24 



TRANSLOCATION OF PLANT FOOD IN WHEAT SEEDLINGS. 



Table 8. — Dry weight and fiber of seeds, axes, and total plants when grown for 15 days in 



different nutrient solutions. 



Parts of plants and age. 



Original seed 



Seeds: 



5 days... 



9 days... 



15 days.. 

 Axes: 



5 days... 



9 days... 



15 days.. 

 Total plants: 



5 days... 



9 days . . . 



15 days.. 



Complete less potash. 



Weight of 



100. 



Grams. 

 3.50 ' 



1.650 

 .766 

 .377 



1.230 

 1.740 

 1.921 



2.880 

 2.506 

 2.298 



Fiber. 



Grams. Percent 



0.0785 



.0870 

 . 0760 

 .0700 



.215 

 .416 

 .522 



.3020 

 .4920 

 .5920 



5.3 

 9.9 

 18.6 



17.5 

 23.9 

 27.2 



10.5 

 19.6 

 25.8 



Complete less phosphoric acid. 



Weight of 

 100. 



Grams. 

 3.50 



1.74 



.675 

 .348 



1.177 

 1.833 

 2.153 



2.917 

 2.508 

 2.501 



Fiber. 



Grams. Per cent, 



0.0785 



.0840 

 .0790 

 .0780 



.433 



.648 



.2820 

 .5120 

 .7260 



2.2 



11.7 

 22.4 



16.8 

 23.6 

 30.1 



9.7 

 20.4 

 29.0 



Parts of plants and age. 



Complete less nitrate. 



Weight of 

 100. 



Fiber. 



Grams. Percent 



Complete solution. 



Weight of 

 100. 



Fiber. 



Grams. Percent. 



Original seed 



Seeds: 



5 days . . . 



9 days . . . 



15 days.. 

 Axes: 



5 days... 



9 days... 



15 days.. 

 Total plants: 



5 days . . . 



9 days... 



15 days.. 



Grams. 

 3.50 



1.710 

 .790 

 .375 



1.212 

 1.977 

 2.066 



2.922 



2.767 

 2.441 



0. 0785 



.0790 

 .0800 

 .0750 



.199 

 .368 

 .589 



.2780 

 .4480 

 .6640 



2.2 



4.6 

 10.1 

 20.0 



16.4 

 18.6 

 28.5 



9.5 

 16.2 

 27.2 



Grams. 

 3.50 



1.643 

 .621 

 .291 



1.220 

 1.945 

 2.142 



2.863 

 2.566 

 2.433 



0.0785 



.0830 

 .0700 



.2320 

 .3680 

 .6070 



.3200 

 .4510 

 .6770 



2.2 



5.4 

 13.0 

 24.0 



19.0 

 18.9 

 28.3 



11.2 

 17.5 

 27.8 



Table 9. — Per cent of fiber in axes based on amount in original seed. 





Control 



solu- 

 tion. 



Potash 

 solu- 

 tion. 



Phos- 

 phoric 

 acid so- 

 lution. 



Control 

 solu- 

 tion. 



Nitro- 

 gen so- 

 lution. 



Com- 

 plete 

 nutri- 

 ent so- 

 lution. 



Tap 



water. 



Complete nutrient . 

 solution- 



Com- 

 plete 

 nutri- 

 ent so- 

 lution. 



Age. 



Less 

 potash. 



Less 

 phos- 

 phoric 

 acid. 



Less 

 nitro- 

 gen. 



Plants: 



5 days.. 



7 days.. 



9 days . . 



12 days. 



15 days. 

 Seeds: 



5 days.. 



7 days.. 



9 days.. 



12 days. 



15 days. 



210 

 300 

 395 

 440 

 510 



113 

 82 

 95 

 94 

 93 



195 

 330 

 370 

 490 

 605 



105 

 89 

 93 



106 

 96 



225 

 380 

 520 

 550 

 645 



97 

 94 

 96 

 95 

 94 



200 

 295 

 400 

 385 

 480 



114 

 103 

 112 



77 

 •97 



180 

 260 

 400 

 485 

 640 



111 

 112 

 112 



84 

 86 



230 

 335 



470 



595 



1595 



111 

 106 

 97 

 84 



87 



210 

 300 

 400 

 520 

 570 



94 

 102 

 87 

 95 

 95 



275 



255 



255 



295 



530 







550 



. 470 



470 



665 

 111 



825 

 107 



735 

 101 



710 

 112 



97 



101 



102 



106 



89 



99 



96 



89 



12 days. 



