TREATMENT FOR SPECIAL WEEDS 10$ 



plowed in the spring, disked, and kept clean by harrowing 

 at least once each week during the entire season. Several 

 fields so treated have been investigated by the writer and 

 show no quack grass, but there is a loss of an entire crop. 



Small Grain and Cultivation. Inasmuch as rotations 

 of corn, oats, clover, and pasture are common in the 

 state of Iowa, and since corn is one of the most important 

 crops, it is a question how to proceed to destroy quack 

 grass under these conditions. Experience has shown 

 that quack grass spreads less frequently in a pasture crop 

 or an oats crop than it does in corn. If the field is sown 

 with oats it should be given a shallow plowing as soon 

 as the crop is removed, and harrowed at least once a 

 week during the late summer and fall. This will destroy 

 much of the quack grass by the end of the season. The 

 field can be put into corn the following year. 



Pasture. Many farmers have called attention to the 

 fact, which many of us have observed before, that quack 

 grass does not spread very rapidly in a pasture, and that 

 the roots are small and more superficial than in cultivated 

 corn or a cultivated field. 



Professor Spillman, who has taken up this question, 

 states as follows : 



"Quack grass, which is as common in many parts of 

 New England as Kentucky blue grass is in Kentucky, is 

 now spreading over a great part of the middle west. 

 . . . You may be interested in . knowing the methods 

 which are common on the heavier types of soil in Eng- 

 land for dealing with quack grass, or, as they call it, 

 'Couch' grass. In the old country a meadow is quickly 

 taken by quack grass, and when this is plowed up and 

 put in rotation the following method is used : 



"First, the sod is plowed, then it is harrowed two or 

 three times to bring the quack grass root stocks to the 

 surface, then a chain drag is run over the land to roll 

 the rootstocks up, after which wagons with hay frames 



