

1920] 



WA LSTER—BARLE Y 



"3 



by evaporating almost to dryness on the steam bath and then 

 taking down to constant weight in a vacuum desiccator. 



TABLE IV 



» 



OF TEMPERATURE UPON AMOUNT AND PERCENTAGE OF DRY MATTER AND 



WATER IX BARLEY LEAVES 



Culture no. and treatment 



44- 



24. 



41. 

 108. 



87. 

 104. 



Green 

 weight 



(gm.) 



warm 



High N warm 

 High N warm 

 High P and N 



High N cool 



High N cool 



High P and N cool. 



\ 



9295 

 88.23 



96.87 



69. 20 



65.68 



/i 37 



Dry weight 

 (gm.) 



12 

 12 



II 

 IO 

 IO 

 II 



67 

 79 



IO 



92 



23 

 04 





Weight of 



water (gm.) 



80. 



.28 



75 



44 



85. 



77 



58. 



,28 



55- 



45 



60 



23 



Percentage 

 of water 



86.36 



85-50 



89.47 

 84.21 



84.42 

 84-39 



Percentage 

 of dry- 

 matter 



13 

 14 



10 



15 

 15 

 15 



64 



5° 



53 



79 

 58 

 61 



Material insoluble in ether, alcohol, and water was designated 

 as fraction 3 (F 3 ) . This entire fraction was dried to constant weight 





Fig. 10. — Influence of supplementary P fertilization on heavy N fertilization: 

 all cultures received equal heavy doses of N in form of NaNOjj cultures nos. 41 and 

 104 received equal dosage of extra P; nos. 41 and 44 grown in warm house; nos. 104 

 and 108 in cool house; P failed to counteract effects of N at higher temperature; 

 chemical analyses made of leaves from this set of cultures. 



at ioo° C. in an electrically heated oven. Table IV gives the 

 relative proportions of moisture and dry matter in the several 

 samples analyzed. 



