82 



representative sample of the mite population on that fruit. To gain 

 a better understanding of this population an experiment was conducted. 

 This study examined the distribution of the citrus rust mite on both 

 the tree and on the fruit. 

 Materials and Methods 



P^. ol ievora was studied for population distribution patterns 

 on both fruit and tree quadrants at Orange Lake, Florida. All tests 

 were on Valencia variety C^. sinensis with east-west row orientation. 



Four blocks with two trees per block were monitored. One 

 tree per block was treated with water at 200 p.s.i. to run off while 

 the second tree was left untreated. Counts were made pretreatment 

 (day of application), and at one week intervals for six weeks. 



Method of counting . Four fruit were chosen to represent each 

 of the four major compass directions. Citrus rust mite counts were 

 taken as in Chapter II, Section!, along the equatorial belt (a 



plane through the fruit parallel to the ground) on each of the 



2 

 four major compass directions. This gave a total of 16-1 cm 



samples/tree. 



Results and Discussion 



Initial efforts to analyze the data employed the use of an analysis 

 of variance (ANOVA) (Table 13) and tested for the various interactions. 

 There was no significant difference between the blocks and treat- 

 ments for the trees tested, permitting summation of data of the two 

 treatments (Tables 14-19). The significant difference displayed 



