EXPERIMENT STATION BULLETINS. 



521 



Tb(; .simmier spraying ol" i)ea('li orclunds may be a \»>iy itrotilabic 

 practice iu preventing decayed, scabby and wormy fruit. Tlic rot usually 

 appears just before harvesting and may develop in the package after 

 shipjDing. The scab (the black specks on the skin) seriouslj^ detracts 

 from the appearance, and the work of the curculio produces blemishes. 

 Spraying also increases the bright and desirable color, so much that some 

 progressive growers find it ''pays to spray for color." 



The above troubles are commonly found in most Michigan peach 

 orchards, and may be best controlled by the following sprayings. 



Just Before the Blossoms Drop and ^Iost ok the "Sihcks"' Have 

 Fallen: In orchards where the curculio is found to l)e serions, make a 

 spraying of poison, using 2 pouiuls of arsenate of lead paste or I pound 



Fig. 4. — Too lato to spray for poach leaf curL Bail case of poach loaf curl. 



(»r Ihe powder with 2 or :'> pounds of slaked lime fto make sure there will 

 not be any foliage burning), in 5U gallons of water. 'IMiis jtoison is l)et(er 

 for peach spraying than any other. If the curculio is not present or not 

 serious, this spraying need not be made. 



About Two Weeks After the '^Shucks'' Uave Kallex^ make a spray- 

 ing with self-boiled lime-sulphur, and to every ')(> gallons athl 2 ])oun(ls 

 of arsenate of lead i)aste or L pound of arsenate of lead ])o\V(ler. 1Mie 

 self-boiled lime-sulphur settles rapidly, so keep well agitated and do uoi 

 add the arsenate of lead until just before spraying. Use fine nozzles ami 

 give the tree a uniform coating <)f mist like spray. This spraying is to pre- 

 vent the fruit rot, scab and the curculio. 



About One Month Before the Fruit Ripens spray once more as di- 

 rected above. 



Peacpi Tree Borer. Dig out by hand early in the spring or late in the 

 fall at points where the gumming shows. Sterilize the knife with 2 to 



