10 Control of the QreenJtouse White Fly 



« 



and beans no migration of the larvae from the dead leaves to the living 

 plants occurred. When eggs were hatching in numbers on the unsuitable 

 foot plant Lmnium, and it was particularly desired to preserve the larvae, 

 an Urtica was planted by the side of the former and the leaves of the 

 two were stitched together. No larvae passed from the unsuitable to 



" ^ S) ?:■ - .. >■ ^ ^ ^ >■>■. 



..S <^ o 



S is >■. <^ O 10 — TC o t^ t- 



aj _2 ^ '» Ci t^ CO ' )^ ' CO -^ 00 



tJ'^!3<^'|^^l^5^o cm CM<Nr-i 



fcc 2 



-1 >H 



