46 



involve a greater loss of time, and wonld not seem to have 

 any special advantage. In the case of .weeds starting from 

 perennial roots only, snch, for example, as witch grass, does 

 a period of cultivation appear to be essential. 



Use Care in purchasing Grass Seeds. 



The seeds of several of the most troublesome of the weeds 

 in our mowings are connnonlj found in commercial samples 

 of grass and clover seeds, and a great deal of care should be 

 used in the purchase of such seeds to avoid samples contain- 

 ing the seeds of troublesome weeds in any considerable 

 number. Among the weed seeds which seem to be most 

 commonly mixed with commercial samj^les of grass and clover 

 seeds are those of dock and sorrel, the yellow daisy, butter- 

 cup and plantain. Farmers may send samples of seeds to 

 the Experiment Station for examination; but it would be a 

 relatively simple matter for any farmer to collect a few seeds 

 of these commoner and more troublesome weeds, and keep 

 them for comparison with any foreign seeds which may be 

 found in grass or clover seeds purchased. In this way, by 

 the use of a magnifying glass of moderate power, the seeds 

 of any of the weeds mentioned can be identified. By the 

 exercise of care in the purchase of grass and clover seeds 

 much trouble and expense may be saved. 



The white daisy {Clirysantliciniim Leiicaniliemum) maybe 

 practically eradicated from mowings without reseeding, by 

 persistent early cutting, usually from June 12 to 15, and 

 such enrichment of the soil as favors the growth of grasses. 

 This plant is a biennial, and it is only necessary to prevent 

 the ripening of seed. 



The yellow daisy (RudhecJcia hiHa) is not ordinarily 

 troublesome save on light soils. Pulling the plants soon after 

 they come into blossom will prove efficacious. 



The wild carrot {Daucus Carota) is one of the most trou- 

 blesome weeds in mowings, and has boon allowed in many 

 localities to ripen a tremendous amount of seed, so that the 

 soil is thoroughly infested with it, and replowing will not 

 be likely to prove effective. Timely cutting to prevent the 



