152 



FIELD CROPS 



avoid the damage of storms, which are usually more severe 

 in the latter part of the growing season. 



191. Harrowing. Harrowing grain after it is up is not a 

 common practice, though it sometimes gives very good 

 results. Spring wheat is sometimes harrowed after it is up, 



Fig. 50. Cutting wheat with binders on a North Dakota farm. Note the 

 rape in the wheat stubble in the foreground. After harvest, sheep are turned 

 into the field to pasture on the rape and the gleanings. 



especially if there is a tendency for a crust to form on top of 

 the soil. Harrowing breaks up this crust by forming a slight 

 dust mulch, which aids in checking the evaporation of mois- 

 ture and also aids in destroying weeds. Some- of the grain is 



