SPRAY MANAGEMENT 



NUMBER OF ORCHARDS 

 12 

 10 



8 



6 



4 



2 







2 



4 



6 



8 



PER CENT OF ORCHARDS 



f, 



CONTROL 



VERY GOOD 



GOOD 



UNSATISFACTORY 



UNDER 20 



OVER 40 



20-40 

 GALLONS OF SPRAY 



Figure 6. — Control ratings of 40 orchards applying varying 

 amounts of spray per season 



20 applied between 20 and 40 gallons and nine used more than 40 gallons. 

 (Figure 6.) Fifty-five per cent of those who applied less than 20 gal- 

 lons and 40 per cent of those who applied between 20 and 40 gallons ob- 

 tained unsatisfactory control. While a higher percentage of those using 

 small applications failed to get satisfactory control, a few operators in 

 this group obtained good results. The amount of spray used and the 



NUMBER OF ORCHARDS 



PER CENT OF ORCHARDS 



|. 



CONTROL 



VERY GOOD 



GOOD 



UNSATISFACTORY 



5 AND UNDER 



6-10 



OVER 10 



GALLONS OF CALYX SPRAY 



Figure 7. — Control ratings of 40 orchards applying varying amounts 



of calyx spray per season 



