structor can arrange that a part of the work can be given in the biology course. 



He must, however, have a working knowledge of the terminology of 

 plant diseases and insects. A special study of insects and diseases by the 

 instructor is worth while because a large proportion of questions asked by 

 farmers deals with these subjects. 



The student must know enough terms so that he can understand (1) 

 the life cycle, (2) the description (so that identification is possible), and (3) 

 control measures for the most common diseases. Which diseases shall be 

 studied, is for the most part a local problem. 



The following references will be found useful: 



Cook, M. T., Applied Economic Botany (LTPPINCOTT). 



Percival, J., 1915, Agricultural Botany (Holt), Chapters 46 and 47. 



Duggar, B. M., Fungous Diseases of Plants (Ginn). 



The students should understand the terminology of entomology well 

 enough to learn the life cycle, description and control of the important crop 

 insects. Useful references are: 



Washburn, F. R., Injurious Insects and Useful Birds (LIPPINCOTT). 



Sanderson, E. D., and Peairs, L. M. School Entomology (Wiley). 



Directions for Collection and Preservation of Insects, U. S. National 

 Museum, Bui. 67. 



Plant Physiology. It is best to arrange for the student to get his plant 

 physiology in his botany course previous to studying farm crops. Where this 

 is not possible the suggested plan is that a series of demonstrations be pre- 

 pared by the instructor and given at the beginning or end of the first seven or 

 eight recitations. The students may be required to make note of each demon- 

 stration according to a regular outline. 



By this method the student should get the necessary principles of plant 

 physiology. The average student lacks skill in setting up well the necessary 

 apparatus to demonstrate these things for himself in the laboratory and the 

 returns for time spent are small. 



Material. A large and varied supply of plant and seed specimens is 

 essential for teaching farm crops. Several supply houses can furnish this 

 material but the instructor can secure the bulk of it at no cost from farms 

 in his locality, commercial houses dealing in certain crop products, fairs and 

 other exhibits. The students can obtain many specimens from their own and 

 adjoining farms. 



Equipment. Farm crops can be taught with less equipment than most 

 other subjects and part of it can be made in the school shop. The following 

 is a suggested list for ten students: 



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