XIII, A, 3 Mirasol y Jison: Fertilizer Experiments 



141 



Table V indicates that the different fertilizers and combinations 

 used had a varying effect on the yield of cane per hectare. Plots 

 3 and 5, the first fertilized with dried blood and the second with 

 sulphate of potash alone, gave yields less than either check. The 

 rest of the fertilized plots show an increase over the average 

 yield of the controls. Plot 2 fertilized with lime alone and plot 

 12 fertilized with nitrate of soda and sulphate of ammonia are 

 above plot 1 and below plot 9, which are the two control plots. 

 All the others are above either control. These observations can 

 be best understood witii the aid of curve 1, fig. 2. 



A table is given to show the relation between the yield of 

 each plot in tons of cane and the yield calculated as 96° sugar 

 per hectare. It is very interesting to note that while the plots 





it 





































-A i ' 



1 1 i 1 1 1 



























V^ 



^N 









/ 



\ 





X. 



c 85 









_ 





} 



\ 







^ 







' 



\ 





/ 





\ 



/ 



1 :^*'~~J-~~, 

















\ 







/ 









1 





'" 









\ 



V 



1 i j 



o 



^ 



\ 





1 



1 





k 



/ 









1 



















; 1 1 



c 



i^^ 





\ 







A^ 



\ 









1 ■ 

















1 i 









\ \ 



i 





\ ! 





• i 



I 1 ' ■ 1 ! ; ! ' 





Fig. 2. Cuii'e 1, eil'ect of fertilizers on the yield of 96' sugar: cxirve 2, tonnage of cane 



per hectare. 



from 1 to 6 and 9 to 11 show noticeable differences in the yield 

 of cane per hectare, when compared as to their yield as 96' 

 sugar, they show hardly any difference at all. Plots 7 and 8 

 show a decided increase over the control both in yield of cane and 

 96° sugar per hectare. While plot 12 is below control plot 9 

 in the yield of cane per hectare, it is above it in the yield of 

 96° sugar per hectare. Plots 13 and 14 gave almost the same 

 yield of 96° sugar per hectare, and their yields are the highest 

 obtained in these experiments. They are, however, below plots 

 8 and 11 in the yield of cane per hectare. Curve 2, fig. 2, shows 

 the above observation plainly. 



