24O THE FORAGE AND FIBER CROPS IN AMERICA 



Practicum 



294. FIELD BEANS. 1. Seed Study: Make drawings showing the general 

 shape, hilum = point of attachment, micropyle = point at the free end of the 

 radicle or caulicle, raphe ridge from opposite end of the hilum to end of 

 the seed. 



Divide the bean into its two cotyledons and make drawings showing the 

 testa seed coat, the tegumen = body of cotyledons, the plantlet, pointing 

 out the radicle = free and pointed end of the plantlet, node = point of at- 

 tachment of the cotyledon, first pair of leaves, internode. 



2. Seedling: Make drawings and note upon them if there are any roots, 

 changes in the plumule, change in seed coat, consistency of tegumen, length 

 of radicle. 



3. Plant, if bush bean: runners present, absent; growth rank, slight; growth 

 upright, spreading; many-stemmed, few-stemmed; short-stemmed, long-stemmed; 

 pods on runners, pods in center of plant; pods few, many. 



4. Pods: length in.; average number of beans ; symmetri- 

 cal, asymmetrical; straight, curved, twisted; depression between beans slight, 

 marked; pods well filled, not well filled; beans crowded, not crowded; section 

 large, small; flat, oval; back creased, not creased; surface rough, smooth; 

 healthy, diseased. 



5. Seed Inspection: Count 100 beans and weigh them. Average weight 



of individual ; average length ; average width ; 



average thickness ; ratio of width to length ; ratio of 



length to thickness ; ratio of width to thickness 



6. Shape of bean: kidney-shaped, symmetrical; cross-section oval, flat, 

 round. 



7. Color: mottled, splashed, striped; if uniform, white, black, brown, red; 

 eye yellow, black, not colored. 



295. COLLATERAL READING. B. W. Jones: The Peanut Plant. New York: 

 Orange Judd Co., 1902. 



W. N. Roper: Peanut and its Culture. Petersburg, Va.: American Nut 

 Journal, 1905. 



H. C. Irish: Garden Beans Cultivated as Esculents. In Missouri Bot. 

 Garden Report 1901, pp. 81-8. 



T. E. Browne: Peanut Culture. In The Bulletin, North Carolina Dept. 

 Agr. (October, 1906), pp. 23-7 



R. B. Handy: Peanuts: Calture and Uses. U. S. Dept. Agr., Farmers' Bui. 

 No. 25, 1895. 



Thomas Shaw: Canadian Field Peas. U. S. Dept. Agr., Farmers' Bui. No. 

 224, 1905. 



Mary Hinman Abel: Beans, Peas, and other Legumes as Food. U. S. Dept. 

 Agr., Farmers' Bui. No. 121, 1900. 



C. A. Zavitz and Wm. Lochhead: Peas and the Pea Weevil. Ontario Agr. 

 Col. Bui. No. 126, 1903. 



J. M. Van Hook: Blight and Mildew of the Field and Garden Peas. Ohio 

 Station Bui. No. 173, 1906. 



