362 



Journal of Agricultural Research voi. xviii, No. 7 



Tabi,E I. — Average dry v;eight of -wheat tops grown 28 days in sand cultures supplied 

 with 3-salt solutions, all having an osmotic concentration value of approximately I.JS 

 atmospheres 



Culture No. 



RiCi 

 C2 

 C3 

 C4 

 C5 

 C6 



C7 



C8 



R2C1 



C2 



C4 



CS 

 C6 



C7 



R3C1 



C2 



S3 

 C4 



Cs 

 C6 

 R4C1 

 C2 

 C3 

 C4 

 Cs 



R5CI 

 C2 



C3 



C4 



R6CI 



C2 



C3 



R7CI 



C2 



R8CI 



Average dry weights of tops (s plants). 



Series A, 10 per cent 

 moisture content. 



Absolute. 



Gm. 



3- 1734 



•4347 

 •3571 

 .4384 

 •4994 

 .4619 

 .4869 



.4851 

 .2887 



•4739 

 •5352 

 •4793 

 •5772 

 .5164 

 . 4622 



• 3330 

 .4496 



•5793 

 .4919 



•5075 

 •4371 

 •3475 

 •5256 

 .4879 



• 5615 

 •527s 

 •4095 

 .6390 

 . 6240 



• 5856 

 •4705 

 .5666 

 .5402 

 .4510 



• 5"4 



.4302 



Relative to 

 RiCi as 

 unity. 



2-55 

 2. II 



2-54 

 2.88 

 2.68 

 2.80 

 2.80 

 1.97 

 2.77 

 3.06 

 2.74 

 3-3^ 

 3- OS 

 2.66 

 1.97 

 2. 60 



3-3'^ 

 2.82 



3-4r 

 2-45 

 2. 05 

 3.06 

 2.82 

 3- 22 

 3-04 

 2-37 

 3.67 



56 

 37 

 78 

 29 



13 

 68 



2-95 

 2-53 



Series B, 15 per cent 

 moisture content. 



Absolute. 



Gm. 



o. 3211 



.5044 

 .5238 

 •5273 

 •5136 

 .5289 

 •4923 

 . 4840 



•3647 

 .5196 



.4858 

 •4750 

 .5285 

 .4654 

 .4390 

 % 4091 

 •5363 

 •5392 

 •4354 

 .4782 

 .4192 

 . 4220 



• 5623 

 .6756 



• 5931 

 •6353 

 .4687 



•8354 

 •7033 

 .6852 



•5391 

 .6645 

 . 6072 



• 6015 

 .6398 

 •5727 



Relative to 

 RiCi as 

 unity. 



I. 00 



1-57 

 1. 62 

 1.63 



I 

 I 

 I 

 I 

 I 

 I 



59 



63 



SO 



50 



15 



60 



1.49 



1.48 



I. 63 



1.44 

 1.36 

 I. 26 

 I. 63 

 1.66 



1-35 

 1.49 



I- 31 

 1.32 



1. 76 



2. 07 

 1.83 



1. 96 

 1.48 

 2.58 



2. 17 

 2.13 



1. 67 



2. 03 



1.88 

 1.87 

 I. 99 

 1.79 



Series C, 20 per cent 

 moisture content. 



Absolute. 



Gw. 



o. 3432 

 3793 

 405s 

 3754 

 4055 

 425s 

 4103 

 4088 

 ,3680 

 4350 

 3893 

 3780 

 4161 

 3630 

 3556 

 4069 



3993 

 4320 

 ,4414 

 3656 

 3336 



4303 

 4632 

 4786 

 4236 

 3804 

 ,4618 

 6001 

 5874 

 4778 

 49^5 

 4903 

 5475 



541 S 



5502 

 5213 



Relative to 

 RiCi as 

 unity. 



I. 00 

 I. 10 

 I. 20 

 1. 09 

 I. 21 

 1.23 

 I. 20 

 I. 20 

 I. 12 

 1.32 

 I. 18 

 I. 14 

 1.23 

 I. 20 

 1.03 

 I. 22 



I- 13 

 1.28 

 1.33 

 1.08 

 I. 02 

 1.30 



^•37 

 1-43 

 I. 27 



I- 15 

 1.38 

 1-75 

 1.76 



1-43 

 1.47 



J. 44 

 1.62 



1.59 

 1.62 



1-55 



Table II presents the average data of root yields corresponding to those 

 of top yields in Table I. 



