Chinese arbor vitae and a number of cedars. Red cedar 

 should not be planted around orchards since this tree is a host plant 

 for a transition stage (cedar apple) in the life of a fungus attacking 

 fruit trees. A row of Russian mulberries or osage orange trees is fre- 

 quently used as a preliminary planting on the windward side of a 

 windbreak. , 



For fence post planting the species selected should combine dura- 

 bility of the wood in contact with the ground with comparatively rapid 

 growth. Durability, however, in view of the present methods of treat- 

 ing posts to prevent decay is becoming less important. The black 

 locust, in regions where the locust borer is not a menace, honey locust, 

 osage orange, Russian - mulberry and hardy catalpa, where soils are rich 

 and considerable moisture is available, are among the best of the hard- 

 woods for fence post plantations. Of the conifers, Chinese arbor vitae 

 and red cedar may be planted. If it is the purpose to treat the posts 

 before setting them one may include green ash, cottonwood, silver maple 

 and elm in the list. 



For woodlot planting adaptability to local growing conditions is the 

 primary factor in choosing the species. A plantation established for 

 fence post production will yield fuel wood as a by-product of the neces- 

 sary thinnings, but should one plant for fuel alone, the cotton wood, 

 green ash and black locust are comparatively fast growing and among 

 the best which can be used. 



CARE OF TREES AFTER PLANTING. 



Failure too often results through lack of systematic care after plant- 

 ing. The trees have been transferred to a totally different environ- 



