25- 



Figure 1. Trends in Pesticide Usage and Insect Injury to Fruit, 1977-1981. 



•77 



Insecticide Usage 

 IPM« — — « 



// of blocks ( ) 

 X= 8.98 



b. Miticide Usage 



IPK« • 



'78 '79 '80 

 @ 30% reduction 



'81 



'78 '79 '80 '81 

 @ 60% reduction 





c 



0) 

 u 

 u 

 w 



Pu 



Total Insect Injury to 

 Fruit at Harvest 



3.91 



w 



•H 



a 

 < 



E 

 O 



1-1 



D 

 •I—) 



C 

 M 





,2 -■ 



,16 



.12 



.08 



.OA ,. 

 '78^ 



Aphid Injury to Fruit at 

 Fiarvest 



IPM( 



CHECK© O 



'79 



'80 



