VIII, A, 3 



Tempongko: Sugar-cane Experiments 



161 



vations of these plants were made, and the growth of stalk from 

 the base to the longest leaf, as well as the stalk circumference, 

 were carefully noted. The cane from each plot was weighed on 

 April 21, 1911, and the yield calculated. 



The data obtained in the plots where different methods of plant- 

 ing were followed are shown in Table II. 



Table II. — Results obtained with various distances between rows of cane. 



Plot No. 



Plot dimen- 

 sions. 



Distance 



between 



rows. 



Distance 



between 



ends of 



seed 



cane. 



Tops per 

 hectare. 



I 



Meters. 



40 by 15. 75 



40 by 14 



a 2, 378 



40 by 13.2 



33.3 by 30 



Meters. 

 1.75 

 1.75 

 1.20 

 1.20 

 1.20 



Meters. 

 0.75 

 1.00 

 .50 

 .00 

 .33 



7,125 



4,399 



10, 416 



27,776 



13, 778 



II 



III (V-A, VI-A) 



IV 



VII-A 





tt Square meters. 



The average growth and condition of the cane in these plots 

 are shown in Table III. 



Table III. — Average growth and condition of the cane in the experimental 



plots. 



Plot No. 



Growth 

 in length 

 per week 



from 



Aug. 30, 



1910, to 



Apr. 20, 



1911. 



Length 



from base 



to longest 



leaf on 



Apr. 20, 



1911. 



Circum- 

 ference 

 on Apr. 

 20, 1911. 



Pro- 

 duction 

 of leaves 

 per week 



from 



Sept. 10, 



1910, to 



Apr. 20, 



1911. 



Per cent 

 of har- 

 vestable 

 suckers 

 to orig- 

 inals. 



Harvest- 

 able 

 suckers 

 per hec- 

 tare, a 



Origi- 

 nals. b 



Yield of 

 stripped 

 cane per 

 hectare. 



I 



Meter. 



0. 0406 



.0391 



.0435 



.0444 

 .0416 



Meters. 

 2. 3775 

 2.2121 



2.4595 



2.5417 

 2. 3094 



Meter. 



0. 0815 



.0820 



.0848 



.0800 

 .0810 



0.939 

 .996 



.910 



.894 

 .875 



73 

 81 



70 





 55 



31, 198 

 21,379 



43, 565 





 45,467 



42,750 

 26,394 



62,496 



166, 656 

 82,668 



Kilos. 



143.3 



160.8 



f 212.1 



< 240.8 



I 287.4 



216.8 



280.4 



II 



Ill (V-A, VI-A) 

 IV 



VII-A 





* The number of suckers was calculated by subtracting 6 — the number of original buds — 

 from the total number of harvestable canes in a stool. 



b The number of originals was calculated by multiplying 6 — the number of original buds— 

 by the number of seed tops used. 



In general, the rate of growth in length was greatest in the 

 most thickly planted plots, while the reverse was true in the gain 

 measured by circumference. The per cent of harvestable suck- 

 ers was proportionally greater in the thinly planted areas, while 

 the total yields of cane varied irregularly as may be seen from 

 the table. 



