10 INSECTS AFFECTING THE ORANGE. 



make their appearance, and in May and June attain their greatest ac- 

 tivity. 



During July and August there is a marked lull in the insect world. 

 Many forms disappear, to return again in September. 



The most effective time to wage a war of extermination against insect 

 pests can only be determined satisfactorily by a special study of each case, 

 but, if a general rule be required, June and September may be indicated 

 as the months in which especial efforts should be made to rid the groves 

 of insect enemies. For fighting Scale-insects, however, the month of 

 March or April, if the season be a late one, will be found the best in all 

 the year. 



