SUOAB-CANE 621 



LABORATORY EXERCISES 



(1) Count and record the number of true roots from a node 

 just under the surface of the ground ; also the number of dots on 

 a node about a foot above the ground. Do roots develop from 

 most of the dots ? 



(2) Measure and record in order the length of each internode 

 from the surface of the ground to the uppermost part of the stem. 



(3) Cut a cross section through a stalk of sugar-cane and make 

 a drawing showing the relative number of bundles near the center 

 and near the rind. 



(4) Dip the cut end of a cane bearing green leaves into diluted 

 red ink, and a few hours later split the next few joints above, 

 and trace the red liquid rising in the water vessels. Make a 

 drawing of one such longitudinal section. 



(5) When a cane mill is next seen at work, note the dropping 

 of the liquid from one end of the cane as soon as the roller presses 

 the other end. 



(6) If cane that has been kept over winter or subjected to 

 cold weather can be found, cut lengthwise through a live bud 

 and through a dead bud, and make a drawing or description of 

 the appearance of each. 



(7) Wash away the soil from around a cluster of canes and 

 attempt to determine which is the oldest and which the youngest 

 cane in the cluster. 



LiTEEATUBE 



General. , 



Stubbs, W. C. Sugar-cane. Vol. I. La. State Dept. Agr., 



Baton Rouge, Louisiana. 

 Stubbs, W. C, Blotjin, R. E., and Dodson, W. R. La. Expr. 



Sta., Buls. Nos. 59, 66, 70, 78, 100. 

 Earle, F. S. Southern Agriculture. (The Mucmillan Co.), 



New York, pp. 117-141. 

 Eahle, F. S. Cuba Expr. Sta., Bui. No. 2 (EngHsh Edition). 

 Cobb, N. A. Sugar-cane. Bailey's Cyclo. Agr., Vol. II, pp. 



599-611. 



