Download (4MB) - QUT Digital Collections

CANE SUGAR." In order to have fresh information on this point analyses have been madeof fresh cane leaves, and of dry cane leaves, just as they were about to fall from theplant hut not actually fallen." The results are as follows, and show in a striking manner the nature of thetransference of plant food material from the leaf back to the stem as it ripensand as its lower portion becomes dormant:—ANALYSIS OF ASH.Green TrashLeaves. Leaves.Silica 46-26 .. 63-31Carton 3-52 .. 3-47Iron, oxide -49 .. -38Alumina — .. -03Lime 4-68 .. 6-67Magnesia 5-08 .. 5-10Potash 17-23 .. 6-49Soda 6-60 .. 3-58Phosphoric anhydride 1-39 .. -93Sulphuric anhydride 5-45 .. 5-18Carbon dioxide 2-39 .. 1-97Chlorine 9-09 .. 1-83Water 1-25 .. 2-59103-43 .. 101-53Deduct oxygen equal to Chlorine 2-02 .. -40Nitrogen101-41 .. 101-13-777 on dried -36 on driecLleaves. trash.(TEAMS OF MINERAL MATTEK IN ONE LEAF.One fresh cane leal contains -9688 grams of ash.One fresh trash leaf contains -5304 grams of ash.Green Leaf. Trash Leaf.Grams. Grams.Silica -4419 .. -3321Carbon -0336 .. -o182Iron oxide .0047 .. .0020Alumina .. -0002Lime .0448 .. -0350Potash -1645 .. -0340Soda -0630 .. -0188Phosphoric anhydride -0134 .. -0048Sulphuric anhydride -0520 .. -0272Carbon dioxide .. -0228 .. -0103Chlorine -0868 .. -0096Water -0118 .. -0136Deduct oxygen equal to chlorine -0193 .. -0021•9586 .. -5304Nitrogen -094 .. -033" If this manner of regarding the cane as a growing organism is correct, it may lead.us to modify some of our ideas concerning the manuring of sugar canes, and may accountfor the better result obtained by applying considerable quantities of nitrogen in one dose.at an. early stage, and for the smaller results obtained from the use of such a slow actingsmanureas dried blood."