! ! ! ! \ ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ^ ! ! ! ! ! ! ! ! ^ Luna Gamu Jones Roxas Ramon Aurora Mallig Alicia Quezon Cordon ILAGAN Burgos CAUAYAN Echague Cabagan Quirino Palanan Tumauini Cabatuan SANTIAGO San Mateo Divilacan Dinapigue Angadanan San Pablo Naguilian Maconacon San Manuel San Isidro San Mariano Santa Maria San Agustin Santo Tomas Delfin Albano San Guillermo Benito Soliven Reina Mercedes 122°30' 122°30' 122°0' 122°0' 121°30' 121°30' 17°30' 17°30' 17°0' 17°0' 16°30' 16°30' R E P U B L I C O F T H E P H I L I P P I N E S DEPARTMENT OF AGRICULTURE DEPARTMENT OF AGRICULTURE BUREAU OF SOILS AND Elliptical Road Cor.Visayas Ave.,Diliman,Quezon City WATER MANAGEMENT PHILIPPINE SEA Kabikawan Cove Palanan Bay Divilacan Cove Didadongan Bay Digollorin Bay Province of Cagayan Province of Ifugao Province of Nueva Vizcaya Province of Quirino Province of Aurora Area estimated based on field survey, other information from DA-RFO's, MA's, NAMRIA Land Cover (2010), and BSWM Land Use System Map pH Value GENERAL (1:1 Ratio) RATING ha % Moderately Acid to Slightly Acid 56,467 100.00 Nearly Neutral to Extremely Alkaline, Extremely Acid 5.6 - 6.8 7,711 8,146 20,519 35.58 13.65 14.43 36.34 High DESCRIPTION Very Strongly Acid Low 6.9 and above; 4.5 and below 20,091 AREA TOTAL 5.1 - 5.5 Moderately High Strongly Acid 4.6 - 5.0 Moderately Low MAPPING UNIT LEGEND CONVENTIONAL SIGNS BOUNDARY Municipal City Provincial Regional HYDROLOGY Shoreline Rivers / Lake P \ Capital City / City Capital Town / Town ! PLACES ^ ROADS Expressway Primary Secondary Tertiary Residential Trunk line MISCELLANEOUS INFORMATION SOURCES OF INFORMATION : Topographic information taken from NAMRIA Topographic Map at a scale of 1:50,000. Elevation data taken from SRTM 1 arc-second global dataset (2015). Bathymetry information taken from Britis Oceanographic Centre. Soil pH data gathered through the Soil Health Assessment - National Soil Sampling and Testing Project Phase III led by the Bureau of Soils and Water Management in partnership with the DA - Regional Field Offices (RFOs) and Local Government Units (LGUs). Copyright © 2018. All rights reserved to the Bureau of Soils and Water Management. No part of this publication may be reproduced, stored in a retrieval system or published without written consent from the BSWM. Users noting errors or omissions in this publication are requested to inform the BSWM, SRDC Bldg., Elliptical Rd., cor. Visayas Avenue, Diliman, Quezon City, Philippines or visit the BSWM website (http://www.bswm.da.gov.ph). Prepared and produced by the GEOMATICS AND SOIL INFORMATION TECHNOLOGY DIVISION, BSWM. LOCATION MAP 122°0' 17°0' 16°0' LUZON VISAYAS MINDANAO 125°0' 120°0' 15°0' 10°0' 5°0' ISABELA Apayao Kalinga Mt. Province Ifugao Quirino Nueva Vizcaya Cagayan Aurora PROVINCE OF ISABELA ° ( Key Corn Areas ) DISCLAIMER : All political boundaries are not authoritative Projection : Datum : Transverse Mercator PRS 1992 0 2 4 6 8 10 1 Kilometers SCALE 1:165,000 SOIL pH MAP Province of Kalinga Mountain Province