30 



content of this soil is .114%, the total acid radicles amounting to .198%. 



4. in cultivation for 40 to 50 years with fertilizer used during 

 5 years. The plant crop cut in 1910 amounted to only 21.3 tons. There 

 was much root disease and the roots were in very poor shape. The soil 

 was a very heavy clay. The chlorine content here was .119% (.198% total 

 acid radicles), a little higher than in 3. Both of these soils are stiff 

 clays, very different in structure from 1, 10 and 2, which are open dark 

 soils rich in humus. 



5. Here we enter a region where the chlorine content of the soil 

 is getting slight, even though there be still quite a quantity of it present 

 in the subsoil. This area, 5, had been in cultivation also for 40 to 50 

 years, and fertilizer had been used for five years. The tonnage of the 

 plant crop was 42.25 tons while that of the second ratoon of the same 

 planting was 27.00 tons. There was some root disease but the root system 

 was in good condition. The chlorine content of the soil was only 0.026% 

 (total acid radicles 0.085%), much less than at No. 4. The soil is a 

 rather heavy clay. 



11 and 6. These two locations do not materially differ from each 

 other. The land here had been in cultivation for 40 to 50 years, and had 

 been fertilized for five years. The plant crop from No. 6 gave only 22 

 tons, and the third ratoon cut in 1910 gave but 15 tons. The cane showed 

 a very small amount of root disease and a good root system. The chlorine 

 in the soil was only 0.014 to 0.017% (total acid radicles 0.071 to 0.079%.) 

 Evidently the chlorine cannot, in Ihis case, be made responsible for the 

 small production, but some other factor, possibly lack of fertility, must 

 be the cause of it. 



7. In cultivation for 40 to 50 years, but no fertilizer used. The plant 

 crop gave 37 tons, but the second ratoon crop in 1910 gave only 29.8 

 There was no root disease present and the root system was in excellent 

 condition. The chlorine was low, 0.016%, the total acid radicles 0.037%. 



8. This area had been in cultivation for about 30 years and no 

 fertilizer had ever been used. It is said to produce 60 tons of cane, but 

 actual records are not available. Some root fungus was found, but the 

 root system Avas good. The chlorine here was only 0.011% (total acid 

 radicles 0.033%). 



Tf we now compare all of the results obtained we see at once that 

 there exists a very striking relation between the salt content of the 

 soils and the general condition of the cane grown in them. Taking a 

 vigorous, healthy root system as the predominating factor in determining 

 the condition of the cane, we find that where the chlorine content is found 

 to be from 0.014 to 0.043%, and the total acid radicles from 0.033 to 

 0.142%. the cane is in good condition, and where the chlorine is above 

 0.114% (total acid radicles above 0.198%), the cane is not normal. There 

 was no salt content found between 0.142 and 0.198% of total acid radicles, 



