Manvalam

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Department of Agriculture - Farmers Welfare
Government of Tamilnadu
Tamil Mannvalam
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Tamil Mannvalam

Soil fertility is the ability of a soil to sustain plant growth by providing essential plant nutrients and favourable chemical, physical, and biological conditions as a habitat. Plant nutrients include Macro and Micronutrients.

Soil Classification of Tamil Nadu
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Major Soil groups of Tamilnadu:
Soil is one of the most important non-renewable basic resources on the earth’s surface. About 39.34 percent of Tamil Nadu is occupied by the Red soil, 37.89 percent by brown soils,16.38 percent by Black soils, 3.51 percent by Grey soils, 2.03 percent by Mixed soils and 0.86 percent by Alluvial soils.

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  • 45% Mineral Matter
  • 25% Water
  • 25% Air
  • 5% Organic Matter

Soil Composition
Soil composition is an important aspect of nutrient management. The basic components of soil are mineral matter , organic matter, soil air, and soil water. The typical soil consists of 45% mineral matter , 5% organic matter, 25% water and 25% air.

Services

District Soil Health Dashboard
Nutrient Status

Nitrogen

N

  • Status
  • Low < 113 Kg/ac
  • Medium 113 - 180 Kg/ac
  • High > 180 Kg/ac
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Phosphorus

P

  • Status
  • Low < 4.5 Kg/ac
  • Medium 4.5 - 9 Kg/ac
  • High > 9 Kg/ac
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Potassium

K

  • Status
  • Low < 48 Kg/ac
  • Medium 48 - 113 Kg/ac
  • High > 113 Kg/ac
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Organic Carbon

OC

  • Status
  • Low < 0.5 %
  • Medium 0.5 - 0.75 %
  • High > 0.75 %
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Acidic/Alkalinity

pH

  • Status
  • Acidic < 6.0
  • Neutral 6.0 - 8.5
  • Alkaline > 8.5
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Electrical Conductivity

EC

  • Referral dS/m
  • Good < 1
  • Medium 1 - 2
  • No Match > 2
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Secondary and Micronutrient Status
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Know Your Major Soil Type

Thiruvallur Ranipet Vellore Thirupathur Kancheepuram Chengalpattu Tiruvannamalai Villupuram Krishnagiri Dharmapuri Kallakuruchi Cuddalore Salem Namakkal Erode Perambalur Ariyalur Mayiladuthurai Thiruvarur Nagapattinam Nilgiris Thanjavur Pudukkottai Coimbatore Tiruppur Karur Trichy Dindigul Theni Madurai Sivagangai Virudhunagar Ramanathapuram Tenkasi Thirunelveli Thoothukudi Kanyakumari