A UNIT IN AGRICULTURE 15 



12. Corn and corn products: importance, use and value. 

 Literature. 



The Nebraska Corn Book. 



Farm Science, pp. 21-39. 



Farmers' Bulletins, Nos. 199, 229, 253, 298, 303, 313. 



Bureau of Entomology, Circular No. 59. 



Office of Experiment Station, Circular No. 34 (rev.). 



Year Book, Reprints 446 (1907), 488 (1908). 



Bowman and Crossley, Corn. 



II. Wheat. 



1. Study of a grain of wheat. Ex. 7. 



2. Study of a head of wheat. Ex. 8. 



3. Study of a complete plant. Ex. 9. 



4. Principal varieties. 



5. Improving of wheat. 



(a) Crossing. 



(b) Selection of seed. 



(c) Selection of individual plants. 



6. Methods of cultivation. 



(a) Relation of climate to wheat production. 



(b) Plowing for wheat: time, depth. 



(c) Preparation of ground after breaking. 



(d) Sowing: broadcast, drill; amount of seed per acre. 



7. Harvesting and marketing wheat. 



8. Wheat and wheat products: importance and value. 



9. Enemies of wheat and how to fight them : 



(a) Eust. 



(b) Hessian fly. 



(c) Chinch bug. 



(d) Smut. 

 Literature. 



Farmers' Bulletins, Nos. 132, 250. 



