14 



visable to spray more than once for the second brood, on account of 

 the long hatching period of the eggs. 



Recomviendatioiis for treatment'. — 



1 . Jf this i/isect beawies injurious on a hog which has neater for 

 7i>inter Jlowage, hold tliis JJowage until after the 20th of May, and thus 

 keep the moths off the bog utitil they hai'e deposited their eggs ofi the 

 7'arious upland plants, which they will seek ij they cantioi get the cran- 

 berry. 



2. On dry bogs, spray for both broods ivith arsenate of lead used at 

 the rate of seven pounds to ffty gallons of water as soo7i as the eggs 

 begin to hatch (approximate dates: ATay /j" and July f). In case of a 

 wet season, follow the first spraying for the second brood with an- 

 other applied at the same strength and about ten days later than the 

 first. 



THE CRANBERRY GIRDLER. 



Cr ambus hortuellus (Hiibner). 



The cranberry is not the only food plant of this insect, nor, indeed, 

 is it the preferred one. Grasses and other plants are readily attacked 

 by it, and the cranberry feeding habit seems to have been secondarily 

 acquired. The insect is commonly known on the Cape as the " root 

 worm " and the " girdle worm." The moths are first seen flying 

 early in June, and they continue on the wing in small numbers, as late 

 as the last days in July. The caterpillars feed on the stems of the 

 vines just beneath the surface of the sand, causing a characteristic 

 girdling injury, which later as a result, causes the foliage to wither 

 and turn brown. Sometimes, when there is a serious infestation, 

 this browning is seen over considerable areas. A similar effect is 

 often seen resulting from fungus or other injury, but the girdler's 

 work may be recognized by the girdled appearance of the dead or 

 dying vines at or just beneath the surface of the sand. The worms 

 become full grown in November, and then make their cocoons of silk 

 and sand in which they pass the winter to pupate in late spring. 



The conditions under which the caterpillars feed prevent treatment 

 with sprays. Some growers claim that heavy sanding of bogs 

 attacked by the girdler gives satisfactory results. Whether such 



