XIII, A, 3 Mirasol y Jison: Fertilizer Experiments 143 



form of nitrogen lowered the purity of the juice to a large 

 extent. 



2. The effect of fertilizers on the percentage of sucrose in 

 the cane runs parallel with that on the purity of the juice, 

 although it is more pronounced in the latter than in the 

 former. 



3. Sulphate of ammonia in combination with sulphate of 

 potash or with double superphosphate produced the greatest 

 yield of cane. Dried blood and sulphate of potash apparently 

 lowered the yield of cane. 



4. Increased yield in tons of cane per hectare does not neces- 

 sarily mean increased production of 96° sugar. 



5. The complete fertilizer with nitrogen in the form of nitrate 

 of soda would give the highest return in pesos and centavos if 

 used on this soil. 



6. It is not claimed that the results of these experiments will 

 be directly applicable even at separated points near the college, 

 and it is doubtful whether the same results would be obtained 

 if the fertilizers used were tried on a different field in the college 

 itself. However, it is concluded that the complete fertilizer with 

 nitrogen in the form of nitrate of soda would in all probability 

 give good results on an ordinary soil. 



