352 The Principles of Fruit-groidng 



PowDBEY Mildew (Podosphxra oxycanthx). — Leaves and twigs 

 affected, often causing defoKation. 



Spray with lime-sulfur, 1-40, or dust heavily with pow- 

 dered suKur. 

 Slug {Eriocampmdes limacina). — Larva J^ inch long, blackish 

 and slimy, feeding upon the leaves; two broods. 

 Arsenicals, hellebore, tobacco extract. 

 Chestnut. Canker, or Bark Disease {Endoihia parasitica). — 

 Sunken or swollen cankers on Umbs or trunk. Limbs die and 

 leaves and burs cHng in winter. 



Control. — Remove diseased parts and bum. Paint all 

 wounds. Little chance of saving trees in infested locality. 

 Weevils {Balaninus proboscidexis and B. rectus). — Brownish 

 beetles with extremely long, slender snouts with which 

 they bore holes into the nuts for deposition of eggs. The 

 grubs feed on the kernel, producing wormy nuts. 



Treatment. — No satisfactory control measures known. 

 Two-lined Chestntjt-boreb (Agriliis hilineaius). — Slender, 

 flattened grubs, % inch long, when mature, burrowing xmder 

 the bark and girdhng the trees. 



Treatment. — Cut and burn infested trees to prevent spread. 

 Cranberry. Blast, or Scald {Guignardia vaccinii). — Young flower 

 and fruits blasted, older fruits appear scalded or watery. 



Spray five or six times with bordeaux mixture, 5-5-50, to 

 which has been added four pounds of resin fish-oil soap. 

 Begin just before the blossoms open. 

 Cranberry Fulgorid {Phylloscelis atra). — Small, broad-bodied, 

 black, jumping insect punctures the vines, causing the leaves 

 to turn brown and the fruit to shrivel. 



"Black leaf 40" tobacco extract, one pint to one hundred 

 gallons of water, adding four to five pounds of soap to kill 

 young nymphs. 

 Cbanberry-qirdlbr {Crambus hyrtuellus). — Small caterpillar, 

 feeding on the stems just beneath the surface of the sand. 



Reflow just after picking, for a week or ten days, or reflow 

 for a day or two about June 10. 

 False Army- Worm {Calocampa nupera). — Green to blackish 

 caterpillars devouring the leaves and buds. 



Reflow for from twenty-four to thirty-six hours soon 

 after the middle of May. It may be necessary to reflow a 



