barley: practicums 



343 



7. Character of endosperm: mealy . . , per cent; half mealy . . per 



cent ; glassy . . . per cent. 



8. Character ©f endosperm : opaque . . . percent; half opaque . . . per 



cent ; translucent . . . per cent. 



9. Plumpness : plump ; medium ; shrunken. 



10. Length of grain : ten grains . . . 



11. Width of grain : ten grains . 



12. Thickness of grain : ten grains . . . 



13. Germination: place 100 grains between 



well moistened filter paper or flannel 

 cloth, and keep at temperature of 

 80^ F. Remove sprouted grains at 

 end of each twenty-four hours for 

 five days; first day . . .; second 

 . . .; third . . .; fourth . . .; 

 fifth . . . 



477. Soil Fertility in Relation to 

 Barley. — Barley is well adapted for pot cul- 

 ture. (432) Where practicable, require each 

 student to apply the following fertilizing 



ingredients in the rates per acre indicated _ 



ui -D • *.u i.ji.i. iii.il- ^^^° germinatingr apparatus used by the 



below. Require the student to calculate the ,. .fjc-.x % . . ^ . . 



. , ... . , , , United States Department of Agncu'- 



amount of fertilizers required per plat from 



such commercial goods as may be available in 

 his market. Also require the student to show 

 the method of calculating yields from check 

 plats. See Ohio BuL 13S, p. 40. Make each 

 plat four to eight rods long and the width of 

 one round of the wheat drill. Leave three 

 feet between each plat, and keep this space 

 cultivated so as to prevent growth of weeds. Outer drill row may be cut by hand 

 and discarded in order to get yields similar to those obtained in ordinary prac- 

 tice. ^^^lere practicable, each student should be required to carry this trial 

 through from start to finish, calculating fertiHzers required, mixing materials 

 from raw goods, applying fertilizers, so\nng barley (wheat or oats may be sub- 

 stituted), harvesting crops and calculating yields. Reasons for each of the steps 

 taken should be emphasized. 



Place upon the plats commercial fertilizers in quantities equivalent to pounds of 

 elements indicated: 



ture. a, inlet pipe ; 3, outlet pipe ; c, 

 thermo-regulator ; </," guide light" 

 gas delivery tube ; g, " guide light " ; 

 y, opening into water cavity ; ^.nnaxi- 

 mum and minimum thermometer; /i, 

 thermometer; t, germinating pan; kk 

 outlets for carbon dioxide. (Yearbook 

 1894, p. 402.) 



None. 



Phosphorus, 25. 



Potassium, 25. 



None. 



Nitrogen, 25. 



Phosphorus, 25 ; nitrogen, 2v 



