222 



SMALL GRAINS 



Digestible Nutrients and Fertilizing Values of Grain Crops Continued. 



FIELD AND LABORATORY EXERCISES 



1. Withstanding the Winter. In regions where several kinds of winter 

 grains are sown in the fall, compare the different varieties or kinds of grain 

 with respect to climate-endurance. Which are injured during heaving by 

 frost? Which produce the best winter pasturage? What relation exists be- 

 tween the date of sowing and the value as pasturage? 



2. Fighting Hessian Fly. In regions where Hessian fly is sometimes in- 

 jurious, compare the damage done on different fields under early and late 

 sowing of the fall crop. Observe the damage where cleaning up of hedge-rows 

 and fence-rows is practiced, and where volunteer grain is kept down until 

 late planting time. Compare these with other fields where such methods are 

 not practiced. 



3. Varieties of Barley. Collect samples of different types of barley, and 

 make laboratory studies of these. 



4. Samples of different varieties of wheat and oats should be collected in 

 the ripe stage of unthrashed grain, and also get thrashed grain samples. Note 

 the differences in color of grain, forms of head, proportion of grain to weight 

 of the grain and straw. 



