HARMFUL EFFECTS OF ALDEHYDES IN SOILS. 9 



Table V. — Effect of salicylic aldehyde on wheat in nutrient culture solutions composed 



principally of nitrate. 









With 







With 



Composition of culture 

 solution. 



Without 

 salicylic 

 aldehyde. 



salicylic 



aldehyde, 



10 parts 



per 



Composition of culture 

 solution. 



Without 

 salicylic 

 aldehyde. 



salicylic 



aldehyde , 



10 parts 



per 

 million. 









million. 







P2O5 



NH 3 



K 2 



Green 



. weight. 



Green 



weight. 



P2O5 



NH 3 



K 2 



Green 



weight. 



Green 

 weight. 



Parts per 



Parts per 



Parts per 







Parts per 



Parts per 



Parts per 







million. 



million. 



million. 



Grams. 



Grams. 



million. 



million. 



million. 



Grams. 



Grams. 







80 







1.80 



1.31 



8 



48 



24 



3.12 



1.60 







72 



8 



2.00 



1.60 



16 



48 



16 



2.74 



1.74 



8 



72 







1.86 



1.30 



24 



48 



8 



2.34 



2.00 







64 



16 



2.00 



1.50 



32 



48 







1.80 



1.56 



8' 



64 



8 



2.50 



1.84 







40 



40 



2.50 



1.54 



16 



64 







1.76 



1.40 



8 



40 



32 



3.44 



2. 12 







.56 



24 



2.04 



1.74 



16 



1 ) 



24 



3.00 



2.10 



8 



06 



16 



3.00 



1.78 



24 



40 



16 



2.70 



2.10 



16 



56 



8 



2 24 



2.04 



32 



40 



8 



2.20 



1.88 



24 



56 







1.72 



1.54 



40 



40 







1.80 



1.60 







48 



32 



2.60 



1.82 













Table VI gives the effect of salicylic aldehyde in cultures, princi- 

 pally potassic, similar to Table IV for the phosphate cultures and 

 Table V for the nitrate cultures. 



From this table it is seen that the aldehyde cultures are much 

 smaller than the normal cultures. The total green weight of the 21 

 normal cultures was 47.67 grams against 33.74 grams for the cultures 

 containing the salicylic aldehyde. 



Table VI. — Effect of salicylic aldehyde on wheat in nutrient culture solutions composed, 



principally of potash. 



Composition of culture 

 solution. 



Without 

 salicylic 

 aldehyde. 



With 

 salicylic 

 aldehyde, 

 10 parts 



per 

 million. 



Composition of culture 

 solution. 



Without 

 salicylic 

 aldehyde. 



With 

 salicylic 

 aldehyde, 

 10 parts 



per 

 million. 



P2O5 



NH 3 



K 2 



Green 

 weight. 



Green 

 weight. 



P2O5 



NH 3 



K 2 



Green 



weight. 



Green 

 weight. 



Parts per 

 million. 

 

 

 8 

 

 8 

 16 

 

 8 

 16 

 24 

 



Parts per 



million. 







8 







16 

 8 

 



24 



16 

 8 

 



32 



Parts per 

 million. 

 80 

 72 

 72 

 64 

 64 

 64 

 56 

 56 

 56 

 56 

 48 



. Grains. 

 1.30 

 1.32- 

 1.30 

 2.20 

 2.20 

 1.46 

 2.22 

 3.00 

 2.52 

 1.60 

 2.32 



Grams. 

 0.90 

 1.48 

 1.14 

 1.42 

 1.62 

 1.18 

 1.50 

 2.24 

 1.74 

 1.10 

 1.70 i 



Parts per 



million. 



8 



16 



24 



32 







8 



16 



24 



32 



40 



Parts per 



million. 



24 



16 



8 







40 



32 



24 



16 



8 







Parts per 

 million. 

 48 

 48 

 48 

 48 

 40 

 40 

 40 

 40 

 40 

 40 



Grams. 

 3.25 

 2. 42 

 2^40 

 1.54 

 2.50 

 3.15 

 3.32 

 3.20 

 2.70 

 1.75 



Grams. 

 2.02 

 1.90 

 1.44 

 1.15 

 1.54 

 2.34 

 2.08 

 2.05 

 1.70 

 1.10 



The six cultures composed of approximately equal amounts of 

 P 2 5 , NH 3 , and K 2 is given in Table VII. The total green weight 

 of the cultures in nutrient salts without salicylic aldehyde was 18.92 

 grams, and the total green weight for the cultures of similar composi- 

 tion with 10 parts per million salicylic aldehyde was 12.37 grams. 

 43777°— Bull. 108—14 2 



