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POMOLOGICAL PARAGRAPH 



Leaf analysis program : Grower participation in our leaf analysis 

 program in 1973 was disappointing in comparison to 1972. Leaf anal- 

 ysis of established fruit plants provides the most reliable informa- 

 tion of nutrient needs. It can determine nutrient shortages and ex- 

 cesses, and shows nutrient balance. Frequently, leaf analysis shows 

 that certain fertilizer elements are not needed, which saves you 

 money. One grower, for example, has not applied nitrogen (N) on 

 some blocks of Mcintosh trees for 4 years and leaf analysis in 1973 

 showed the N level in his orchard still to be somewhat high. Many 

 growers are concerned about calcium (Ca) levels in their apple trees. 

 Other nutrients must be kept in balance with the Ca for apple trees 

 to utilize Ca efficiently. Leaf analysis is the only means by which 

 we can determine the level and balance of the essential elements. 

 Therefore, we strongly urge greater participation in our 1974 leaf 

 analysis program. It could make and/or save you money! 



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SAT - THE SINGLE APPLICATION TREATMENT WITH DIFOLATAN FOR 

 EARLY SEASON APPLE SCAB CONTROL 



C.J. Gilgut 

 Department of Plant Pathology 



One spray for scab at the beginning of the growing season which 

 controls scab up to petal fall without additional scab sprays ap- 

 peals to growers. It can be a "peace-of -mind" program. 



SAT has given good scab control for several years in experi- 

 ments. But, it is a new method and, as with any new method or new 

 pesticide, we need to learn how it will work for growers in their 

 orchards when applied with different spray equipment, during differ- 

 ent seasons, and with different weather conditions. Some growers 

 have already tried the method. Those who followed directions care- 

 fully got good scab control; others who were careless, made mistakes, 

 or tried short cuts, got poor control. 



A review of the SAT method should help grov;ers understand it 

 and get better results, and an account of some of the reasons for 

 poor results may help avoid them in the future. 



The SAT Method : A heavy dosage of fungicide is sprayed on the 

 trees at Dormant to 1/4 Inch Green Tip. Enough fungicide is depos- 

 ited on buds , twigs and branches for distribution during rains in 

 sufficient amounts to protect new growth for about four weeks dur- 

 ing the early part of the season, usually up to Petal Fall. 



