14 



MASS. EXPERIMENT STATION BULLETIN' 390 



Late fall or early spring, before 

 the buds start !o swell. 



SPRAY PROGRAM 

 Fall Dormant — If European red mite eggs are absent, this spray may be used 

 to control leaf curl. Apply in late fall, after lea\es drop, lin.e sulfur, liquid 7 

 gallons or dry 18 pounds, water to make 100 gal- 

 lons; or Bordeaux mixture 8-8-100. For a few trees 

 it may be more convenient to use dry lime sulfur 

 12 level tablespoonfuls, water to make 1 gallon, or 

 dry Bordeaux mixture. Where this spray can be 

 used, it saves valuable time in the spring. 



Spring Dormant • — If the Fall Dormant was 

 omitted, ajjply early in spring before buds start to 

 swell. If European red mite eggs or San Jose scale 

 are absent, use lime sulfur or Bordeaux mixture as 

 in the Fall Dormant for the control of leaf curb 

 If European red mite eggs or San Jose are present, 

 apply Bordeaux mixture 8-8-100 for leaf curl anri 

 add a miscible oil or oil emulsion, according; to 

 directions on the container, to control these insects. 

 For a few trees it m.ay be more convenient to spray 

 with dry Bordeaux mixture, adding oil emulsion 

 or miscible oil. Dilute each material according to 

 recommendations on the container. 



Pink — Apply when the blossom buds show pink 

 to control brown rot. Use a wettable sulfur as 

 recommended by the manufacturer. Dusting sul- 

 fur, 300-mesh or finer, may be used instead of a 

 spra\'. Unless exceedingly moist conditions prevail, 

 this application may be omitted in orchards w here 

 brown rot was kept under control the previous 

 season. 



Wettable sulfur is a sulfur which has been treated 

 with a wetting agent so that it will mix with water. 

 It is a mild form of sulfur which is m.uch less likely 

 to cause Injury than either liquid or dry lime sul- 

 fur. The manufacturer's recommenda- 

 tions as to dilution should be followed 

 carefullv. 



Proper stage for dormant spray. 

 When blossoms show pink. 



Proper stage for pink spray. 



Shuck — Appl^- when the shucks are 

 splitting. This spray (wettable sulfur as 

 recommended by the manufacturer, lead 

 arsenate 2 pounds, zinc sulfate 4 pounds, 

 freshl}' hydrated lime 4 pounds) is pri- 

 manly for curculio control, but also helps 

 in the control of brown rot and scab. For 

 a few trees it may be more convenient to 

 use wettable sulfur 3 level tablespoonfuls, 

 zinc sulfate 1 level tablespoonful, freshly 

 hydrated lime 2 level tablespoonfuls, lead 



Just as the shucks start to fall. 



5" 



Proper stage for "shucks" spray 



