EXPERIMENT STATION BULLETINS. 353 



If worms trouble after this, use p.yrethrum or hellebore. 



Leaf bugs or aphids may appear. When they do, spray with nicotine 

 or strong tobacco water while the bugs are red and wingless and before 

 the leaves have become curled. 



(JoosKRERUY MiLDKW IS a I'lin.yous disease Ihat is especially troublesome 

 on the English varieties as Industry, Columbus and Chautauqua. Spray 

 with dilute lime-sulphur. Begin when the buds start and repeat every 

 10 days to two weeks until near picking time. 



When Pruning, if a cane is cut that shows discolored pith, it may 

 indicale the cane borer. Cut back to sound pith. Burn trimmings. 



Wilted Foliage at any time indicates the cane borer. Cut out and 

 burn. 



GENERAL TREATMENT FOR RASPBERRIES, BLACKBERRIES 



AND DEWBERRIES. 



Cut out the Fruit Bearing canes after the last picking has been 

 made. This will lessen insect and disease troubles that may be har- 

 bored on the old canes and allow more room for the growth of the new 

 canes. 



Orange Rust may appear in May or June. It is easily identified by 

 the bright orange color on the under side of the leaves. There is no 

 method of preventing this trouble. As soon as it is found, the bush 

 should be dug out and burned. If allowed to remain the disease will 

 spread and destroy many plants. - 



Anthracnose^ identified by the grayish spots on the canes (also on 

 leaves, but not conspicuous), is common in many berry fields. It does 

 not yield to spraying unless very frequently done Avith Bordeaux mix- 

 ture' and this may not be profitable. If desirable, make the first spray- 

 ing when the new canes are 6 to 8 inches high and repeat every two 

 weeks during the growing season. 



Cutting out and burning the old canes immediately after fniiting will 

 be of some benefit. In starting a new field, make a special efifort to 

 secure healthy plants. 



"Worms'' or "Slugs'' might appear at any time. Spray with an 

 arsenical if early in season, but if near picking time, use hellebore or 

 pyrethrum. 



Cut out and burn gouty galls, tree cricket eggs or borers in stems. 



GENERAL TREATMENT FOR STRAWBERRIES. 



Examine the young plants before setting them. Pick off all discolored 

 or diseased leaves. If root lice are suspected, dip the roots in strong 

 tobacco water. 



After the growth starts, spray with Bordeaux and a poison to prevent 

 the leaf spot and to destroy the leaf-roller insect that may be present. 



For fniiting plantations, Sj)i'ay with Bordeaux before blossoming and 

 45 



