CRANBERRY INSECT PROBLEMS. 



37 



The Putnam scale is a formidable enemy, attacking not only the 

 woody parts but also the leaves and fruit. Badly encrusted vines 

 become very red of foliage and may be detected from a considerable 

 distance. -Infestation is likely to occur in areas, dotted here and 

 there ove$- the bog, from 2 or 3 feet in diameter to those comprising 

 several s<|hare rods. Infested fruit becomes unsuitable for market- 

 ing and infested vines bear dwarfed fruit or are killed outright. 



The use of water as a control for the Putnam scale seems to be 

 barren of results, for the scales in the immature form hibernate 

 beneath the winter fiowage, and bogs that frequentl}^ are reflowed 

 continue to be infested by them. They are difficult to reach by 

 spraying, not only because the foliage prevents the spray from 

 wetting them thoroughly^ but also because many of the scales settle 

 on the runners buried in the trash. Mowing the infested vines in 

 the early spring, removing and burning the cut vines, and spraying 

 the area with pure kerosene may prove to be an effective treatment 

 Kerosene also may be used on the vines about the middle of August 

 with fair impunity to the foliage but with damage to the fruit. 

 This spray should be applied as a fine mist and used with care. 

 Both lime-sulphur and a commercial preparation of soluble oil have 

 proved harmful to dormant vines when used at the proper dilution 

 for scale-killing. A fungous 

 parasite ^ seems to be doing 

 good work on certain bogs in 

 destroying scales. 



ROOT -ATTACKING INSECTS. 



CRANBERRY ROOTWORM.2 



Insects whose feeding on the 

 roots of cranberry is of much 

 consequence appear to be few, 

 but of these the cranberry 

 rootworm is probably the most 

 injurious. Undoubtedly this 

 has been long a pest of cran- 

 berry, but its discovery in that 

 connection was not made until 

 recently in Ncav Jersey. Tlie 

 beetle has been found lately 

 on a Long Island bog and the 

 pest has been discovered on 

 cranberry in Massachusetts. 



Fig. 33. — Mealybug, Pscudofoccufi adonidum: 

 Colony of iiiealyl)Ug.s 011 (raul)oiTy runuer. 

 ]Nnich enlarged. 



1 i^pharroxtilhr cnrcopJiila (Des.) Tul, 



■ Rhnhd'iptcru-s picipcs Oliv. 



