4*2 SPRAYING THE APPLE ORCHARD. 



DeMeritt at Durham, N. H., the past year, confirming those 

 of Dr. H. H. Lamson, given in former publications of this 

 station. The plots consisted of five trees each and the num- 

 ber of spotted and unspotted apples on the trees at the tim'e 

 of gathering was determined by actual count. The Bor- 

 deaux mixture was made with five pounds each of lime and 

 copper sulfate to fifty gallons. The ''KLBP" was sim- 

 ilar Bordeaux mixture with kerosene-limoid, as recom- 

 mended by the Delaware Agricultural Experiment Station, 

 containing 15% of kerosene. 



From the above it is evident that spraying just after tlie 

 petals fall and again three weeks later will prevent the spot 

 on 60% of the fruit. Probably another spraying ten days 

 later, or about July 1, with that of June 8 and 21 would 

 have been the best for its control, and spraying at those 

 times will be tested next season. In any event the benefit 

 from spraying merely in reducing this disease is sufficient 

 to warrant its cost, without considering the profit derived 

 from controlling the codling moth. 



HOW TO SPRAY. 



Apparatus.^ — TJie Funip. For the average New Hamp- 

 shire orchard and farm a good barrel pump is the best 

 type. The small compressed air, knapsack, and bucket 

 sprayers are good for garden work, but do not furnish suf- 

 ficient pressure for large trees. Numerous requests come 



