BED CLOVER 



401 



TABLE SHOWING THE ACREAGE OF CLOVERS IN THE EASTERN 

 PART OF THE UNITED STATES IN 1899 AND 1909 



In Illinois the acreage in 1899 was 362,044, while in 

 1909 it was 427,957, an increase of over 18 per cent. 



473. Insects. There are five insects which cause rather 

 serious damage to red clover, one of them attacking the 

 root, one the foliage, one the hay, one the flower and one 

 the seed. 



The clover root-borer (Hylastinus obscurus). The 

 clover root-borer is easily recognized from the fact that 

 its larva burrows in the root, thus greatly injuring and 

 sometimes killing the plant. The damage is nearly al- 

 ways done in plants the second season, after the roots have 

 attained a considerable size. The only remedy suggested 



2D 



