76 

 Hours cut. 



24 



48 

 72 

 96 



The loss of sucrose in cane after cutting is less here than in some 

 other countries. This is accounted for by the dry ness of the climate 

 and that the canes are more mature when cut than in countries 

 where there is greater humidity or where the winters are cool. 

 It seems to be true that the more mature the cane, the smaller will 

 be the loss of sucrose after cutting. 



SOIL INOCULATION. 



Green manuring is not generally practiced in Peru. Some of the 

 soils would undoubtedly be benefitted by it and by inoculation with 

 nitrogen-fixing bacteria. Uncultivated legumes frequently grow in 

 the cane fields; their roots, on examination, have been found to have a 

 fair supply of nodules, showing that the soils contain some nitrogen- 

 fixing bacteria. The alfalfa of the country seems to be sparingly 

 supplied as the roots so far examined have had few and small nodules. 



Experiments in soil inoculation were carried on at Cartavio, with 

 the cowpea and the alfalfa of the country. The roots of the inocula- 

 ted pea plants had larger nodules than the uninoculated. Alfalfa 

 roots from both the inoculated and uninoculated soil showed very few 

 nodules. 



The experiment with alfalfa should be repeated as there may 

 have been some error in carrying out the directions for inoculating. 



In connection with the regular laboratory work on cane, some 

 special analyses were made bringing out several observations that 

 may be of interest for further investigation. 



From fifteen partial analyses of canes grown at Cartavio, the 

 following are given to show the variation in the constituents of 

 these canes. 



a. b. c. a. b. c. 



Nitrogen in cane, .046 .048 .046. Ash in cane, .50 .65 .52 



