68 MAINE AGRICULTURAL EXPERIMENT STATION. 



D. Summer dilution lime-sulphur containing 2 to 3 pounds of arse- 



nate of lead paste (1 to \ x k pounds of the dry powder) to 50 

 gallons, just as the blossom buds are showing pink. To combat 

 bud-moth, brown-tail moth, canker-worms, fruit worms, tent- 

 caterpillars, apple scab, leaf-spot, and fruit rot. If plantlice 

 are prevalent add Blackleaf 40, Y2 pint to 50 gallons. 



E. Repeat D as soon as the flower petals have fallen, for the same 



pests and the codling moth. 



F. Repeat D again about two and not over three weeks after the 



application E. 



G. If the season is very wet and favorable to the development of 



apple scab, or black rot is troublesome, later applications of 

 the summer dilution lime-sulphur may be required. In these 

 arsenate of lead may be omitted unless caterpillars or other 

 leaf eating insects are present. 

 H. August spray for brown-tail moth caterpillars. Arsenate of lead 

 applied just as the eggs are hatching. This is the most impor- 

 tant spray for this pest and if thoroughly applied precludes 

 the necessity of other treatment for this insect. This will com- 

 bat also tussock caterpillars, fall web-worm, red-humped cater- 

 pillars, yellow-necked caterpillars, and caterpillars of the tiger 

 moths. 



In Nova Scotia where conditions are similar to those in Maine 

 Britton and Sanders (Spray Calendar for Nova Scotia Apple 

 Orchards for 1916) have recommended an additional early 

 summer dilution of lime-sulphur application combined with 

 arsenate of lead "when leaves about blossom clusters are show- 

 ing green. For canker-worm defer this spray for a few days." 

 To combat bud-moth, brown-tail moth, tent-caterpillar, canker- 

 worm and apple scab. If aphids are present add Blackleaf 40 

 Yz pint to 50 gallons of water. 



Culture. 



If the curculio and the apple maggot are present practice 

 clean cultivation, beginning in June if the curculio is present. 

 Cultivation also destroys the moths which pass their pupal stage 

 in the ground. 



Gathering Windfalls. 



As both the larva of the curculio and of the maggot are found 

 in the small apples and later leave these to pupate in the earth, 

 it is highly important to rake up frequently all windfalls and 

 destroy them. This means not only the larger apples but even 

 those which are no larger than a pea. Where sheep or hogs 



