37 
Considering all the analyses together, it will be seen that the ash 
of these plants grown on calcareous soils differs from the ash of plants 
grown on noncalcareous soils chiefly in containing a larger amount of 
lime and a smaller amount of iron.! 
While there were no differences between the chlorotic and green 
plants reported in the table it should be borne in mind that the green 
j plants were exceptional in that they resisted the chlorosis longer than 
the average plant, also, that while these plants were green, they were 
not normally developed and that this class of plants eventually 
became chlorotic (p. 36). 
To see whether the large amount of lime in the ash is the sole cause 
of the chlorosis analyses were made of plants which were grown on 
noncalcareous soils that had received a heavy application of lime. 
The plants were grown on small plats of a clay loam soil, 40 plants to 
the plat. The check plat received no lime; the second plat, lime at 
the rate of 3,400 pounds of calcium oxid per acre in the form of 
burnt lime; and the third plat, the same amount of calcium oxid per 
acre but applied in the form of gypsum and burnt lime together. 
The growth of the plants in the limed plats was depressed, but none 
of the plants ever showed chlorosis. The plants were 16 months old 
when analyzed. In the following table are given the analyses of 
plants from each of the three plats: 
Analyses of the ash of plants grown on noncalcareous soils which had received heavy 
applications of lime. 














° ‘Analysis of carbon-tree ash. Ash tp cueiorcs i oe substance of 
af] Me . 7 
Quantity of lime ag 4 ele S| sae. os ke aah Sey ies = 
er acre added b een |Mpies | ek = Sg | eMedia ac he lrsyaal Nes 
ie soil. + 3 8 S oO of | Se es oo o2|M 12 = 
i io) Ay VY o Dera iS) aw| vy o 5 
o 3 = aw} ae] g & as — Abo aC! og & oo 
a, 6 o | we | & 4 oo =a De Ws >i | Sed lat 
a, me Peas Dae fees: Pa aoe ee | S bees 
< be fi gectac linet wilt Sl Gah ei 25 [Pm = eam =f War = a 
P.ct.| P.ct.| P.ct.| P.ct.| P.ct.| P.ct.| P.ct.| P.ct.|P.ct.| P.ct.|P.ct.|P. ct. 
INQUG: <.\3<-54-0%% Green. 268} 12.00) 19.40) 5.96) 53.04) 7.36} 3.19] 0.38] 0.62) 0.19) 1.69) 0.24) 0.93 
3,400 lbs. CaO 
from CaO..... ee OOoe 267| 22.32) 25.25) 5.99) 25.68) 6.33] 2.78 - 62 SAOl) Rap eA a Oh, ee 
3,400 lbs. CaO 
from CaO and 
CaSOx ee. 23 2 .--do...| 266} 27.60] 20.79) 6.53) 27.33] 2.82) 3.23] .89| .67/ .21] .88 .09) .92 



It will be seen that the plants grown on the soils to which lime was 
applied contained more lime in the ash and dried substance than the 
check plant and less potash and iron. While the content of iron in 
the plants grown on the limed plats is much less than that of the 
check plant it is nevertheless much greater than that of the plants 
reported in the preceding table (p. 36). The nitrogen is practically 
the same in all three plants. 

1 The analyses in the above table show a higher percentage of lime and a lower percentage of iron than 
any of the analyses reported by J. C. Briinnich. Queensland Dept. Agr. Rpt. 1903-4, p. 76, 
[Bull. 11] 
