Kl'l'OKT UF STATE ENTOMOLOGIST. 49 



stroyecl by fumigation before it was set. The tree had made 

 but sHght growth, was badly infested by borers, probably killed 

 by them, and all of the old scale had not been shed. 



While inspecting orchards set for the Gregory contest, Mr. 

 Yeaton found a single tree infested with the San Jose scale. 

 All others were carefully looked over but no scale could be 

 found. The tree was removed and sent to the ofHce. We are 

 thus getting evidence that this much dreaded scale is with us 

 and that a most careful inspection of all young trees must be 

 made. We have enough pests now to contend with, and where 

 but comparatively few of our orchardists spray, we are surely 

 up against a very serious proposition in regard to this insect. 



A positive evidence that it can stand our climate is found in 

 the orchard above mentioned, for the trees were set at least 

 nine or ten years ago. As near as can be judged only one or 

 two trees were then infested. That was before the severe 

 winter of 1906 and '07. In 1909 live scale insects were found 

 crawling on about a dozen trees; some trees were completely 

 alive with them, from the ground to the outermost twigs. A 

 full life history of this insect was given in our annual report 

 for 1906. All who set trees should become sufficiently familiar 

 with the appearance of the scale to guard against a further 

 spread of the disease. 



WOOLLY APHIS Of APPLE- 



This pest was found on a few trees in many of the orchards 

 set this year, but only above ground, generally on the small 

 branches or where scars were left from the removal of limbs. 

 These were controlled by spraying as for the green aphis. 



A lot of nursery stock was sent into the State badly infested 

 with this pest, but it was condemned. See description under 

 "Infested Nursery Stock." 



This insect occurs on the roots under ground as well as on 

 the trunk and branches. On the root it often causes an enlarged 

 growth, forming a gall. This underground infestation is most 

 difficult to handle and is generally neglected entirely. From 

 what observations we have been able to make, and they are 

 many, we are of the opinion that this insect does more damage 

 in Maine than in almost any other state. We have found it 

 infesting trees direct from the nursery and from that age up 

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