VIII, A, 3 



Tempongko: Sugar-cane Experiments 



163 



In every case the fertilized plots showed a higher rate of 

 growth in length and a marked tendency toward heavier stalks 

 with more abundant leaf production. The per cent of harvest- 

 able suckers was also increased by fertilization. All of these 

 factors combined to increase the yield of stripped cane. Plot 

 VI-B that received the most fertilizer thus showed a yield of 

 cane 79 per cent greater than the corresponding check plot 

 VI-A. The gain in all cases was proportionate to the amount 

 of fertilizer used. 



The rate of growth shown by sugar cane in the Philippines is 

 rapid during ten months following planting, reaching a maxi- 

 mum during the third and fourth months. The weekly rates of 

 growth of the various plots are shown in Table VII. 



Table VII. — Average weekly growth in length of cane in experimental plots. 



From 





To- 





Plot I. 



Plot 

 II. 



Plot 

 III. 



Plot 

 IV. 



Plot 

 V-A. 



Plot 

 V-B. 



Plot 

 VI-A. 



Plot 

 VI-B. 



Plot 

 VII-A. 



Plot 

 VII-B. 











Meter. 



Meter. 



Meter. 



Meter. 



Meter. 



Meter. 



Meter. 



Meter. 



Meter. 



Meter. 



Aug. 



30 



Sept. 



6 



0. 1123 



0. 1075 



0. 1151 



0. 0883 



0.0764 



0. 1108 



0. 1024 



0.1225 



0. 0690 



0.1004 



Sept. 



6 



Sept. 



13 



.1551 



.1251 



.1351 



.0950 



.1633 



.1283 



.1051 



.1938 



.1263 



.1780 



Sept. 



13 



Sept. 



20 



.1061 



.1231 



.1153 



.1365 



.1348 



.1307 



.1370 



.1468 



.1106 



.0991 



Sept. 



20 



Sept. 



27 



.0783 



.0693 



.0862 



.0690 



.1266 



.0859 



.0901 



.1386 



.1190 



.1287 



Sept. 



27 



Oct. 



4 



.0478 



.0434 



.0926 



.0820 



.0950 



.0831 



.1064 



.1185 



.0874 



.0892 



Oct. 



4 



Oct. 



11 



.1296 



.0735 



.1124 



.0889 



.1017 



.1440 



.1400 



.1349 



.1151 



.1039 



Oct. 



11 



Oct. 



18 



.0676 



.0651 



.0658 



.0780 



.1111 



.1411 



.0682 



.1260 



.1403 



.1029 



Oct. 



18 



Oct. 



25 



.0311 



.0382 



.0479 



.0566 



.0561 



.0940 



.0441 



.0788 



.0509 



.0914 



Oct. 



25 



Nov. 



1 



.0335 



.0410 



.0489 



.0587 



.0595 



.0960 



.0422 



.0736 



.0680 



.0929 



Nov. 



1 



Nov. 



8 



.0413 



.0453 



.0564 



.0668 



.1050 



.1050 



.0544 



.0824 



.0673 



.1093 



Nov. 



8 



Nov. 



15 



.0451 



.0488 



.0428 



.0478 



.0743 



.0852 



.0441 



.0693 



.0441 



.0762 



Nov. 



IS 



Nov. 



22 



.0529 



.0577 



.0407 



.0394 



.0732 



.0733 



.0414 



.0578 



.0383 



.0721 



Nov. 



22 



Nov. 



29 



.0544 



.0562 



.0395 



.0417 



.0703 



.0633 



.0378 



.0497 



.0332 



.0627 



Nov. 



29 



Dec. 



6 



.0632 



.0587 



.0409 



.0500 



.0704 



.0690 



.0352 



.0520 



.0313 



.0613 



Dec. 



6 



Dec. 



13 



.0332 



.0364 



.0310 



.0440 



.0587 



.0577 



.0277 



.0427 



.0330 



.0565 



Dec. 



13 



Dec. 



20 



.0267 



.0324 



.0297 



.0405 



.0557 



.0613 



.0248 



.0412 



.0315 



.0608 



Dec. 



20 



Dec. 



27 



.0297 



.0280 



.0273 



.0434 



.0518 



.0608 



.0232 



.0381 



.0280 



.0569 



Dec. 



27 



Jan. 



3 



.0258 



.0325 



.0299 



.0418 



.0522 



.0539 



.0256 



.0371 



.0254 



.0581 



Jan. 



3 



Jan. 



10 



.0244 



.0312 



.0287 



.0462 



.0506 



.0443 



.0223 



.0371 



.0285 



.0482 



Jan. 



10 



Jan. 



17 



.0201 



.0290 



.0352 



.0352 



.0094 



.0378 



.0098 



.0373 



.0161 



.0430 



Jan. 



17 



Jan. 



24 



.0197 



.0254 



.0294 



.0348 



.0092 



.0302 



.0082 



.0358 



.0142 



.0372 



Jan. 



24 



Jan. 



31 



.0171 



.0215 



.0276 



.0320 



.0063 



.0262 



.0086 



.0297 



.0108 



.0359 



Jan. 



31 



Feb. 



7 



.0106 



.0179 



.0248 



.0469 



.0033 



.0230 



.0024 



.0233 



.0107 



.0347 



Feb. 



7 



Feb. 



14 



.0168 



.0213 



.0235 



.0248 



.0141 



.0173 



.0205 



.0298 



.0166 



.0303 



Feb. 



14 



Feb. 



21 



.0191 



.0178 



.0209 



.0219 



.0138 



.0133 



.0150 



.0254 



.0153 



.0282 



Feb. 



27 



Feb. 



28 



.0175 



.0165 



.0169 



.0183 



.0094 



.0121 



.0128 



.0214 



.0109 



.0224 



Feb. 



28 



Mar. 



7 



.0163 



.0131 



.0155 



.0170 



.0093 



.0116 



.0099 



.0193 



.0105 



.0158 



Mar. 



7 



Mar. 



14 



.0137 



.0086 



.0106 



.0222 



.0112 



.0085 



.0075 



.0182 



.0128 



.0173 



Weekly s 



iverage 



to 























Apr 



. 20 









.0082 



.0038 



.0056 



.0068 



.0031 



.0034 



.0030 



.0066 



.0040 



.0116 



The fertilizer should evidently be applied before the period of 

 maximum growth to be most effective. 



