60 



50 long tons per acre; this average is pulled down by old last-cat 

 that has been growing for about eight years and which was not 

 fertilized in its early period of growth. The average yield can be 

 raised to 60 tons per acre. 



By good cultivation and the use of fertilizer, the ratoon crop has 

 in some cases given more cane than the plant. Cane on some Sections 

 has been cut 7 times with good results. This means that the roots 

 have remained in the soil for at least twelve years. 4 cuts are usually 

 made. 



The highest yield of cane obtained at Cartavio, and probably in 

 Peru, was 79.8 long tons per acre from a field of about 85 acres (ra- 

 toon crop). This cane contained 15.24% sucrose which would mean 

 about 12 tons of sugar grown per acre; of this, 7.4 tons of commercial 

 fcugar were recovered in bags. 



The average yield of sugar for Cartavio at present is about 4.5 

 long tons per acre. With the most up-to-date factory equipment the 

 average would be raised considerably. It is encouraging to observe 

 that the out-put of sugar has been raised 2 long tons during the past 

 ten years; or, the same acreage gives 4000 long tons more sugar now 

 than it did ten years ago. 



The data from (he Control Charts gives a pretty clear record of 

 the amount and quality of cane grown per Section, and the work of 

 the factory upon it. 



