FORESTER'S REPORT. 39 



difficult as the borers live in the trees two full years. It is 

 advised that the borers be pursued in their burrows with wires 

 or with carbon disulphid and . especially that insectivorous 

 birds, which eat the moths, be encouraged. 



WHITE PINE BLISTER RUST. 



This dreaded disease, which in 1909 threatened to become 

 established with us, is apparently under complete. control so far 

 as New Jersey is concerned. A few affected trees were found 

 in two small .nurseries but the owner of each readily consented 

 to the destruction of the entire stock. Notwithstanding this 

 it is still advised that white pine be not. planted in large quanti- 

 ties, but rather mixed with other species which are not sus- 

 ceptible. 



MAPLE BLIGHT. 



Many reports have been made of failing maple trees, chiefly 

 sugar maples and .norway maples. In most cases, the trouble 

 was traced to a deficiency of water or to a lack of nutriment. 

 The remedy is to supply .these deficiencies, and in some cases 

 to reduce the draft on the roots by thinning the crown. This 

 should be done by .inside pruning, rarely by outside pruning, 

 never by topping. 



STARVATION. 



Forest trees. rarely suffer in this way, or from lack of water, 

 because Nature has provided for a supply of both in the unre- 

 moved litter on the ground and in. the -unrestricted root system. 

 It is a fact, however, that more shade trees are lost through 

 starvation or thirst than in any other way. Owners are advised, 

 first, to see that their trees do not lack water; if rain fails apply 

 the hose. A drenching once a week is better than a sprinkling 

 every day. Second, to be sure that the roots of the trees are 

 not cut off from air by a close pavement, or even by a thick sod. 

 The best condition is afforded. by a free earth space about the 

 base of each tree which is kept well cultivated. Third, to apply 

 fertilizer .every spring. If a tree has lacked for a number of 



