Orchards which have not had adequate iiine or have a history of nagnesium 

 deficiency will benefit from sprays containing magnesium in the form of epsom 

 salts. Two or three sprays of epsom salts at 20 pounds to the 100 gallons 

 will provide good insurance against magnesixjm deficiency. 



Unless the grower is certain that urea or epsom salts are compatible with 

 the insecticides and fungicides used in his spray program he should not include 

 urea and/or epsom salts in his regular spray mixtures. To be on the safe side 

 all nutrient element sprays should be applied as separate applications. 



W. D. VJeeks 



I I I I I I I I I I I I I I I I 



AIR-BLAST SPRAYERS 



The annual Sprayer Demonstration sponsored by the Worcester and Middlesex 

 County Extension Services was of great value to growers in attendance. The 

 trouble-shooting session was of particular value in that nozzling of air-blast 

 sprayers was discussed. In addition, the sales representatives of the various 

 sprayer manufacturers discussed the main reasons why some growers are not getting 

 satisfactory performance with their air-blast machines. The representatives of 

 the sprayer manufacturers stressed that any grower not satisfied with his sprayer 

 performance should not hesitate contacting the local sprayer dealer. 



The following material pertaining to operation of air-blast sprayers was 

 discussed. 



I. Nozzling of Air-Blast Sprayers. 



First Step: Determine Ground Speed 



A. A speedometer is very desirable'. 



B. The speed of travel to which most machines are best adapted is from \\ to 

 2 miles per hour. 



C. If the tractor has no speedometer, the table immediately below gives the 

 equivalent rate in feet per minute and the number of trees which would 

 be passed by. 



NO. TREES SPRAYED PER MINUTE AT V/^JIIOUS RATES OF TRAVEL 



