Negros Occidental
| Municipality | Soil Series | Area (Ha) |
|---|
| Bacolod City | Bago | 2,684.38 |
| Guimbalaon | 4,091.73 | |
| Obando | 64.28 | |
| Silay | 5,095.94 | |
| Tupi | 2,481.79 | |
| Hydrosol | 95.93 | |
| Mountain soil (undiffe | 510.74 | |
| Bago City | Bago | 5,854.44 |
| Guimbalaon | 10,217.56 | |
| Manapla | 7,149.58 | |
| San Manuel | 482.38 | |
| Silay | 10,560.60 | |
| Hydrosol | 191.29 | |
| Mountain soil (undiffe | 571.68 | |
| Binalbagan | Guimbalaon | 3,291.96 |
| Isabela | 804.23 | |
| La Castellana | 1,565.64 | |
| Obando | 433.34 | |
| San Manuel | 2,296.77 | |
| Silay | 1,102.55 | |
| Hydrosol | 329.92 | |
| Mountain soil (undiffe | 9,731.26 | |
| Cadiz City | Bago | 1,603.59 |
| Cadiz | 2,017.17 | |
| Faraon | 4.43 | |
| Guimbalaon | 10,768.25 | |
| Isabela | 299.91 | |
| Luisiana | 7,092.45 | |
| Manapla | 1,152.73 | |
| San Manuel | 7.44 | |
| Silay | 81.36 | |
| Victorias | 132.18 | |
| Hydrosol | 1,828.46 | |
| Mountain soil (undiffe | 26,803.44 | |
| Calatrava | Faraon | 10,932.26 |
| La Castellana | 1,138.53 | |
| Hydrosol | 729.04 | |
| Mountain soil (undiffe | 21,562.06 | |
| Candoni | Bantay | 24,180.10 |
| Faraon | 2,901.15 | |
| Tupi | 1,580.59 | |
| Mountain soil (undiffe | 3,008.14 | |
| Cauayan | Bantay | 8,987.55 |
| Faraon | 19,947.67 | |
| Isabela | 2,772.50 | |
| Umingan | 262.80 | |
| Hydrosol | 192.44 | |
| Mountain soil (undiffe | 18,611.78 | |
| Enrique B Magalona | Bago | 205.59 |
| Guimbalaon | 3,369.91 | |
| Silay | 7,000.27 | |
| Hydrosol | 1,641.97 | |
| Mountain soil (undiffe | 1,790.95 | |
| Escalante City | Bolinao | 4,958.27 |
| Faraon | 4,936.32 | |
| Guimbalaon | 3,071.34 | |
| Isabela | 166.14 | |
| La Castellana | 758.27 | |
| Luisiana | 210.03 | |
| Manapla | 2,714.06 | |
| San Manuel | 483.65 | |
| Hydrosol | 1,698.08 | |
| Himamaylan City | Guimbalaon | 1,722.97 |
| Isabela | 2,858.42 | |
| La Castellana | 2,113.12 | |
| Manapla | 10,901.42 | |
| Obando | 288.86 | |
| San Manuel | 804.22 | |
| Silay | 792.61 | |
| Hydrosol | 1,148.86 | |
| Mountain soil (undiffe | 15,814.24 | |
| Himmaylan City | Isabela | 600.64 |
| Silay | 45.73 | |
| Hinigaran | Bago | 1,924.78 |
| Guimbalaon | 4,882.62 | |
| Isabela | 2,366.61 | |
| San Manuel | 584.58 | |
| Silay | 3,579.55 | |
| Hydrosol | 1,635.49 | |
| Hinoba An | Bantay | 95.09 |
| Faraon | 43,184.65 | |
| Tupi | 6,755.84 | |
| Ilog | Bantay | 9,268.84 |
| Faraon | 2,108.53 | |
| Isabela | 4,774.66 | |
| Tupi | 8,636.52 | |
| Hydrosol | 2,429.48 | |
| Isabela | Guimbalaon | 418.87 |
| Isabela | 2,072.63 | |
| La Castellana | 132.71 | |
| San Manuel | 6,305.92 | |
| Silay | 1,059.13 | |
| Mountain soil (undiffe | 9,799.12 | |
| Kabankalan City | Bantay | 15,035.41 |
| Batuan | 5,077.17 | |
| Faraon | 3,569.70 | |
| Guimbalaon | 8,865.19 | |
| Isabela | 6,273.32 | |
| Manapla | 304.94 | |
| San Manuel | 1,749.71 | |
| Tupi | 16,709.35 | |
| Hydrosol | 374.44 | |
| Mountain soil (undiffe | 13,176.25 | |
| La Carlota City | Guimbalaon | 5,204.23 |
| La Castellana | 153.03 | |
| Manapla | 555.69 | |
| Silay | 4,956.78 | |
| Mountain soil (undiffe | 1,231.33 | |
| La Castellana | Faraon | 982.52 |
| Guimbalaon | 9,663.53 | |
| Isabela | 658.53 | |
| La Castellana | 1,523.42 | |
| Silay | 5,242.61 | |
| Mountain soil (undiffe | 1,620.39 | |
| Manapla | Bago | 477.54 |
| Cadiz | 607.58 | |
| Guimbalaon | 203.96 | |
| Luisiana | 6,614.10 | |
| Manapla | 1,287.15 | |
| Silay | 144.06 | |
| Victorias | 116.53 | |
| Hydrosol | 91.88 | |
| Mountain soil (undiffe | 458.76 | |
| Moises Padilla | Faraon | 555.45 |
| Guimbalaon | 5,883.30 | |
| Isabela | 1,797.27 | |
| La Castellana | 367.62 | |
| San Manuel | 53.13 | |
| Silay | 1,505.21 | |
| Mountain soil (undiffe | 4,828.07 | |
| Murcia | Bago | 936.88 |
| Guimbalaon | 13,058.83 | |
| San Manuel | 6.33 | |
| Silay | 646.24 | |
| Tupi | 3,083.85 | |
| Mountain soil (undiffe | 18,687.57 | |
| Pontevedra | Guimbalaon | 3,795.20 |
| Isabela | 48.18 | |
| La Castellana | 1,482.74 | |
| Manapla | 387.04 | |
| Pulupandan | 368.29 | |
| Silay | 4,384.47 | |
| Hydrosol | 980.44 | |
| Pulupandan | Obando | 262.10 |
| Silay | 835.30 | |
| Hydrosol | 459.23 | |
| Sagay City | Bolinao | 67.47 |
| Cadiz | 618.58 | |
| Faraon | 7,676.12 | |
| Guimbalaon | 4,999.29 | |
| La Castellana | 1,549.06 | |
| Luisiana | 6,956.78 | |
| Manapla | 3,518.98 | |
| San Manuel | 540.01 | |
| Hydrosol | 2,431.44 | |
| Mountain soil (undiffe | 2,832.58 | |
| Salvador Benedicto | Guimbalaon | 6,800.32 |
| Mountain soil (undiffe | 11,421.37 | |
| San Carlos City | Faraon | 7,472.74 |
| Guimbalaon | 6,644.62 | |
| Isabela | 3,294.26 | |
| La Castellana | 952.40 | |
| Hydrosol | 250.40 | |
| Mountain soil (undiffe | 343.35 | |
| San Enrique | San Manuel | 144.58 |
| Silay | 1,802.87 | |
| Hydrosol | 734.67 | |
| Silay City | Guimbalaon | 8,025.37 |
| Silay | 7,481.47 | |
| Hydrosol | 684.04 | |
| Mountain soil (undiffe | 3,650.51 | |
| Sipalay City | Faraon | 31,774.17 |
| Obando | 191.49 | |
| San Manuel | 2,483.94 | |
| Hydrosol | 445.75 | |
| Mountain soil (undiffe | 2,971.78 | |
| Talisay City | Guimbalaon | 4,424.20 |
| Obando | 0.59 | |
| Silay | 4,980.93 | |
| Tupi | 1,307.28 | |
| Mountain soil (undiffe | 9,132.84 | |
| Toboso | Bolinao | 1,436.67 |
| Faraon | 4,963.51 | |
| Guimbalaon | 2,203.77 | |
| La Castellana | 1,043.52 | |
| Luisiana | 365.31 | |
| San Manuel | 142.35 | |
| Hydrosol | 662.07 | |
| Mountain soil (undiffe | 1,956.21 | |
| Valladolid | San Manuel | 209.71 |
| Silay | 3,728.29 | |
| Hydrosol | 81.25 | |
| Victorias City | Bago | 1,313.27 |
| Guimbalaon | 2,222.85 | |
| Luisiana | 2,527.77 | |
| Silay | 1,307.12 | |
| Victorias | 166.80 | |
| Hydrosol | 356.58 | |
| Mountain soil (undiffe | 2,440.72 |
Soil Series
Properties limiting crop production
Management Recommendation
| Bago | Crops cannot grow w/o drainage; slower N mineralization; Zn deficiency in rice; K deficiency; low organic matter; lack of moisture | Sufficient irrigation supply with adequate drainage; OM incorporation; green manuring; K fertilization; application of ZnSO42- in lowland rice when deficiency occurs | OM incorporation; sufficient irrigation supply with adequate drainage; green manuring; fertilization | Can be planted to root crops assuring a good drainage system and adequate irrigation supply; adequate fertilization; OM incorporation |
| Bantay | Acidic; shallow soil limiting productivity of shallow-rooted crops; low K; moderate erosion | Liming upland rice; adequate fertilization; OM addition; terracing | Liming; adequate fertilization; OM addition or green manuring | Moderately suited to root crops; adequate fertilization |
| Batuan | P deficiency; Shallow soil limiting productivity of shallow rooted crops; moderate soil erosion hazard; acidic | Adequate and balanced NPK fertilization; terracing or construction of bunds; liming; use of high yielding varieties | Contour terracing; balanced NPK fertilization; liming and addition of organic matter; use of high yielding varieties | Production can be limited due to shallow rooting depth of the soil; contour farming/terracing |
| Bolinao | Rolling topography in some areas which causes risk of erosion; shallow rooting depth; low available P and K | Suitable for rice but needs terracing and use of limestone outcrops for re-enforcing dikes/bunds; application of phosphate fertilizers; upland rice | Contour terracing; proper fertilization; proper timing of cultivation and planting; addition of organic matter and animal manure to improve soil fertility and application of phosphate fertilizers | Contour terracing; use of cover crops like Ipil-ipil for soil rehabilitation and source of firewood at the same time; addition of organic matter |
| Cadiz | Low fertility; presence of gravels that impede tillage operations; hard compact mass of burned rock called igang that impedes internal drainage; moderate to severe flooding | NPK fertilization; organic matter application to improve soil fertility; subsoiling once every 5 or 6 years to break igang; flood control system or plant varieties that are flood-tolerant | Fertilization; organic matter application to improve soil fertility; subsoiling every 5 or 6 years to break igang; planting on high broadbeds or ridges | Fertilization; organic matter application to improve soil fertility; subsoiling every 5 or 6 years to break igang; planting on high broadbeds or ridges |
| Faraon | Plants may suffer Fe and Zn deficiency due to high pH; K deficiency; shallow effective soil depth limiting productivity of shallow rooted crops; rock outcrops are present; hilly topography; growing period is possible only during rainy season | Construction of bunds for upland or terracing; application of ZnSO42 in lowland rice if deficiency occurs | Contour farming; shallow cultivation; fertilization; adequate irrigation system; minimum tillage to lessen erosion rates | Moderately suitable to root crops due to shallow rooting depth and presence of outcrops; minimum tillage to lessen erosion rates |
| Guimbalaon | Poor nutrient retention (leaching of bases); acidic; P and K deficiency (due to fixation); presence of hardpan; low moisture; severe erosion; presence of rock outcrops that impede drainage | OM incorporation; liming; suitable for rice but needs terracing and use of outcrops for re-enforcing dikes | Contour terracing/farming; erosion prevention and water control practices; proper fertilization; OM incorporation; liming; subsoiling to break hardpan | Liming; proper fertilization and OM incorporation; contour terracing; subsoiling to break hardpan |
| Isabela | Crops cannot grow w/o drainage; slower N mineralization; Zn deficiency in rice; high P fixation; severe topsoil shrinking & swelling; hard to till; seasonal river flooding | Application of ZnSO42- in lowland rice when deficiency occurs; N and P fertilization; build drainage canals and flood control system | N and P fertilization; build drainage canals; construct broad beds, ridges or furrow; cultivate only at optimum moisture content; cover cropping | N and P fertilization; build drainage canals; cultivate only at optimum moisture content; not suitable for nuts; construct beds, ridges or furrow |
| La Castellana | N & P deficiency; acidic; severe erosion that losses the more fertile topsoil than the subsurface soil; presence of boulder outcrops that impede tillage; low moisture | N & P fertilization; liming in upland; adequate erosion control measures; adequate irrigation | N & P fertilization; liming; adequate erosion control measures; contour farming; strip cropping and cover-cropping; adequate irrigation | N & P fertilization; liming in upland rice & other diversified crops; adequate erosion control measures; adequate irrigation |
| Luisiana | Low K, Ca, Mg; very acidic; Fe or Al toxicity; low nutrient retention; run-off; hilly topography | Liming upland rice; adequate P and K fertilization; practice fallow period and return back stables in the field to enhance nutrient retention or install vegetation cover; OM incorporation; early planting | Contour farming and cover-cropping; adequate fertilization; liming; OM incorporation; vegetation cover or fallowing | Best suited to root crops; OM incorporation to improve fertility; contour cropping/terracing |
| Manapla | P & K deficiency; acidic; presence of pebbles that damage root; depletion of the top soil due to severe erosion | P & K fertilization; liming upland rice; adequate erosion control measures like terracing | P & K fertilization; liming; adequate erosion control measures (e.g. contour cropping/terracing) | P & K fertilization; liming; adequate erosion control measures (e.g. contour cropping/terracing) |
| Obando | Calcareous; P & K deficiency; shallow soil; lack of moisture for shallow rooted crops due to low water holding capacity ; frequent shallow flooding from rainfall and run-off | Suitable for rice during wet season but needs ample amount of fertilizers to address the fertility problem; phosphorus application; OM application; adequate irrigation supply | Application of organic matter to improve soil structure; practice timing of planting; deep plowing; phosphorus application; flood control measures (use broadbeds or ridges) | Suitable for root crops due to sandy texture; Use of broad beds, ridges or furrows; adequate irrigation |
| Pulupandan | Calcareous; P & K deficiency; easily drained soil; beach ridges relief | P & K fertilization; adequate irrigation supply | P & K fertilization; adequate irrigation supply | P & K fertilization; adequate irrigation supply |
| San Manuel | Excessively wet and annual flooding for short periods and excessive drought during dry season; low OM | Suited for paddy rice during wet season and with adequate irrigation during dry season; OM addition thru animal or green manuring | Construction of adequate drainage, irrigation and flood control system due to seasonal flood hazard and high seasonal water table; use broad beds and ridges; suited for diversified crops such as corn, vegetables and watermelon during dry season wit | Establishment of adequate drainage and irrigation system; regular addition of organic matter and animal manure to improve soil fertility |
| Silay | Low fertility & acidic; percolation is impeded due to presence of bakias beneath the surface low fertility & acidic; percolation is impeded due to presence of bakias beneath the surface | N & K fertilization; organic matter incorporation e.g. plowing under of crop residues & green manuring; crop rotation with legumes; liming in upland; deep plowing; build adequate irrigation and provision of drainage canals | N & K fertilization; organic matter incorporation e.g. plowing under of crop residues & green manuring; liming; deep plowing; build adequate irrigation and provision of drainage canals | Adequate fertilization; OM incorporation; liming; adequate irrigation and provision of drainage canals |
| Tupi | Low fertility; acidic; K deficiency; severe erosion removing the more fertile topsoil | Liming upland; adequate erosion control measures; adequate fertilization | Liming; implement erosion control measures e.g. contour/terracing; OM addition and adequate and timing fertilization; cover cropping/green manuring | Implement erosion control measures e.g. contour/terracing; adequate fertilization |
| Umingan | Relatively low fertility; presence of gravels and stones in the subsoil that damage roots; excessive downward movement of water, hence tend to be droughty; seasonal flooding especially after heavy rains | Application of fertilizer; clearing of large gravels and rock; adequate irrigation supply | Construction of adequate irrigation and flood control system; application of fertilizer and organic matter; suited for diversified crops; use of broadbeds and ridges | Gravelly subsoil may cause lower yield of root crops; adequate irrigation and flood control system; se of broadbeds and ridges |
| Victorias | P & K deficiency; low fertility; acidic; hard impeded drainage; severe erosion | Adequate P & K fertilization; OM application; liming; provision of drainage canals and sufficient irrigation supply | Liming, plant acid-tolerant crops; adequate fertilization; contour farming or cover cropping | Liming; adequate fertilization; terracing/contour cropping; provision of drainage canals |