FORTY-FIRST ANNUAL REPORT. 169 



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

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

 not yield to spraying unless very frequently done with bordeaux mix- 

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

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

 weeks during the growing season. 



Cutting out and burning the old canes immediately after fruiting will 

 be of some benefit. In starting a new field, make a special effort 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 dis- 

 colored 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 pre- 

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

 present. 



For fruiting plantations, spray with bordeaux before blossoming and 

 repeat ten days to two weeks later. After fruiting if the bed is to be 

 fruited again, mow and burn over quickly (as on a day when there is a 

 wind, to avoid burning the crowns of the plants). If leaf rollers have 

 been present, spray with poison after the growth has started again but 

 before the leaves curl. 



For strawberry root lice, see Michigan Bulletin No. 244 page 88. 



GENERAL TREATMENT FOR POTATOES. 



For the Potato Scab. Soak the uncut tubers for two hours in 30 

 gallons of water and one pint of formalin (can be secured of any drug- 

 gist). This solution can be used several times. Do not put treated 

 tubers back into crates or bags that held scabby potatoes. Make the 

 treatment only a few days before planting if possible. Do not plant 

 upon land that has recently grown crops of scabby potatoes or beets. 



For the Blight and "Bugs." Begin spraying with bordeaux mix- 

 ture and poison when the "bugs" first appear, or when the plants are 

 about 8 inches high, and repeat about every 2 weeks as long as the 

 plants are growing. Spray often in warm, muggy weather; fewer spray- 

 ings are necessary in dry weather. 



Use bordeaux mixture (6 pounds copper sulphate and 4 or 5 pounds 

 of lime to 50 gallons of water, and put in the poison, about % pound 

 of Paris green or 2 pounds of arsenate of lead, or 1 quart of the stock 

 solution of Kedzie mixture). 



Dilute lime-sulphur will not do as a substitute for the bordeaux for 

 potatoes. 



