84 CANAVALIA ENSIFORMIS (jACK BEAN) 



there from 38 to 47J tons of green forage to the 

 hectare. The best crop of seeds was 1,420 kilos to the 

 hectare. 



M. Krauss says that akhough they are only usually 

 concerned with a single crop, a second crop has been 

 attempted at this station, and but for the unfortunate attack 

 of a rust common in peas was otherwise successful. 



At Mauritius a number of landowners have extended 

 this crop and several use the seeds as fodder for live stock. 

 Such seeds are broken up, boiled, and then given to oxen, 

 which do well on them. 



At Dowsett and Pond's Dairy, Hawaii, they are used 

 for milch-cows with excellent results, one part of green seed 

 of canavalia with an equal proportion of sorghum. 



In this country a great deal is made of Canavalia ensi- 

 formis. It resists drought well and may be grown between 

 coffee, sisal, or rubber, &c. 



M. Krauss states that nodules are always present on the 

 roots in considerable numbers, but this is a point which 

 has never been remarked in Mauritius, where, as a matter 

 of fact, the nodules are rather sparse. We can assign no 

 reason for their being so, but the plant thrives strongly 

 and forms one of the best rotation crops we have. 



M. Krauss gives the composition of the leaves of the 

 Jack Bean. Beasts have no relish for this fodder, a fact 

 which we have confirmed by a number of trials with milch- 

 cows. 



Water ... ... ... ... ... 76-81 percent. 



Ash ... ... ... ... ... 270 ,, 



Cellulose ... ... ... ... ... 6-36 ,, 



Fat ... ... ... ... ... 0-48 ,, 



Non-nitrogenous matter ... .. ... 8*44 ,, 



Nitrogenous matter ... ... ... ... 5-21 ,, 



lOO'OO ,, 



These leaves contain the following fertilizing elements : — 



Potash ... ... ... ... ... 0-65 percent. 



Lime ... ... ... ... ... 078 ,, 



Phosphoric acid ... ... ... ... 016 ,, 



