IX, A, 1 



Cox and Argiielles: Soils of Luzon 



45 



o 

 S 



CO 



CO 

 CO 



<& 

 -S 



O 



a 



00 



< 

 Eh 



CO 



.is 



;.< 



e 



Sugar-cane field. Below a depth of 25 cen- 

 timeters this is underlain by a yellow clay 

 subsoil. At about 1 meter from the sur- 

 face a fine yellow sand substratum is 

 encountered. 



Subsoil to No. 1. 



From near-by foothills. Underlain by yel- 

 lowish clay at about 25 centimeters. It 

 is a loam of residual origin adjacent to 

 which are alluvial deposits consisting 

 principally of coarse sand. 



Subsoil to No. 3. 



From sugar land representing a type of 

 soil generally found in the valley of that 

 section of Pampanga. Sandy for a depth 

 of at least several meters. 



Subsoil to No. 5. 



Hacienda Bernia, cultivated in sugar cane. 



1 kilometer from Casa-Hacienda on Gutat 

 road. Cultivated in sugar cane. 



0.5 kilometer from Casa-Hacienda. Sugar 

 land. 



From Hacienda- Velez. Cultivated in su- 

 gar cane. 



0) 



g 

 3 

 o 

 W 



San Fernando, 

 Pampanga. 



do __ 



Camp Stotaenberg, 

 Pampanga. 



do 



Near Magalang, 

 Pampanga. 



do 



Florida Blanea, 



Pampanga. 

 Dinalupihan, Ba- 



taan. 

 do 



Between Gutat and 

 Dinalupihan, Ba- 

 taan. 



.Bt. 



P.ct. 



100 



100 

 100 



100 

 92.7 



90.6 

 100 



100 



100 



100 



Soil 



acidity 



(per 



cent 



CaCOs). 



P.ct. 



0. 0062 

 0. 0054 

 0. 0109 

 0. 0070 



We 



P.ct. 



0.71 

 0.94 

 1.08 

 0.66 





P.ct. 



0.21 

 0.31 

 0.26 

 0.34 



Pot- 

 ash 

 (K2O). 



P.ct. 

 0.443 



0.194 

 0.063 



0.060 

 0.095 



0.112 

 0.144 



0.153 



0.124 



0.146 



Mag- 

 nesia 

 (MgO). 



P.ct. 



0.13 

 0.22 

 0.17 

 0.15 





P.ct. 

 1.02 



1.13 

 0.10 



0.23 

 0.55 



0.50 

 0.62 



1.08 



0.91 



0.81 



Phos- 

 phoric 

 anhy- 

 dride 

 (P2O6). 



P.ct. 



0.467 



0.362 

 0.113 



0.134 

 0.127 



0.126 

 0.098 



0.156 



0.143 



0.124 



Nitro- 

 gen 

 (N2). 



P.ct. 



0.106 



0.075 

 0.111 



0.077 

 0.073 



0.054 

 0.087 



0.131 



0.136 



0.090 



Loss 

 on ig- 

 nition. 



P.ct. 

 6.39 



6.60 

 6.25 



6.33 

 3.96 



1.77 

 4.74 



6.24 



6.17 



4.40 



Mois- 

 ture 

 (H2O). 



P.ct. 

 4.91 



6.59 

 3.20 



4.14 

 1.25 



0.73 

 3.34 



5.21 



5.84 



3.49 



Speci- 

 men of 

 soil. 



Cm. 

 (h 25 



25- 50 

 0- 25 



25- 50 

 0- 30 



30-150 

 0- 30 



0- 30 



0- 30 



0- 30 



1 



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