138 CHAPTER VIII 



Insects and Other Pests. — The Cut-worm (Euxoa spp. 

 and A gratis spp.), Tuber Moth (Phthorima;a operculella Lell), 

 Millepeds and Eel-worm (Heterodera radicicola) cause con- 

 siderable damage. Thorough cultivation, rotative cropping 

 and the avoidance of soils poorly drained are preventive 

 measures. Of the larger animals, the Porcupine and Wild- 

 Boar prove serious pests in certain localities. 



POTATO REFERENCES: 



1 " The Potato."— Gilbert. 



2 U.S.A. Department of Agriculture Bulletin 176.— W. Stuart. 



* " Productive Farm Crops." — Montgomery. 



* Study of the Factors Influencing the Improvement of Potatoes." — ■ 



Illinois Bulletin 127.— East. 

 ^ Annual Reports, Department of Agriculture, O.F.S. 



* Bulletin 146, University of Nebraska. 



^ " Wart Disease of Potatoes." — Union Agricultural Journal, May, 1922. 



« " Potato Culture." — L. J. Bosman; Union Agricultural Journal, July, 

 1922. 



