100,000 

 per acre 



100,000 



per acre 



2.962.960 - 



MANURED PLOT 



2,390,570 



111,111 



13,468 20.202 m.lOI 30,303 



1, Collembola : 2, Thysamira : 3, Orthopfera ; i. Thiisannptera ; 5. Hemi}ifera ; e, Lepidoptera ; 

 7, Coleoptera ; 8, Diptera ; 9, Hymenoptera. 



Fig. 5. Number of individuals in the different orders of insects in the manured 



and control plots. 



19—2 



