74 FORAGE CROPS. 



sidered preferable to have the grain fall before the 

 tubes of the grain drill, that the seed may thus be 

 provided with a covering. 



Whether the harrow or the roller, or both, shall 

 be used in covering the seed is a question entirely 

 dependent on conditions. On prairie soils and in 

 localities where dry weather is prone to come early 

 in the season, the seed should be covered deeply, but 

 on clay soils it should be covered less deeply. When 

 sown on lands which carry a crop of winter wheat 

 or winter rye, the harrow should always be used to 

 cover the seed if the soil has dried enough to admit 

 of so doing. When the seed drops before the drill 

 tubes, with clay soils the covering furnished by the 

 grain tubes which follow will be ample, but on loose 

 or light soils it may still be necessary to follow the 

 drill with the harrow. And in a dry seed time 

 great good would almost certainly result from fol- 

 lowing the seed drill with the roller, and the roller 

 with the harrow. The roller would impact the land 

 and the harrow would lessen the tendency to evapo- 

 ration in the soil, and also the tendency to be lifted 

 by the winds. In the states and provinces east of the 

 upper Mississippi basin, when clover is broadcasted 

 on land that has been sown with some spring cereal 

 the roller alone will provide an ample covering for 

 the clover seed. 



Cultivation. Medium red clover does not, of 

 course, require any cultivation after it has been 

 sown. But there may be instances in which the har- 

 row may be used as an aid to the re-seeding of pas- 

 ture lands, when it is not considered desirable to 

 plow them up. If the clover on these has not 

 been cropped too closely many clover heads will 



