46 



FARM FRIENDS AND FARM FOES 



probably is the explanation of its presence in many grain 

 fields, in which no Chess seed developed the previous 

 season. 



Chess is a winter annual, and its slender seeds are some- 

 what similar to oats, although they are darker in color, and 

 the grain is of smaller size. These seeds are likely to be 

 found in pheap qualities of clover, oats, and wheat seed. 



Mixture of weed seeds commonly found in low-grade alsike clover seed : a, alsike 

 clover; i, white clover; c, red clover; d, yellow trefoil; e, Canada thistle; 

 f, dock ; ^, sorrel ; k, buckhom ; «", rat-^tail plantain ; k, lamb's-quarters ; /, shep- 

 herd's purse; OT, mayweed; «, scentless camomile ; ^, white campion ; ^, night- 

 flowering catch-fly ; q, oxeye daisy ; r, small-ii-uited false flax ; j, cinquefoil ; 

 t, two kinds of peppergrass ; a, catnip ; v, timothy ; x, chickweed ; y, Canada 

 bluegrass ; z, clover dodder ; /, mouse-ear chickweed ; a, knot-grass ; j, tum- 

 bling amaranth ; ^, rqugh amaranth ; j, heal-all ; 6, lady's thumb. (Enlarged.) 



although, as in the case of many other pernicious plants, 

 the -public inspection of seeds is driving these poorer qual- 

 ities out of the market. When a field is infested with 

 Chess, it may well be planted to a hoed crop for two or 

 three seasons. This procedure, and the sowing of pure 

 seed, will prove an adequate preventive. 



