436 



Journal of Agricultural Research voi. xxn.No. 8 



Table II. — Percentage of ash in awns, rachises, atid kernels of eight varieties of barley 

 grown at Chico, Calif., and sampled on lo different dates 



PERCENTAGE OF ASH IN AWNS 



C.I. 



No. 



Variety. 



June 



6. 



June 



June 



June 



i6. 



June 



Jime 



2S. 



June 



27. 



June 



30. 



July 



7- 



July 

 14. 



531 

 234 

 257 



916 

 261 



19s 

 690 

 652 



Hannchen 

 Nepal ' . . 

 Tennessee 

 Winter. 

 Odessa. .. 

 Mariout. . 

 Smyrna. . 

 Coast,. 

 Poda 



36.7 

 16.6 



29. I 

 34-3 

 34- I 

 32.0 



31- 9 

 27-3 



36. 



34-4 



31.8 



35- 5 34- 6 



32. I 

 35-6 

 34-5 

 35-5 

 26.6 

 28.4 



33-2 

 34-6 

 36.7 

 29-5 

 32.8 

 31.0 



31-5 

 16. 4 



34-1 

 36. I 



33- S 

 32-7 

 32-5 

 32-4 



33-2 

 13.8 



35- 3 

 37-4 

 32.6 



29- 5 

 32.2 



33-4 



32.8 

 15-5 



34-3 

 37-2 

 34- o 

 31. 2 

 31-7 

 32.5 



35-8 

 16.3 



PERCENTAGE OP ASH IN RACHISES 



531 



234 

 257 



916 

 261 



195 

 690 

 652 



Hannchen 

 Nepal ... 

 Tennessee 

 Winter 

 Odessa. . 

 Mariout. 

 Smyrna. 

 Coast. .. . 

 Poda 



7.8 

 7-7 

 5-4 

 5-4 



II. 7 



9.6 



8-5 

 7.6 

 8.2 

 S-o 

 S-4 



10. 7 



9.» 



7-5 

 9. I 

 6.8 

 6.2 

 5-7 



9-5 



9-5 



9.8 



8-5 

 7-1 

 6.8 

 5-8 



10. o 

 9.9 



».9 



8.7 

 7.8 



7-7 

 6.4 

 6.0 



II. 4 

 10. 5 



8.3 

 9.6 

 8.6 

 6.8 

 6.9 

 6.0 



"•S 



». o 

 8.4 

 7.8 

 6.0 

 6.1 



PERCENTAGE OF ASH IN KERNELS 



531 



234 

 257 



916 

 261 



195 



690 



652 



Hannchen 

 Nepal ^ . . 

 Tennessee 

 Winter 

 Odessa. . 

 Mariout . 

 Smyrna . 

 Coast. .. . 

 Poda. . . . 



3-3 

 1,8 



3-2 

 3-6 



3-0 

 2.7 



30 

 2.8 



3-4 

 3-6 



31 

 2.7 



3-2 

 2.9 



3-6 



3-5 

 3-4 

 2.9 



3-1 

 3-0 

 2.8 



3-4 



3-1 

 3-4 

 3-2 

 2.8 



2.9 



3-4 



3-5 



3-2 

 3-6 

 3-2 

 3-8 

 2.9 

 2.9 



3-3 

 1.9 



2.8 



3-1 



3-6 



1.8 



3-3 

 2. I 



3-6 



3-1 

 2.8 



3-5 

 2.8 



3-4 

 2.0 



3-0 

 3-6 



3-1 

 31 



2.9 



1 Hoods. 



' Naked kernels. 



Since the studies on irrigation were not carried beyond the stage of 

 actual maturity, there was some question as to whether the awn had 

 ceased to accumulate ash when the studies were terminated. It was 

 impossible to carry these particular samples further, as this was a study 

 of kernel growth and the paleas could not be stripped from the kernels 

 after mechanical loss of water had commenced. In order to determine 

 whether there was a later transfer of ash a series of varieties was allowed 

 to stand in the field for six weeks after maturity, at Chico, Calif. Samples 

 were taken, commencing at about the stage where they were discontinued 

 at Aberdeen. These results are reported in Table II. It will be seen 

 that there was very little change of ash content after the growth of the 



