75 



Table 10. Calculated minimal number of snails necessary to clean 

 an entire citrus tree per unit time. 



Age of Tree (Years) Days to Completion 

 (a) (T) 



Number of Snails 

 (N) 



10 

 10 

 15 

 15 



20 

 20 

 25 

 25 

 30 

 30 



15 

 30 

 15 

 30 

 15 

 30 

 15 

 30 

 15 

 30 



64 

 32 

 98 

 49 



134 

 67 



168 

 84 



206 



103 



For the above calculations the following averages were 

 derived from the field data. 



S = S = 131.34 cm^ 



h - F= 5 hours per night 



